Merge branch 'main' into gcp-global-endpoint

commit: 28b802b159724c3bb59d063ed41aa324f8b987d9
author: Patric Eckhart · 3mo ago · 2026-07-12 14:19 UTC
committer: GitHub · 3mo ago · 2026-07-12 14:19 UTC
merge of: e7dc295 + cc6b04d · diff against the first parent
signature: GPG UnverifiedB5690EEEBB952194 The key is unknown

4 files · +827 -3

M README.md +13 -0


@@ -26,6 +26,7 @@ Yet another coding agent harness, lightweight and written (vibe-slopped) in go.
26	26		- user and extension themes via JSON; see [docs/themes.md](docs/themes.md).
27	27		- standing instructions via `AGENTS.md` files (global and per-project); see [Persistent instructions](#persistent-instructions-agentsmd).
28	28		- reusable instructions via `SKILL.md` files; see [docs/skills.md](docs/skills.md).
	29	+	- portable agents from local directories, `.zot` files, or temporary public GitHub downloads; see [docs/zotfiles.md](docs/zotfiles.md).
29	30
30	31		## Install
31	32

@@ -211,6 +212,18 @@ When the sandbox is on (see `/jail`), all four tools refuse paths outside the se
211	212		- JSON: `zot --json "prompt"` emits one JSON object per agent event to stdout, newline-delimited. The schema is documented in [docs/rpc.md](docs/rpc.md).
212	213		- RPC: `zot rpc` runs as a long-lived child process; commands in on stdin, events and responses out on stdout, both as NDJSON. Designed for embedding zot in third-party apps written in any language. See [docs/rpc.md](docs/rpc.md) for the wire schema and `examples/rpc/{python,node,shell,go}` for working clients.
213	214
	215	+	## zotfile agents
	216	+
	217	+	A zotfile packages an agent's instructions, skills, requirements, and enforced tool permissions as a shareable agent. Run one from a local directory, a packed `.zot` artifact, or directly from a public GitHub repository:
	218	+
	219	+	```bash
	220	+	zot run ./my-agent
	221	+	zot run ./my-agent.zot
	222	+	zot run https://github.com/patriceckhart/agents/zot-maintenance --cwd /path/to/zot
	223	+	```
	224	+
	225	+	For a GitHub URL, zot downloads the repository archive into a temporary directory, validates and runs the selected agent, then removes the downloaded source when the command exits. Agent data, consent receipts, and sessions still persist under `$ZOT_HOME`. See [docs/zotfiles.md](docs/zotfiles.md) for authoring, permissions, packaging, and current limitations.
	226	+
214	227		## Embedding
215	228
216	229		Two ways to drive zot from another program:


@@ -26,6 +26,7 @@ Yet another coding agent harness, lightweight and written (vibe-slopped) in go.
26	- user and extension themes via JSON; see [docs/themes.md](docs/themes.md).	26		- user and extension themes via JSON; see [docs/themes.md](docs/themes.md).
27	- standing instructions via `AGENTS.md` files (global and per-project); see [Persistent instructions](#persistent-instructions-agentsmd).	27		- standing instructions via `AGENTS.md` files (global and per-project); see [Persistent instructions](#persistent-instructions-agentsmd).
28	- reusable instructions via `SKILL.md` files; see [docs/skills.md](docs/skills.md).	28		- reusable instructions via `SKILL.md` files; see [docs/skills.md](docs/skills.md).
		29	+	- portable agents from local directories, `.zot` files, or temporary public GitHub downloads; see [docs/zotfiles.md](docs/zotfiles.md).
29		30
30	## Install	31		## Install
31		32

@@ -211,6 +212,18 @@ When the sandbox is on (see `/jail`), all four tools refuse paths outside the se
211	- JSON: `zot --json "prompt"` emits one JSON object per agent event to stdout, newline-delimited. The schema is documented in [docs/rpc.md](docs/rpc.md).	212		- JSON: `zot --json "prompt"` emits one JSON object per agent event to stdout, newline-delimited. The schema is documented in [docs/rpc.md](docs/rpc.md).
212	- RPC: `zot rpc` runs as a long-lived child process; commands in on stdin, events and responses out on stdout, both as NDJSON. Designed for embedding zot in third-party apps written in any language. See [docs/rpc.md](docs/rpc.md) for the wire schema and `examples/rpc/{python,node,shell,go}` for working clients.	213		- RPC: `zot rpc` runs as a long-lived child process; commands in on stdin, events and responses out on stdout, both as NDJSON. Designed for embedding zot in third-party apps written in any language. See [docs/rpc.md](docs/rpc.md) for the wire schema and `examples/rpc/{python,node,shell,go}` for working clients.
213		214
		215	+	## zotfile agents
		216	+
		217	+	A zotfile packages an agent's instructions, skills, requirements, and enforced tool permissions as a shareable agent. Run one from a local directory, a packed `.zot` artifact, or directly from a public GitHub repository:
		218	+
		219	+	```bash
		220	+	zot run ./my-agent
		221	+	zot run ./my-agent.zot
		222	+	zot run https://github.com/patriceckhart/agents/zot-maintenance --cwd /path/to/zot
		223	+	```
		224	+
		225	+	For a GitHub URL, zot downloads the repository archive into a temporary directory, validates and runs the selected agent, then removes the downloaded source when the command exits. Agent data, consent receipts, and sessions still persist under `$ZOT_HOME`. See [docs/zotfiles.md](docs/zotfiles.md) for authoring, permissions, packaging, and current limitations.
		226	+
214	## Embedding	227		## Embedding
215		228
216	Two ways to drive zot from another program:	229		Two ways to drive zot from another program:

A docs/zotfiles.md +607 -0

@@ -0,0 +1,607 @@
	1	+	# Zotfile agents
	2	+
	3	+	A Zotfile packages an agent's behavior into one portable `.zot` file. It can contain the agent's instructions, reusable skills, static assets, and metadata describing the runtime, model, operating-system, binary, and tool permissions it needs.
	4	+
	5	+	The current implementation supports creating, inspecting, verifying, and running local directories and `.zot` archives. It can also run an agent directory directly from a public GitHub repository without keeping a clone. Registry distribution, installation, signatures, bundled executable extensions, network permissions, and environment permissions are not implemented yet.
	6	+
	7	+	## Quick start
	8	+
	9	+	Create a directory for the agent:
	10	+
	11	+	```text
	12	+	reviewer/
	13	+	├── manifest.json
	14	+	├── AGENT.md
	15	+	└── skills/
	16	+	└── code-review/SKILL.md
	17	+	```
	18	+
	19	+	Add a minimal `manifest.json`:
	20	+
	21	+	```json
	22	+	{
	23	+	"zotfile": 1,
	24	+	"name": "code-reviewer",
	25	+	"version": "0.1.0",
	26	+	"description": "Reviews a repository and reports actionable findings.",
	27	+	"runtime": {
	28	+	"min_zot": "0.2.76"
	29	+	},
	30	+	"model": {
	31	+	"requires": ["tools"],
	32	+	"min_context": 64000
	33	+	},
	34	+	"permissions": {
	35	+	"fs": {
	36	+	"read": ["${workspace}"],
	37	+	"write": []
	38	+	},
	39	+	"bash": {
	40	+	"mode": "none"
	41	+	}
	42	+	},
	43	+	"requirements": {
	44	+	"os": ["darwin", "linux", "windows"]
	45	+	},
	46	+	"entry": {
	47	+	"greeting": "What should I review?",
	48	+	"default_prompt": null
	49	+	}
	50	+	}
	51	+	```
	52	+
	53	+	Add the agent's standing instructions to `AGENT.md`:
	54	+
	55	+	```markdown
	56	+	# Code reviewer
	57	+
	58	+	Review the current repository without modifying it.
	59	+
	60	+	Prioritize correctness, security, regressions, and missing tests. Report findings
	61	+	in severity order with file and line references. Do not praise the code or
	62	+	summarize files that have no findings.
	63	+	```
	64	+
	65	+	Test the directory directly during development:
	66	+
	67	+	```bash
	68	+	zot inspect ./reviewer
	69	+	zot run ./reviewer
	70	+	zot run ./reviewer "Review the authentication package"
	71	+	```
	72	+
	73	+	Package it when ready:
	74	+
	75	+	```bash
	76	+	zot pack ./reviewer
	77	+	# wrote code-reviewer.zot
	78	+	# digest sha256:...
	79	+
	80	+	zot verify ./code-reviewer.zot
	81	+	zot run ./code-reviewer.zot
	82	+	```
	83	+
	84	+	The first run displays the declared permissions and asks for consent before the agent starts.
	85	+
	86	+	## Directory layout
	87	+
	88	+	```text
	89	+	my-agent/
	90	+	├── manifest.json # identity, requirements, and permissions, required
	91	+	├── AGENT.md # persona and standing instructions, required
	92	+	├── skills/ # SKILL.md directories, optional
	93	+	│ └── my-skill/SKILL.md
	94	+	├── assets/ # static files, optional
	95	+	└── README.md # human-facing documentation, optional
	96	+	```
	97	+
	98	+	Only `manifest.json` and a regular `AGENT.md` file are required. Other ordinary files and directories are included in the archive, but the runtime gives no special behavior to `assets/` or `README.md` yet. Files in `assets/` are not automatically added to the model context or granted filesystem access.
	99	+
	100	+	Do not include executable extensions in `extensions/`. The local runtime rejects any bundled extension directory containing `extension.json` because extension subprocesses cannot yet be confined to the manifest permissions. This is a deliberate fail-closed restriction.
	101	+
	102	+	Symlinks are not supported and cause `zot pack` to fail.
	103	+
	104	+	## `AGENT.md`
	105	+
	106	+	By default, `AGENT.md` is appended to zot's system prompt. It should describe the agent's role, workflow, constraints, output format, and when to load bundled skills.
	107	+
	108	+	Keep capability and security declarations out of this file. Permissions come only from `manifest.json` and are enforced independently of agent-authored prose.
	109	+
	110	+	Set `replace_system_prompt` to `true` in the manifest to use `AGENT.md` as the replacement system prompt:
	111	+
	112	+	```json
	113	+	{
	114	+	"replace_system_prompt": true
	115	+	}
	116	+	```
	117	+
	118	+	Replacement is intended for fully specialized agents. The default layering behavior is usually preferable because it retains zot's normal identity and tool-use guidance.
	119	+
	120	+	## Bundled skills
	121	+
	122	+	Place skills under `skills/<name>/SKILL.md` using the normal zot skill format:
	123	+
	124	+	```text
	125	+	skills/
	126	+	└── investigate-failure/
	127	+	└── SKILL.md
	128	+	```
	129	+
	130	+	```markdown
	131	+	---
	132	+	name: investigate-failure
	133	+	description: Diagnose a failing command from its output and relevant source files.
	134	+	---
	135	+
	136	+	# Investigate failure
	137	+
	138	+	1. Reproduce the failure if permissions allow it.
	139	+	2. Identify the first meaningful error rather than downstream noise.
	140	+	3. Read the implementation and nearest tests.
	141	+	4. Propose the smallest correction and validation plan.
	142	+	```
	143	+
	144	+	Bundled skills are added to normal skill discovery while the Zotfile is running. The model sees their name and description in the skill manifest and can load the full body through the `skill` tool. See [skills.md](skills.md) for the complete skill format.
	145	+
	146	+	## Manifest reference
	147	+
	148	+	The current manifest shape is:
	149	+
	150	+	```json
	151	+	{
	152	+	"zotfile": 1,
	153	+	"name": "code-reviewer",
	154	+	"version": "0.1.0",
	155	+	"description": "Reviews a repository and reports actionable findings.",
	156	+	"license": "MIT",
	157	+	"runtime": {
	158	+	"min_zot": "0.2.76"
	159	+	},
	160	+	"model": {
	161	+	"requires": ["tools", "reasoning"],
	162	+	"min_context": 64000,
	163	+	"preferred": ["claude-opus-4-5", "gpt-5.5"],
	164	+	"min_tier": ""
	165	+	},
	166	+	"permissions": {
	167	+	"fs": {
	168	+	"read": ["${workspace}", "${agent_data}"],
	169	+	"write": ["${agent_data}"]
	170	+	},
	171	+	"bash": {
	172	+	"mode": "allowlist",
	173	+	"allow": ["git", "go"]
	174	+	},
	175	+	"net": {
	176	+	"allow": []
	177	+	},
	178	+	"env": {
	179	+	"read": []
	180	+	}
	181	+	},
	182	+	"requirements": {
	183	+	"bin": ["git", "go"],
	184	+	"os": ["darwin", "linux"]
	185	+	},
	186	+	"entry": {
	187	+	"greeting": "What should I review?",
	188	+	"default_prompt": null
	189	+	},
	190	+	"replace_system_prompt": false
	191	+	}
	192	+	```
	193	+
	194	+	### Top-level fields
	195	+
	196	+	\| Field \| Required \| Current behavior \|
	197	+	\|---\|---:\|---\|
	198	+	\| `zotfile` \| yes \| Format version. Must be `1`. \|
	199	+	\| `name` \| yes \| Local agent identity and session/data namespace. See naming rules below. \|
	200	+	\| `version` \| no \| Displayed in consent and inspection output. Semver is recommended but not currently validated. \|
	201	+	\| `description` \| no \| Displayed by `zot inspect`. \|
	202	+	\| `license` \| no \| Package metadata. Not otherwise interpreted by the local runtime. \|
	203	+	\| `runtime.min_zot` \| no \| Minimum zot version. Older binaries refuse to run the agent. Unversioned development builds cannot satisfy a non-empty minimum. \|
	204	+	\| `model` \| no \| Model capabilities, minimum context, and preferences. \|
	205	+	\| `permissions` \| no \| Filesystem and bash permission ceiling. Omitted scopes deny access. \|
	206	+	\| `requirements` \| no \| Required operating systems and executables. \|
	207	+	\| `entry` \| no \| Initial presentation and prompt metadata. \|
	208	+	\| `replace_system_prompt` \| no \| Replaces rather than appends to the normal system prompt when `true`. Defaults to `false`. \|
	209	+
	210	+	### Name rules
	211	+
	212	+	The local runtime currently accepts a flat lowercase name containing only:
	213	+
	214	+	- `a` to `z`
	215	+	- `0` to `9`
	216	+	- `.`, `-`, and `_`
	217	+
	218	+	Examples:
	219	+
	220	+	```text
	221	+	code-reviewer
	222	+	repo_onboarder
	223	+	acme.audit
	224	+	```
	225	+
	226	+	Names containing `/`, uppercase letters, spaces, or path-like values such as `..` are rejected. Registry-style `namespace/agent` names are reserved for the future distribution runtime and are not accepted locally yet.
	227	+
	228	+	### Model requirements
	229	+
	230	+	`model.requires` currently recognizes:
	231	+
	232	+	\| Capability \| Behavior \|
	233	+	\|---\|---\|
	234	+	\| `tools` \| Accepted. Every model in the current catalog is treated as tool-capable. \|
	235	+	\| `reasoning` \| Requires a catalog model marked as supporting reasoning. \|
	236	+	\| `vision` \| Recognized, but currently fails closed because vision support is not represented in the model catalog. No model qualifies. \|
	237	+
	238	+	Unknown capabilities are rejected. Use `tools`, not the draft spelling `tool_calling`.
	239	+
	240	+	`model.min_context` requires a catalog model with at least that many context tokens.
	241	+
	242	+	`model.preferred` is an ordered list of model IDs. It is a preference, not a provider requirement. Selection proceeds as follows:
	243	+
	244	+	1. An explicitly selected model, if present, must satisfy the requirements.
	245	+	2. The user's configured default is retained if it satisfies them.
	246	+	3. The first compatible model in `preferred` is selected.
	247	+	4. Otherwise, zot chooses a compatible active catalog model.
	248	+	5. If none qualifies, execution stops with an error.
	249	+
	250	+	`model.min_tier` is present in the format shape but is not supported by the local runtime. Leave it empty or omit it. A non-empty value is rejected.
	251	+
	252	+	### Runtime and host requirements
	253	+
	254	+	Use `requirements.os` to restrict the agent to Go operating-system names:
	255	+
	256	+	```json
	257	+	{
	258	+	"requirements": {
	259	+	"os": ["darwin", "linux", "windows"]
	260	+	}
	261	+	}
	262	+	```
	263	+
	264	+	Use `requirements.bin` for commands that must already be on `PATH`:
	265	+
	266	+	```json
	267	+	{
	268	+	"requirements": {
	269	+	"bin": ["git", "python3"]
	270	+	}
	271	+	}
	272	+	```
	273	+
	274	+	Zot checks these requirements before requesting consent. Zotfiles do not have install or postinstall hooks, so authors must document how users can obtain missing programs.
	275	+
	276	+	### Entry fields
	277	+
	278	+	`entry.default_prompt` is used when the user runs the agent without a prompt. It may be a string or `null`:
	279	+
	280	+	```json
	281	+	{
	282	+	"entry": {
	283	+	"default_prompt": "Review the current repository"
	284	+	}
	285	+	}
	286	+	```
	287	+
	288	+	A prompt supplied on the command line takes precedence.
	289	+
	290	+	`entry.greeting` is part of the manifest, but the current local runtime does not render it yet.
	291	+
	292	+	## Filesystem permissions
	293	+
	294	+	Filesystem permissions are enforced by the built-in `read`, `write`, and `edit` tools. Empty or omitted scopes deny the operation.
	295	+
	296	+	Two variables are available in filesystem scopes:
	297	+
	298	+	\| Variable \| Resolves to \|
	299	+	\|---\|---\|
	300	+	\| `${workspace}` \| The current working directory used for the run. \|
	301	+	\| `${agent_data}` \| The agent's persistent private data directory under `$ZOT_HOME/agents/<name>/data/`. \|
	302	+
	303	+	Relative paths are resolved beneath `${workspace}`. For example:
	304	+
	305	+	```json
	306	+	{
	307	+	"permissions": {
	308	+	"fs": {
	309	+	"read": ["src", "go.mod"],
	310	+	"write": ["${agent_data}"]
	311	+	}
	312	+	}
	313	+	}
	314	+	```
	315	+
	316	+	This allows reads under `<workspace>/src` and at `<workspace>/go.mod`, plus writes under the private agent data directory. It does not grant general workspace writes.
	317	+
	318	+	Common permission profiles follow.
	319	+
	320	+	Read-only repository agent:
	321	+
	322	+	```json
	323	+	{
	324	+	"permissions": {
	325	+	"fs": {
	326	+	"read": ["${workspace}"],
	327	+	"write": []
	328	+	},
	329	+	"bash": { "mode": "none" }
	330	+	}
	331	+	}
	332	+	```
	333	+
	334	+	Repository editor with private persistent state:
	335	+
	336	+	```json
	337	+	{
	338	+	"permissions": {
	339	+	"fs": {
	340	+	"read": ["${workspace}", "${agent_data}"],
	341	+	"write": ["${workspace}", "${agent_data}"]
	342	+	},
	343	+	"bash": { "mode": "none" }
	344	+	}
	345	+	}
	346	+	```
	347	+
	348	+	Data-only agent:
	349	+
	350	+	```json
	351	+	{
	352	+	"permissions": {
	353	+	"fs": {
	354	+	"read": ["${agent_data}"],
	355	+	"write": ["${agent_data}"]
	356	+	},
	357	+	"bash": { "mode": "none" }
	358	+	}
	359	+	}
	360	+	```
	361	+
	362	+	Filesystem checks canonicalize existing paths, or the nearest existing parent for a new path, so symlinks cannot be used to escape a declared scope.
	363	+
	364	+	If the working directory changes during a run, `${workspace}` permissions are expanded again for the new directory.
	365	+
	366	+	## Bash permissions
	367	+
	368	+	`permissions.bash.mode` supports three values.
	369	+
	370	+	### `none`
	371	+
	372	+	```json
	373	+	{
	374	+	"bash": { "mode": "none" }
	375	+	}
	376	+	```
	377	+
	378	+	All bash tool calls are denied. This is also the default when `mode` is omitted.
	379	+
	380	+	### `ask`
	381	+
	382	+	```json
	383	+	{
	384	+	"bash": { "mode": "ask" }
	385	+	}
	386	+	```
	387	+
	388	+	Bash is available after the user approves the agent at launch. Consent for an agent using `ask` is requested on every launch and is not cached.
	389	+
	390	+	In the current local runtime, `ask` is launch-time capability consent. It does not open a separate confirmation dialog for every individual bash invocation.
	391	+
	392	+	### `allowlist`
	393	+
	394	+	```json
	395	+	{
	396	+	"bash": {
	397	+	"mode": "allowlist",
	398	+	"allow": ["git", "go", "grep"]
	399	+	}
	400	+	}
	401	+	```
	402	+
	403	+	Every command in a shell expression must be listed. Zot checks commands separated by `;`, `&&`, `\|\|`, and pipes. Paths are reduced to their base command name, so `/usr/bin/git` is checked as `git`. A leading environment assignment is skipped when identifying the command.
	404	+
	405	+	The allowlist rejects shell substitution, newlines, redirection, backticks, `$()`, `<`, and `>`. This intentionally supports simple command pipelines rather than arbitrary shell programs.
	406	+
	407	+	An `allowlist` mode with an empty `allow` array is invalid.
	408	+
	409	+	Only declare commands the agent genuinely needs. `requirements.bin` checks that a command exists, while `permissions.bash.allow` controls whether the agent may invoke it. Agents that execute a required command normally need it in both places.
	410	+
	411	+	## Network and environment permissions
	412	+
	413	+	The manifest shape includes `permissions.net.allow` and `permissions.env.read`, but the local runtime does not enforce them yet. To avoid presenting unenforced declarations as security controls, it rejects manifests containing any network host or environment variable.
	414	+
	415	+	Use empty arrays or omit these sections:
	416	+
	417	+	```json
	418	+	{
	419	+	"permissions": {
	420	+	"net": { "allow": [] },
	421	+	"env": { "read": [] }
	422	+	}
	423	+	}
	424	+	```
	425	+
	426	+	Bundled executable extensions are rejected for the same reason. Network filtering, scrubbed extension environments, and extension confinement belong to a later runtime milestone.
	427	+
	428	+	## Consent and persistent data
	429	+
	430	+	Before the first run, zot prints the agent identity and expanded filesystem and bash permissions, then asks:
	431	+
	432	+	```text
	433	+	Agent code-reviewer@0.1.0 wants to run.
	434	+
	435	+	fs read: /path/to/workspace
	436	+	fs write: none
	437	+	bash: none
	438	+
	439	+	Allow? [y/N]
	440	+	```
	441	+
	442	+	For modes other than `bash: ask`, approval is cached for the exact artifact digest under:
	443	+
	444	+	```text
	445	+	$ZOT_HOME/agents/<name>/consents/<digest>.json
	446	+	```
	447	+
	448	+	Any change to the packaged artifact produces a different digest and requires consent again. `bash: ask` always requires fresh launch consent.
	449	+
	450	+	Non-interactive runs refuse to bypass consent by default. For controlled automation, set:
	451	+
	452	+	```bash
	453	+	ZOT_AGENT_CONSENT=1 zot run ./code-reviewer.zot --print "Review this repository"
	454	+	```
	455	+
	456	+	This environment variable skips the consent prompt. Only use it after independently inspecting and trusting the exact artifact being run.
	457	+
	458	+	Persistent agent data lives under:
	459	+
	460	+	```text
	461	+	$ZOT_HOME/agents/<name>/data/
	462	+	```
	463	+
	464	+	The directory is created for every run, but the agent can access it only when `${agent_data}` appears in the relevant filesystem permission scope.
	465	+
	466	+	## Agent-scoped sessions
	467	+
	468	+	Zotfile sessions are isolated from ordinary zot sessions and from other agents:
	469	+
	470	+	```text
	471	+	$ZOT_HOME/sessions/agents/<name>/
	472	+	```
	473	+
	474	+	Normal session flags still apply, including `--continue`, `--resume`, `--session`, and `--no-session`, but their default storage root is scoped to the active agent.
	475	+
	476	+	## Commands
	477	+
	478	+	### `zot run`
	479	+
	480	+	Run an unpackaged directory during development:
	481	+
	482	+	```bash
	483	+	zot run ./my-agent
	484	+	zot run ./my-agent "Do the task"
	485	+	```
	486	+
	487	+	Run a packed artifact:
	488	+
	489	+	```bash
	490	+	zot run ./my-agent.zot
	491	+	zot run ./my-agent.zot --print "Do the task"
	492	+	zot run ./my-agent.zot --json "Do the task"
	493	+	```
	494	+
	495	+	Arguments after the reference use zot's normal CLI parser, so model, provider, reasoning, cwd, session, tool, and output-mode flags remain available. The manifest still imposes its permission and compatibility ceiling.
	496	+
	497	+	Local filesystem directories, local archive paths, and public GitHub agent-directory URLs are accepted. For GitHub, zot downloads the repository archive into a temporary directory, selects the requested agent subdirectory, validates it, runs it, and removes the downloaded files when the command exits:
	498	+
	499	+	```bash
	500	+	zot run https://github.com/patriceckhart/agents/zot-maintenance --cwd /path/to/zot
	501	+	```
	502	+
	503	+	Both the short subdirectory form above and a standard GitHub tree URL are supported:
	504	+
	505	+	```bash
	506	+	zot run https://github.com/patriceckhart/agents/tree/main/zot-maintenance
	507	+	```
	508	+
	509	+	The short form reads the repository's default branch through GitHub's `HEAD` archive. A tree URL uses the branch or tag in the URL. Private repositories and GitHub references containing `/` are not currently supported. The downloaded source is temporary, but normal agent data, consent receipts, and session transcripts remain under `$ZOT_HOME`.
	510	+
	511	+	Installed names, arbitrary URLs, registry references, and OCI references are not resolved yet.
	512	+
	513	+	### `zot pack`
	514	+
	515	+	```bash
	516	+	zot pack [directory] [output]
	517	+	```
	518	+
	519	+	Examples:
	520	+
	521	+	```bash
	522	+	zot pack
	523	+	zot pack ./my-agent
	524	+	zot pack ./my-agent ./dist/reviewer.zot
	525	+	```
	526	+
	527	+	The default directory is the current directory. When output is omitted, zot uses `<manifest-name>.zot`. If the output has no `.zot` suffix, zot adds one.
	528	+
	529	+	Packing validates the manifest and directory, then creates a zstd-compressed tar archive. Entries are sorted and tar metadata is normalized with fixed timestamps and numeric ownership. The output archive itself is excluded when it is located inside the source directory. Zot prints the SHA-256 digest of the resulting compressed artifact.
	530	+
	531	+	### `zot inspect`
	532	+
	533	+	```bash
	534	+	zot inspect ./my-agent
	535	+	zot inspect ./my-agent.zot
	536	+	zot inspect https://github.com/patriceckhart/agents/zot-maintenance
	537	+	```
	538	+
	539	+	Inspection validates and prints the agent's name, version, description, digest, declared permissions, and complete file list. It does not execute the agent.
	540	+
	541	+	For a directory, the digest is computed from its canonical uncompressed tar representation. For a `.zot` archive, the digest is computed from the archive bytes. Therefore a source-directory digest and its packed-archive digest are not expected to match.
	542	+
	543	+	### `zot verify`
	544	+
	545	+	```bash
	546	+	zot verify ./my-agent.zot
	547	+	```
	548	+
	549	+	The local `verify` command validates that the archive can be safely loaded, validates the manifest and required layout, and prints its SHA-256 digest.
	550	+
	551	+	Despite the command name, it does not verify a publisher signature in the current runtime. Signature and namespace verification are planned for registry distribution.
	552	+
	553	+	## Packaging and extraction limits
	554	+
	555	+	The archive loader applies these limits:
	556	+
	557	+	\| Limit \| Value \|
	558	+	\|---\|---:\|
	559	+	\| Compressed `.zot` file \| 100 MiB \|
	560	+	\| One extracted entry \| 64 MiB \|
	561	+	\| Total extracted content \| 256 MiB \|
	562	+
	563	+	Archive extraction rejects absolute paths and parent traversal. Unsupported tar entry types are ignored. New packages use zstd; gzip-compressed tar archives are accepted only as a compatibility fallback for earlier experiments.
	564	+
	565	+	## Authoring guidance
	566	+
	567	+	1. Start with the narrowest permissions possible. A reviewer usually needs repository reads, not writes or bash.
	568	+	2. Keep `AGENT.md` focused on stable behavior. Put task-specific procedures in skills so the model loads them only when relevant.
	569	+	3. Declare every external command in both `requirements.bin` and the bash allowlist when the agent must execute it.
	570	+	4. Test from a directory first with `zot inspect` and `zot run`.
	571	+	5. Test denied behavior as well as allowed behavior. Ask the agent to attempt an out-of-scope read, write, and command.
	572	+	6. Pack the same source twice and compare behavior and output digests before distributing it.
	573	+	7. Inspect and verify the final archive, not only its source directory.
	574	+	8. Do not claim that network, environment, signatures, extensions, installation, or registry delivery are secured or supported by the local runtime.
	575	+
	576	+	## Current scope
	577	+
	578	+	Implemented now:
	579	+
	580	+	- local directories and `.zot` archives
	581	+	- temporary execution of agent directories from public GitHub repositories
	582	+	- `zot pack`, `zot inspect`, `zot verify`, and `zot run`
	583	+	- canonical tar creation with zstd compression
	584	+	- archive digest reporting and safe extraction limits
	585	+	- `AGENT.md` append or replacement behavior
	586	+	- bundled skills
	587	+	- runtime, OS, and binary requirements
	588	+	- model context and reasoning requirements
	589	+	- filesystem scope enforcement
	590	+	- bash `none`, `ask`, and `allowlist` modes
	591	+	- digest-scoped consent receipts
	592	+	- private agent data directories
	593	+	- agent-scoped sessions
	594	+
	595	+	Not implemented yet:
	596	+
	597	+	- `zot install`, `zot agents`, `zot use`, `zot update`, or `zot publish`
	598	+	- installed-name, arbitrary URL, OCI, or zot.sh index resolution
	599	+	- network allowlist enforcement
	600	+	- environment-variable filtering
	601	+	- safely confined bundled executable extensions
	602	+	- automatic artifact theme loading
	603	+	- agent dependency composition
	604	+	- per-agent Telegram, bot, or RPC selection
	605	+	- `--no-sandbox`, `--trust-bash`, or registry trust override flags
	606	+
	607	+	Treat the unsupported fields and commands in the broader Zotfile proposal as forward-looking design, not as current runtime behavior.

@@ -0,0 +1,607 @@
	1	+	# Zotfile agents
	2	+
	3	+	A Zotfile packages an agent's behavior into one portable `.zot` file. It can contain the agent's instructions, reusable skills, static assets, and metadata describing the runtime, model, operating-system, binary, and tool permissions it needs.
	4	+
	5	+	The current implementation supports creating, inspecting, verifying, and running local directories and `.zot` archives. It can also run an agent directory directly from a public GitHub repository without keeping a clone. Registry distribution, installation, signatures, bundled executable extensions, network permissions, and environment permissions are not implemented yet.
	6	+
	7	+	## Quick start
	8	+
	9	+	Create a directory for the agent:
	10	+
	11	+	```text
	12	+	reviewer/
	13	+	├── manifest.json
	14	+	├── AGENT.md
	15	+	└── skills/
	16	+	└── code-review/SKILL.md
	17	+	```
	18	+
	19	+	Add a minimal `manifest.json`:
	20	+
	21	+	```json
	22	+	{
	23	+	"zotfile": 1,
	24	+	"name": "code-reviewer",
	25	+	"version": "0.1.0",
	26	+	"description": "Reviews a repository and reports actionable findings.",
	27	+	"runtime": {
	28	+	"min_zot": "0.2.76"
	29	+	},
	30	+	"model": {
	31	+	"requires": ["tools"],
	32	+	"min_context": 64000
	33	+	},
	34	+	"permissions": {
	35	+	"fs": {
	36	+	"read": ["${workspace}"],
	37	+	"write": []
	38	+	},
	39	+	"bash": {
	40	+	"mode": "none"
	41	+	}
	42	+	},
	43	+	"requirements": {
	44	+	"os": ["darwin", "linux", "windows"]
	45	+	},
	46	+	"entry": {
	47	+	"greeting": "What should I review?",
	48	+	"default_prompt": null
	49	+	}
	50	+	}
	51	+	```
	52	+
	53	+	Add the agent's standing instructions to `AGENT.md`:
	54	+
	55	+	```markdown
	56	+	# Code reviewer
	57	+
	58	+	Review the current repository without modifying it.
	59	+
	60	+	Prioritize correctness, security, regressions, and missing tests. Report findings
	61	+	in severity order with file and line references. Do not praise the code or
	62	+	summarize files that have no findings.
	63	+	```
	64	+
	65	+	Test the directory directly during development:
	66	+
	67	+	```bash
	68	+	zot inspect ./reviewer
	69	+	zot run ./reviewer
	70	+	zot run ./reviewer "Review the authentication package"
	71	+	```
	72	+
	73	+	Package it when ready:
	74	+
	75	+	```bash
	76	+	zot pack ./reviewer
	77	+	# wrote code-reviewer.zot
	78	+	# digest sha256:...
	79	+
	80	+	zot verify ./code-reviewer.zot
	81	+	zot run ./code-reviewer.zot
	82	+	```
	83	+
	84	+	The first run displays the declared permissions and asks for consent before the agent starts.
	85	+
	86	+	## Directory layout
	87	+
	88	+	```text
	89	+	my-agent/
	90	+	├── manifest.json # identity, requirements, and permissions, required
	91	+	├── AGENT.md # persona and standing instructions, required
	92	+	├── skills/ # SKILL.md directories, optional
	93	+	│ └── my-skill/SKILL.md
	94	+	├── assets/ # static files, optional
	95	+	└── README.md # human-facing documentation, optional
	96	+	```
	97	+
	98	+	Only `manifest.json` and a regular `AGENT.md` file are required. Other ordinary files and directories are included in the archive, but the runtime gives no special behavior to `assets/` or `README.md` yet. Files in `assets/` are not automatically added to the model context or granted filesystem access.
	99	+
	100	+	Do not include executable extensions in `extensions/`. The local runtime rejects any bundled extension directory containing `extension.json` because extension subprocesses cannot yet be confined to the manifest permissions. This is a deliberate fail-closed restriction.
	101	+
	102	+	Symlinks are not supported and cause `zot pack` to fail.
	103	+
	104	+	## `AGENT.md`
	105	+
	106	+	By default, `AGENT.md` is appended to zot's system prompt. It should describe the agent's role, workflow, constraints, output format, and when to load bundled skills.
	107	+
	108	+	Keep capability and security declarations out of this file. Permissions come only from `manifest.json` and are enforced independently of agent-authored prose.
	109	+
	110	+	Set `replace_system_prompt` to `true` in the manifest to use `AGENT.md` as the replacement system prompt:
	111	+
	112	+	```json
	113	+	{
	114	+	"replace_system_prompt": true
	115	+	}
	116	+	```
	117	+
	118	+	Replacement is intended for fully specialized agents. The default layering behavior is usually preferable because it retains zot's normal identity and tool-use guidance.
	119	+
	120	+	## Bundled skills
	121	+
	122	+	Place skills under `skills/<name>/SKILL.md` using the normal zot skill format:
	123	+
	124	+	```text
	125	+	skills/
	126	+	└── investigate-failure/
	127	+	└── SKILL.md
	128	+	```
	129	+
	130	+	```markdown
	131	+	---
	132	+	name: investigate-failure
	133	+	description: Diagnose a failing command from its output and relevant source files.
	134	+	---
	135	+
	136	+	# Investigate failure
	137	+
	138	+	1. Reproduce the failure if permissions allow it.
	139	+	2. Identify the first meaningful error rather than downstream noise.
	140	+	3. Read the implementation and nearest tests.
	141	+	4. Propose the smallest correction and validation plan.
	142	+	```
	143	+
	144	+	Bundled skills are added to normal skill discovery while the Zotfile is running. The model sees their name and description in the skill manifest and can load the full body through the `skill` tool. See [skills.md](skills.md) for the complete skill format.
	145	+
	146	+	## Manifest reference
	147	+
	148	+	The current manifest shape is:
	149	+
	150	+	```json
	151	+	{
	152	+	"zotfile": 1,
	153	+	"name": "code-reviewer",
	154	+	"version": "0.1.0",
	155	+	"description": "Reviews a repository and reports actionable findings.",
	156	+	"license": "MIT",
	157	+	"runtime": {
	158	+	"min_zot": "0.2.76"
	159	+	},
	160	+	"model": {
	161	+	"requires": ["tools", "reasoning"],
	162	+	"min_context": 64000,
	163	+	"preferred": ["claude-opus-4-5", "gpt-5.5"],
	164	+	"min_tier": ""
	165	+	},
	166	+	"permissions": {
	167	+	"fs": {
	168	+	"read": ["${workspace}", "${agent_data}"],
	169	+	"write": ["${agent_data}"]
	170	+	},
	171	+	"bash": {
	172	+	"mode": "allowlist",
	173	+	"allow": ["git", "go"]
	174	+	},
	175	+	"net": {
	176	+	"allow": []
	177	+	},
	178	+	"env": {
	179	+	"read": []
	180	+	}
	181	+	},
	182	+	"requirements": {
	183	+	"bin": ["git", "go"],
	184	+	"os": ["darwin", "linux"]
	185	+	},
	186	+	"entry": {
	187	+	"greeting": "What should I review?",
	188	+	"default_prompt": null
	189	+	},
	190	+	"replace_system_prompt": false
	191	+	}
	192	+	```
	193	+
	194	+	### Top-level fields
	195	+
	196	+	\| Field \| Required \| Current behavior \|
	197	+	\|---\|---:\|---\|
	198	+	\| `zotfile` \| yes \| Format version. Must be `1`. \|
	199	+	\| `name` \| yes \| Local agent identity and session/data namespace. See naming rules below. \|
	200	+	\| `version` \| no \| Displayed in consent and inspection output. Semver is recommended but not currently validated. \|
	201	+	\| `description` \| no \| Displayed by `zot inspect`. \|
	202	+	\| `license` \| no \| Package metadata. Not otherwise interpreted by the local runtime. \|
	203	+	\| `runtime.min_zot` \| no \| Minimum zot version. Older binaries refuse to run the agent. Unversioned development builds cannot satisfy a non-empty minimum. \|
	204	+	\| `model` \| no \| Model capabilities, minimum context, and preferences. \|
	205	+	\| `permissions` \| no \| Filesystem and bash permission ceiling. Omitted scopes deny access. \|
	206	+	\| `requirements` \| no \| Required operating systems and executables. \|
	207	+	\| `entry` \| no \| Initial presentation and prompt metadata. \|
	208	+	\| `replace_system_prompt` \| no \| Replaces rather than appends to the normal system prompt when `true`. Defaults to `false`. \|
	209	+
	210	+	### Name rules
	211	+
	212	+	The local runtime currently accepts a flat lowercase name containing only:
	213	+
	214	+	- `a` to `z`
	215	+	- `0` to `9`
	216	+	- `.`, `-`, and `_`
	217	+
	218	+	Examples:
	219	+
	220	+	```text
	221	+	code-reviewer
	222	+	repo_onboarder
	223	+	acme.audit
	224	+	```
	225	+
	226	+	Names containing `/`, uppercase letters, spaces, or path-like values such as `..` are rejected. Registry-style `namespace/agent` names are reserved for the future distribution runtime and are not accepted locally yet.
	227	+
	228	+	### Model requirements
	229	+
	230	+	`model.requires` currently recognizes:
	231	+
	232	+	\| Capability \| Behavior \|
	233	+	\|---\|---\|
	234	+	\| `tools` \| Accepted. Every model in the current catalog is treated as tool-capable. \|
	235	+	\| `reasoning` \| Requires a catalog model marked as supporting reasoning. \|
	236	+	\| `vision` \| Recognized, but currently fails closed because vision support is not represented in the model catalog. No model qualifies. \|
	237	+
	238	+	Unknown capabilities are rejected. Use `tools`, not the draft spelling `tool_calling`.
	239	+
	240	+	`model.min_context` requires a catalog model with at least that many context tokens.
	241	+
	242	+	`model.preferred` is an ordered list of model IDs. It is a preference, not a provider requirement. Selection proceeds as follows:
	243	+
	244	+	1. An explicitly selected model, if present, must satisfy the requirements.
	245	+	2. The user's configured default is retained if it satisfies them.
	246	+	3. The first compatible model in `preferred` is selected.
	247	+	4. Otherwise, zot chooses a compatible active catalog model.
	248	+	5. If none qualifies, execution stops with an error.
	249	+
	250	+	`model.min_tier` is present in the format shape but is not supported by the local runtime. Leave it empty or omit it. A non-empty value is rejected.
	251	+
	252	+	### Runtime and host requirements
	253	+
	254	+	Use `requirements.os` to restrict the agent to Go operating-system names:
	255	+
	256	+	```json
	257	+	{
	258	+	"requirements": {
	259	+	"os": ["darwin", "linux", "windows"]
	260	+	}
	261	+	}
	262	+	```
	263	+
	264	+	Use `requirements.bin` for commands that must already be on `PATH`:
	265	+
	266	+	```json
	267	+	{
	268	+	"requirements": {
	269	+	"bin": ["git", "python3"]
	270	+	}
	271	+	}
	272	+	```
	273	+
	274	+	Zot checks these requirements before requesting consent. Zotfiles do not have install or postinstall hooks, so authors must document how users can obtain missing programs.
	275	+
	276	+	### Entry fields
	277	+
	278	+	`entry.default_prompt` is used when the user runs the agent without a prompt. It may be a string or `null`:
	279	+
	280	+	```json
	281	+	{
	282	+	"entry": {
	283	+	"default_prompt": "Review the current repository"
	284	+	}
	285	+	}
	286	+	```
	287	+
	288	+	A prompt supplied on the command line takes precedence.
	289	+
	290	+	`entry.greeting` is part of the manifest, but the current local runtime does not render it yet.
	291	+
	292	+	## Filesystem permissions
	293	+
	294	+	Filesystem permissions are enforced by the built-in `read`, `write`, and `edit` tools. Empty or omitted scopes deny the operation.
	295	+
	296	+	Two variables are available in filesystem scopes:
	297	+
	298	+	\| Variable \| Resolves to \|
	299	+	\|---\|---\|
	300	+	\| `${workspace}` \| The current working directory used for the run. \|
	301	+	\| `${agent_data}` \| The agent's persistent private data directory under `$ZOT_HOME/agents/<name>/data/`. \|
	302	+
	303	+	Relative paths are resolved beneath `${workspace}`. For example:
	304	+
	305	+	```json
	306	+	{
	307	+	"permissions": {
	308	+	"fs": {
	309	+	"read": ["src", "go.mod"],
	310	+	"write": ["${agent_data}"]
	311	+	}
	312	+	}
	313	+	}
	314	+	```
	315	+
	316	+	This allows reads under `<workspace>/src` and at `<workspace>/go.mod`, plus writes under the private agent data directory. It does not grant general workspace writes.
	317	+
	318	+	Common permission profiles follow.
	319	+
	320	+	Read-only repository agent:
	321	+
	322	+	```json
	323	+	{
	324	+	"permissions": {
	325	+	"fs": {
	326	+	"read": ["${workspace}"],
	327	+	"write": []
	328	+	},
	329	+	"bash": { "mode": "none" }
	330	+	}
	331	+	}
	332	+	```
	333	+
	334	+	Repository editor with private persistent state:
	335	+
	336	+	```json
	337	+	{
	338	+	"permissions": {
	339	+	"fs": {
	340	+	"read": ["${workspace}", "${agent_data}"],
	341	+	"write": ["${workspace}", "${agent_data}"]
	342	+	},
	343	+	"bash": { "mode": "none" }
	344	+	}
	345	+	}
	346	+	```
	347	+
	348	+	Data-only agent:
	349	+
	350	+	```json
	351	+	{
	352	+	"permissions": {
	353	+	"fs": {
	354	+	"read": ["${agent_data}"],
	355	+	"write": ["${agent_data}"]
	356	+	},
	357	+	"bash": { "mode": "none" }
	358	+	}
	359	+	}
	360	+	```
	361	+
	362	+	Filesystem checks canonicalize existing paths, or the nearest existing parent for a new path, so symlinks cannot be used to escape a declared scope.
	363	+
	364	+	If the working directory changes during a run, `${workspace}` permissions are expanded again for the new directory.
	365	+
	366	+	## Bash permissions
	367	+
	368	+	`permissions.bash.mode` supports three values.
	369	+
	370	+	### `none`
	371	+
	372	+	```json
	373	+	{
	374	+	"bash": { "mode": "none" }
	375	+	}
	376	+	```
	377	+
	378	+	All bash tool calls are denied. This is also the default when `mode` is omitted.
	379	+
	380	+	### `ask`
	381	+
	382	+	```json
	383	+	{
	384	+	"bash": { "mode": "ask" }
	385	+	}
	386	+	```
	387	+
	388	+	Bash is available after the user approves the agent at launch. Consent for an agent using `ask` is requested on every launch and is not cached.
	389	+
	390	+	In the current local runtime, `ask` is launch-time capability consent. It does not open a separate confirmation dialog for every individual bash invocation.
	391	+
	392	+	### `allowlist`
	393	+
	394	+	```json
	395	+	{
	396	+	"bash": {
	397	+	"mode": "allowlist",
	398	+	"allow": ["git", "go", "grep"]
	399	+	}
	400	+	}
	401	+	```
	402	+
	403	+	Every command in a shell expression must be listed. Zot checks commands separated by `;`, `&&`, `\|\|`, and pipes. Paths are reduced to their base command name, so `/usr/bin/git` is checked as `git`. A leading environment assignment is skipped when identifying the command.
	404	+
	405	+	The allowlist rejects shell substitution, newlines, redirection, backticks, `$()`, `<`, and `>`. This intentionally supports simple command pipelines rather than arbitrary shell programs.
	406	+
	407	+	An `allowlist` mode with an empty `allow` array is invalid.
	408	+
	409	+	Only declare commands the agent genuinely needs. `requirements.bin` checks that a command exists, while `permissions.bash.allow` controls whether the agent may invoke it. Agents that execute a required command normally need it in both places.
	410	+
	411	+	## Network and environment permissions
	412	+
	413	+	The manifest shape includes `permissions.net.allow` and `permissions.env.read`, but the local runtime does not enforce them yet. To avoid presenting unenforced declarations as security controls, it rejects manifests containing any network host or environment variable.
	414	+
	415	+	Use empty arrays or omit these sections:
	416	+
	417	+	```json
	418	+	{
	419	+	"permissions": {
	420	+	"net": { "allow": [] },
	421	+	"env": { "read": [] }
	422	+	}
	423	+	}
	424	+	```
	425	+
	426	+	Bundled executable extensions are rejected for the same reason. Network filtering, scrubbed extension environments, and extension confinement belong to a later runtime milestone.
	427	+
	428	+	## Consent and persistent data
	429	+
	430	+	Before the first run, zot prints the agent identity and expanded filesystem and bash permissions, then asks:
	431	+
	432	+	```text
	433	+	Agent code-reviewer@0.1.0 wants to run.
	434	+
	435	+	fs read: /path/to/workspace
	436	+	fs write: none
	437	+	bash: none
	438	+
	439	+	Allow? [y/N]
	440	+	```
	441	+
	442	+	For modes other than `bash: ask`, approval is cached for the exact artifact digest under:
	443	+
	444	+	```text
	445	+	$ZOT_HOME/agents/<name>/consents/<digest>.json
	446	+	```
	447	+
	448	+	Any change to the packaged artifact produces a different digest and requires consent again. `bash: ask` always requires fresh launch consent.
	449	+
	450	+	Non-interactive runs refuse to bypass consent by default. For controlled automation, set:
	451	+
	452	+	```bash
	453	+	ZOT_AGENT_CONSENT=1 zot run ./code-reviewer.zot --print "Review this repository"
	454	+	```
	455	+
	456	+	This environment variable skips the consent prompt. Only use it after independently inspecting and trusting the exact artifact being run.
	457	+
	458	+	Persistent agent data lives under:
	459	+
	460	+	```text
	461	+	$ZOT_HOME/agents/<name>/data/
	462	+	```
	463	+
	464	+	The directory is created for every run, but the agent can access it only when `${agent_data}` appears in the relevant filesystem permission scope.
	465	+
	466	+	## Agent-scoped sessions
	467	+
	468	+	Zotfile sessions are isolated from ordinary zot sessions and from other agents:
	469	+
	470	+	```text
	471	+	$ZOT_HOME/sessions/agents/<name>/
	472	+	```
	473	+
	474	+	Normal session flags still apply, including `--continue`, `--resume`, `--session`, and `--no-session`, but their default storage root is scoped to the active agent.
	475	+
	476	+	## Commands
	477	+
	478	+	### `zot run`
	479	+
	480	+	Run an unpackaged directory during development:
	481	+
	482	+	```bash
	483	+	zot run ./my-agent
	484	+	zot run ./my-agent "Do the task"
	485	+	```
	486	+
	487	+	Run a packed artifact:
	488	+
	489	+	```bash
	490	+	zot run ./my-agent.zot
	491	+	zot run ./my-agent.zot --print "Do the task"
	492	+	zot run ./my-agent.zot --json "Do the task"
	493	+	```
	494	+
	495	+	Arguments after the reference use zot's normal CLI parser, so model, provider, reasoning, cwd, session, tool, and output-mode flags remain available. The manifest still imposes its permission and compatibility ceiling.
	496	+
	497	+	Local filesystem directories, local archive paths, and public GitHub agent-directory URLs are accepted. For GitHub, zot downloads the repository archive into a temporary directory, selects the requested agent subdirectory, validates it, runs it, and removes the downloaded files when the command exits:
	498	+
	499	+	```bash
	500	+	zot run https://github.com/patriceckhart/agents/zot-maintenance --cwd /path/to/zot
	501	+	```
	502	+
	503	+	Both the short subdirectory form above and a standard GitHub tree URL are supported:
	504	+
	505	+	```bash
	506	+	zot run https://github.com/patriceckhart/agents/tree/main/zot-maintenance
	507	+	```
	508	+
	509	+	The short form reads the repository's default branch through GitHub's `HEAD` archive. A tree URL uses the branch or tag in the URL. Private repositories and GitHub references containing `/` are not currently supported. The downloaded source is temporary, but normal agent data, consent receipts, and session transcripts remain under `$ZOT_HOME`.
	510	+
	511	+	Installed names, arbitrary URLs, registry references, and OCI references are not resolved yet.
	512	+
	513	+	### `zot pack`
	514	+
	515	+	```bash
	516	+	zot pack [directory] [output]
	517	+	```
	518	+
	519	+	Examples:
	520	+
	521	+	```bash
	522	+	zot pack
	523	+	zot pack ./my-agent
	524	+	zot pack ./my-agent ./dist/reviewer.zot
	525	+	```
	526	+
	527	+	The default directory is the current directory. When output is omitted, zot uses `<manifest-name>.zot`. If the output has no `.zot` suffix, zot adds one.
	528	+
	529	+	Packing validates the manifest and directory, then creates a zstd-compressed tar archive. Entries are sorted and tar metadata is normalized with fixed timestamps and numeric ownership. The output archive itself is excluded when it is located inside the source directory. Zot prints the SHA-256 digest of the resulting compressed artifact.
	530	+
	531	+	### `zot inspect`
	532	+
	533	+	```bash
	534	+	zot inspect ./my-agent
	535	+	zot inspect ./my-agent.zot
	536	+	zot inspect https://github.com/patriceckhart/agents/zot-maintenance
	537	+	```
	538	+
	539	+	Inspection validates and prints the agent's name, version, description, digest, declared permissions, and complete file list. It does not execute the agent.
	540	+
	541	+	For a directory, the digest is computed from its canonical uncompressed tar representation. For a `.zot` archive, the digest is computed from the archive bytes. Therefore a source-directory digest and its packed-archive digest are not expected to match.
	542	+
	543	+	### `zot verify`
	544	+
	545	+	```bash
	546	+	zot verify ./my-agent.zot
	547	+	```
	548	+
	549	+	The local `verify` command validates that the archive can be safely loaded, validates the manifest and required layout, and prints its SHA-256 digest.
	550	+
	551	+	Despite the command name, it does not verify a publisher signature in the current runtime. Signature and namespace verification are planned for registry distribution.
	552	+
	553	+	## Packaging and extraction limits
	554	+
	555	+	The archive loader applies these limits:
	556	+
	557	+	\| Limit \| Value \|
	558	+	\|---\|---:\|
	559	+	\| Compressed `.zot` file \| 100 MiB \|
	560	+	\| One extracted entry \| 64 MiB \|
	561	+	\| Total extracted content \| 256 MiB \|
	562	+
	563	+	Archive extraction rejects absolute paths and parent traversal. Unsupported tar entry types are ignored. New packages use zstd; gzip-compressed tar archives are accepted only as a compatibility fallback for earlier experiments.
	564	+
	565	+	## Authoring guidance
	566	+
	567	+	1. Start with the narrowest permissions possible. A reviewer usually needs repository reads, not writes or bash.
	568	+	2. Keep `AGENT.md` focused on stable behavior. Put task-specific procedures in skills so the model loads them only when relevant.
	569	+	3. Declare every external command in both `requirements.bin` and the bash allowlist when the agent must execute it.
	570	+	4. Test from a directory first with `zot inspect` and `zot run`.
	571	+	5. Test denied behavior as well as allowed behavior. Ask the agent to attempt an out-of-scope read, write, and command.
	572	+	6. Pack the same source twice and compare behavior and output digests before distributing it.
	573	+	7. Inspect and verify the final archive, not only its source directory.
	574	+	8. Do not claim that network, environment, signatures, extensions, installation, or registry delivery are secured or supported by the local runtime.
	575	+
	576	+	## Current scope
	577	+
	578	+	Implemented now:
	579	+
	580	+	- local directories and `.zot` archives
	581	+	- temporary execution of agent directories from public GitHub repositories
	582	+	- `zot pack`, `zot inspect`, `zot verify`, and `zot run`
	583	+	- canonical tar creation with zstd compression
	584	+	- archive digest reporting and safe extraction limits
	585	+	- `AGENT.md` append or replacement behavior
	586	+	- bundled skills
	587	+	- runtime, OS, and binary requirements
	588	+	- model context and reasoning requirements
	589	+	- filesystem scope enforcement
	590	+	- bash `none`, `ask`, and `allowlist` modes
	591	+	- digest-scoped consent receipts
	592	+	- private agent data directories
	593	+	- agent-scoped sessions
	594	+
	595	+	Not implemented yet:
	596	+
	597	+	- `zot install`, `zot agents`, `zot use`, `zot update`, or `zot publish`
	598	+	- installed-name, arbitrary URL, OCI, or zot.sh index resolution
	599	+	- network allowlist enforcement
	600	+	- environment-variable filtering
	601	+	- safely confined bundled executable extensions
	602	+	- automatic artifact theme loading
	603	+	- agent dependency composition
	604	+	- per-agent Telegram, bot, or RPC selection
	605	+	- `--no-sandbox`, `--trust-bash`, or registry trust override flags
	606	+
	607	+	Treat the unsupported fields and commands in the broader Zotfile proposal as forward-looking design, not as current runtime behavior.

M packages/agent/zotfile.go +132 -3


@@ -9,6 +9,8 @@ import (
9	9		"encoding/json"
10	10		"fmt"
11	11		"io"
	12	+	"net/http"
	13	+	"net/url"
12	14		"os"
13	15		"os/exec"
14	16		"path/filepath"

@@ -75,12 +77,12 @@ func runZotfileCommand(rawArgs []string, version string) (bool, error) {
75	77		return true, zotPack(dir, out)
76	78		case "inspect":
77	79		if len(rawArgs) < 2 {
78		-	return true, fmt.Errorf("zot inspect requires a .zot file or directory")
	80	+	return true, fmt.Errorf("zot inspect requires a .zot file, directory, or GitHub URL")
79	81		}
80	82		return true, zotInspect(rawArgs[1])
81	83		case "verify":
82	84		if len(rawArgs) < 2 {
83		-	return true, fmt.Errorf("zot verify requires a .zot file or directory")
	85	+	return true, fmt.Errorf("zot verify requires a .zot file, directory, or GitHub URL")
84	86		}
85	87		zf, cleanup, err := loadZotfile(rawArgs[1])
86	88		if cleanup != nil {

@@ -93,7 +95,7 @@ func runZotfileCommand(rawArgs []string, version string) (bool, error) {
93	95		return true, nil
94	96		case "run":
95	97		if len(rawArgs) < 2 {
96		-	return true, fmt.Errorf("zot run requires a .zot file or directory")
	98	+	return true, fmt.Errorf("zot run requires a .zot file, directory, or GitHub URL")
97	99		}
98	100		ref := rawArgs[1]
99	101		rest := rawArgs[2:]

@@ -316,6 +318,9 @@ func zotPack(dir, out string) error {
316	318		}
317	319
318	320		func loadZotfile(ref string) (zotfileLoaded, func(), error) {
	321	+	if u, err := url.Parse(ref); err == nil && (u.Scheme == "http" \|\| u.Scheme == "https") {
	322	+	return loadRemoteZotfile(u)
	323	+	}
319	324		info, err := os.Stat(ref)
320	325		if err != nil {
321	326		return zotfileLoaded{}, nil, err

@@ -353,6 +358,130 @@ func loadZotfile(ref string) (zotfileLoaded, func(), error) {
353	358		return zotfileLoaded{Dir: tmp, Temp: true, Digest: digest, Manifest: m}, cleanup, nil
354	359		}
355	360
	361	+	var zotfileHTTPClient = &http.Client{Timeout: 60 * time.Second}
	362	+
	363	+	var githubArchiveURL = func(owner, repo, ref string) string {
	364	+	return fmt.Sprintf("https://github.com/%s/%s/archive/%s.tar.gz", owner, repo, url.PathEscape(ref))
	365	+	}
	366	+
	367	+	func loadRemoteZotfile(u *url.URL) (zotfileLoaded, func(), error) {
	368	+	if !strings.EqualFold(u.Hostname(), "github.com") {
	369	+	return zotfileLoaded{}, nil, fmt.Errorf("unsupported zotfile URL host %q; only github.com agent directories are supported", u.Hostname())
	370	+	}
	371	+	owner, repo, ref, subdir, err := parseGitHubAgentURL(u)
	372	+	if err != nil {
	373	+	return zotfileLoaded{}, nil, err
	374	+	}
	375	+	tmp, err := os.MkdirTemp("", "zotfile-github-*")
	376	+	if err != nil {
	377	+	return zotfileLoaded{}, nil, err
	378	+	}
	379	+	cleanup := func() { _ = os.RemoveAll(tmp) }
	380	+	if err := downloadGitHubArchive(githubArchiveURL(owner, repo, ref), tmp); err != nil {
	381	+	cleanup()
	382	+	return zotfileLoaded{}, nil, err
	383	+	}
	384	+	root, err := singleExtractedRoot(tmp)
	385	+	if err != nil {
	386	+	cleanup()
	387	+	return zotfileLoaded{}, nil, err
	388	+	}
	389	+	dir := filepath.Join(root, filepath.FromSlash(subdir))
	390	+	if subdir == "" {
	391	+	dir = root
	392	+	}
	393	+	if !pathWithin(root, dir) {
	394	+	cleanup()
	395	+	return zotfileLoaded{}, nil, fmt.Errorf("unsafe GitHub agent path %q", subdir)
	396	+	}
	397	+	m, err := readZotManifest(dir)
	398	+	if err != nil {
	399	+	cleanup()
	400	+	return zotfileLoaded{}, nil, fmt.Errorf("GitHub agent %s/%s/%s: %w", owner, repo, subdir, err)
	401	+	}
	402	+	if err := validateZotfileDir(dir); err != nil {
	403	+	cleanup()
	404	+	return zotfileLoaded{}, nil, err
	405	+	}
	406	+	return zotfileLoaded{Dir: dir, Temp: true, Digest: digestDirectory(dir), Manifest: m}, cleanup, nil
	407	+	}
	408	+
	409	+	func parseGitHubAgentURL(u *url.URL) (owner, repo, ref, subdir string, err error) {
	410	+	parts := strings.Split(strings.Trim(u.EscapedPath(), "/"), "/")
	411	+	for i := range parts {
	412	+	parts[i], err = url.PathUnescape(parts[i])
	413	+	if err != nil {
	414	+	return "", "", "", "", fmt.Errorf("invalid GitHub URL path: %w", err)
	415	+	}
	416	+	}
	417	+	if len(parts) < 2 \|\| parts[0] == "" \|\| parts[1] == "" {
	418	+	return "", "", "", "", fmt.Errorf("GitHub agent URL must include an owner and repository")
	419	+	}
	420	+	owner, repo, ref = parts[0], strings.TrimSuffix(parts[1], ".git"), "HEAD"
	421	+	if len(parts) >= 4 && parts[2] == "tree" {
	422	+	ref = parts[3]
	423	+	subdir = strings.Join(parts[4:], "/")
	424	+	} else {
	425	+	subdir = strings.Join(parts[2:], "/")
	426	+	}
	427	+	if repo == "" \|\| ref == "" {
	428	+	return "", "", "", "", fmt.Errorf("invalid GitHub agent URL")
	429	+	}
	430	+	clean := strings.TrimPrefix(filepath.ToSlash(filepath.Clean(filepath.FromSlash(subdir))), "./")
	431	+	if clean == "." {
	432	+	clean = ""
	433	+	}
	434	+	if clean == ".." \|\| strings.HasPrefix(clean, "../") {
	435	+	return "", "", "", "", fmt.Errorf("unsafe GitHub agent path %q", subdir)
	436	+	}
	437	+	return owner, repo, ref, clean, nil
	438	+	}
	439	+
	440	+	func downloadGitHubArchive(archiveURL, dst string) error {
	441	+	req, err := http.NewRequest(http.MethodGet, archiveURL, nil)
	442	+	if err != nil {
	443	+	return err
	444	+	}
	445	+	req.Header.Set("User-Agent", "zot")
	446	+	resp, err := zotfileHTTPClient.Do(req)
	447	+	if err != nil {
	448	+	return fmt.Errorf("download GitHub repository: %w", err)
	449	+	}
	450	+	defer resp.Body.Close()
	451	+	if resp.StatusCode != http.StatusOK {
	452	+	return fmt.Errorf("download GitHub repository: HTTP %d", resp.StatusCode)
	453	+	}
	454	+	limited := &io.LimitedReader{R: resp.Body, N: maxZotfileCompressedSize + 1}
	455	+	gr, err := gzip.NewReader(limited)
	456	+	if err != nil {
	457	+	return fmt.Errorf("read GitHub archive: %w", err)
	458	+	}
	459	+	defer gr.Close()
	460	+	if err := untar(gr, dst); err != nil {
	461	+	return fmt.Errorf("extract GitHub archive: %w", err)
	462	+	}
	463	+	if limited.N <= 0 {
	464	+	return fmt.Errorf("GitHub archive exceeds %d MiB compressed size limit", maxZotfileCompressedSize>>20)
	465	+	}
	466	+	return nil
	467	+	}
	468	+
	469	+	func pathWithin(root, target string) bool {
	470	+	rel, err := filepath.Rel(root, target)
	471	+	return err == nil && rel != ".." && !strings.HasPrefix(rel, ".."+string(filepath.Separator))
	472	+	}
	473	+
	474	+	func singleExtractedRoot(dir string) (string, error) {
	475	+	entries, err := os.ReadDir(dir)
	476	+	if err != nil {
	477	+	return "", err
	478	+	}
	479	+	if len(entries) != 1 \|\| !entries[0].IsDir() {
	480	+	return "", fmt.Errorf("GitHub archive has an unexpected layout")
	481	+	}
	482	+	return filepath.Join(dir, entries[0].Name()), nil
	483	+	}
	484	+
356	485		func readZotManifest(dir string) (ZotfileManifest, error) {
357	486		var m ZotfileManifest
358	487		b, err := os.ReadFile(filepath.Join(dir, "manifest.json"))


@@ -9,6 +9,8 @@ import (
9		"encoding/json"	9		"encoding/json"
10		"fmt"	10		"fmt"
11		"io"	11		"io"
			12	+	"net/http"
			13	+	"net/url"
12		"os"	14		"os"
13		"os/exec"	15		"os/exec"
14		"path/filepath"	16		"path/filepath"

@@ -75,12 +77,12 @@ func runZotfileCommand(rawArgs []string, version string) (bool, error) {
75		return true, zotPack(dir, out)	77		return true, zotPack(dir, out)
76		case "inspect":	78		case "inspect":
77		if len(rawArgs) < 2 {	79		if len(rawArgs) < 2 {
78	-	return true, fmt.Errorf("zot inspect requires a .zot file or directory")	80	+	return true, fmt.Errorf("zot inspect requires a .zot file, directory, or GitHub URL")
79		}	81		}
80		return true, zotInspect(rawArgs[1])	82		return true, zotInspect(rawArgs[1])
81		case "verify":	83		case "verify":
82		if len(rawArgs) < 2 {	84		if len(rawArgs) < 2 {
83	-	return true, fmt.Errorf("zot verify requires a .zot file or directory")	85	+	return true, fmt.Errorf("zot verify requires a .zot file, directory, or GitHub URL")
84		}	86		}
85		zf, cleanup, err := loadZotfile(rawArgs[1])	87		zf, cleanup, err := loadZotfile(rawArgs[1])
86		if cleanup != nil {	88		if cleanup != nil {

@@ -93,7 +95,7 @@ func runZotfileCommand(rawArgs []string, version string) (bool, error) {
93		return true, nil	95		return true, nil
94		case "run":	96		case "run":
95		if len(rawArgs) < 2 {	97		if len(rawArgs) < 2 {
96	-	return true, fmt.Errorf("zot run requires a .zot file or directory")	98	+	return true, fmt.Errorf("zot run requires a .zot file, directory, or GitHub URL")
97		}	99		}
98		ref := rawArgs[1]	100		ref := rawArgs[1]
99		rest := rawArgs[2:]	101		rest := rawArgs[2:]

@@ -316,6 +318,9 @@ func zotPack(dir, out string) error {
316		}	318		}
317			319
318		func loadZotfile(ref string) (zotfileLoaded, func(), error) {	320		func loadZotfile(ref string) (zotfileLoaded, func(), error) {
			321	+	if u, err := url.Parse(ref); err == nil && (u.Scheme == "http" \|\| u.Scheme == "https") {
			322	+	return loadRemoteZotfile(u)
			323	+	}
319		info, err := os.Stat(ref)	324		info, err := os.Stat(ref)
320		if err != nil {	325		if err != nil {
321		return zotfileLoaded{}, nil, err	326		return zotfileLoaded{}, nil, err

@@ -353,6 +358,130 @@ func loadZotfile(ref string) (zotfileLoaded, func(), error) {
353		return zotfileLoaded{Dir: tmp, Temp: true, Digest: digest, Manifest: m}, cleanup, nil	358		return zotfileLoaded{Dir: tmp, Temp: true, Digest: digest, Manifest: m}, cleanup, nil
354		}	359		}
355			360
			361	+	var zotfileHTTPClient = &http.Client{Timeout: 60 * time.Second}
			362	+
			363	+	var githubArchiveURL = func(owner, repo, ref string) string {
			364	+	return fmt.Sprintf("https://github.com/%s/%s/archive/%s.tar.gz", owner, repo, url.PathEscape(ref))
			365	+	}
			366	+
			367	+	func loadRemoteZotfile(u *url.URL) (zotfileLoaded, func(), error) {
			368	+	if !strings.EqualFold(u.Hostname(), "github.com") {
			369	+	return zotfileLoaded{}, nil, fmt.Errorf("unsupported zotfile URL host %q; only github.com agent directories are supported", u.Hostname())
			370	+	}
			371	+	owner, repo, ref, subdir, err := parseGitHubAgentURL(u)
			372	+	if err != nil {
			373	+	return zotfileLoaded{}, nil, err
			374	+	}
			375	+	tmp, err := os.MkdirTemp("", "zotfile-github-*")
			376	+	if err != nil {
			377	+	return zotfileLoaded{}, nil, err
			378	+	}
			379	+	cleanup := func() { _ = os.RemoveAll(tmp) }
			380	+	if err := downloadGitHubArchive(githubArchiveURL(owner, repo, ref), tmp); err != nil {
			381	+	cleanup()
			382	+	return zotfileLoaded{}, nil, err
			383	+	}
			384	+	root, err := singleExtractedRoot(tmp)
			385	+	if err != nil {
			386	+	cleanup()
			387	+	return zotfileLoaded{}, nil, err
			388	+	}
			389	+	dir := filepath.Join(root, filepath.FromSlash(subdir))
			390	+	if subdir == "" {
			391	+	dir = root
			392	+	}
			393	+	if !pathWithin(root, dir) {
			394	+	cleanup()
			395	+	return zotfileLoaded{}, nil, fmt.Errorf("unsafe GitHub agent path %q", subdir)
			396	+	}
			397	+	m, err := readZotManifest(dir)
			398	+	if err != nil {
			399	+	cleanup()
			400	+	return zotfileLoaded{}, nil, fmt.Errorf("GitHub agent %s/%s/%s: %w", owner, repo, subdir, err)
			401	+	}
			402	+	if err := validateZotfileDir(dir); err != nil {
			403	+	cleanup()
			404	+	return zotfileLoaded{}, nil, err
			405	+	}
			406	+	return zotfileLoaded{Dir: dir, Temp: true, Digest: digestDirectory(dir), Manifest: m}, cleanup, nil
			407	+	}
			408	+
			409	+	func parseGitHubAgentURL(u *url.URL) (owner, repo, ref, subdir string, err error) {
			410	+	parts := strings.Split(strings.Trim(u.EscapedPath(), "/"), "/")
			411	+	for i := range parts {
			412	+	parts[i], err = url.PathUnescape(parts[i])
			413	+	if err != nil {
			414	+	return "", "", "", "", fmt.Errorf("invalid GitHub URL path: %w", err)
			415	+	}
			416	+	}
			417	+	if len(parts) < 2 \|\| parts[0] == "" \|\| parts[1] == "" {
			418	+	return "", "", "", "", fmt.Errorf("GitHub agent URL must include an owner and repository")
			419	+	}
			420	+	owner, repo, ref = parts[0], strings.TrimSuffix(parts[1], ".git"), "HEAD"
			421	+	if len(parts) >= 4 && parts[2] == "tree" {
			422	+	ref = parts[3]
			423	+	subdir = strings.Join(parts[4:], "/")
			424	+	} else {
			425	+	subdir = strings.Join(parts[2:], "/")
			426	+	}
			427	+	if repo == "" \|\| ref == "" {
			428	+	return "", "", "", "", fmt.Errorf("invalid GitHub agent URL")
			429	+	}
			430	+	clean := strings.TrimPrefix(filepath.ToSlash(filepath.Clean(filepath.FromSlash(subdir))), "./")
			431	+	if clean == "." {
			432	+	clean = ""
			433	+	}
			434	+	if clean == ".." \|\| strings.HasPrefix(clean, "../") {
			435	+	return "", "", "", "", fmt.Errorf("unsafe GitHub agent path %q", subdir)
			436	+	}
			437	+	return owner, repo, ref, clean, nil
			438	+	}
			439	+
			440	+	func downloadGitHubArchive(archiveURL, dst string) error {
			441	+	req, err := http.NewRequest(http.MethodGet, archiveURL, nil)
			442	+	if err != nil {
			443	+	return err
			444	+	}
			445	+	req.Header.Set("User-Agent", "zot")
			446	+	resp, err := zotfileHTTPClient.Do(req)
			447	+	if err != nil {
			448	+	return fmt.Errorf("download GitHub repository: %w", err)
			449	+	}
			450	+	defer resp.Body.Close()
			451	+	if resp.StatusCode != http.StatusOK {
			452	+	return fmt.Errorf("download GitHub repository: HTTP %d", resp.StatusCode)
			453	+	}
			454	+	limited := &io.LimitedReader{R: resp.Body, N: maxZotfileCompressedSize + 1}
			455	+	gr, err := gzip.NewReader(limited)
			456	+	if err != nil {
			457	+	return fmt.Errorf("read GitHub archive: %w", err)
			458	+	}
			459	+	defer gr.Close()
			460	+	if err := untar(gr, dst); err != nil {
			461	+	return fmt.Errorf("extract GitHub archive: %w", err)
			462	+	}
			463	+	if limited.N <= 0 {
			464	+	return fmt.Errorf("GitHub archive exceeds %d MiB compressed size limit", maxZotfileCompressedSize>>20)
			465	+	}
			466	+	return nil
			467	+	}
			468	+
			469	+	func pathWithin(root, target string) bool {
			470	+	rel, err := filepath.Rel(root, target)
			471	+	return err == nil && rel != ".." && !strings.HasPrefix(rel, ".."+string(filepath.Separator))
			472	+	}
			473	+
			474	+	func singleExtractedRoot(dir string) (string, error) {
			475	+	entries, err := os.ReadDir(dir)
			476	+	if err != nil {
			477	+	return "", err
			478	+	}
			479	+	if len(entries) != 1 \|\| !entries[0].IsDir() {
			480	+	return "", fmt.Errorf("GitHub archive has an unexpected layout")
			481	+	}
			482	+	return filepath.Join(dir, entries[0].Name()), nil
			483	+	}
			484	+
356		func readZotManifest(dir string) (ZotfileManifest, error) {	485		func readZotManifest(dir string) (ZotfileManifest, error) {
357		var m ZotfileManifest	486		var m ZotfileManifest
358		b, err := os.ReadFile(filepath.Join(dir, "manifest.json"))	487		b, err := os.ReadFile(filepath.Join(dir, "manifest.json"))

M packages/agent/zotfile_test.go +75 -0


@@ -3,6 +3,10 @@ package agent
3	3		import (
4	4		"archive/tar"
5	5		"bytes"
	6	+	"compress/gzip"
	7	+	"net/http"
	8	+	"net/http/httptest"
	9	+	"net/url"
6	10		"os"
7	11		"path/filepath"
8	12		"strings"

@@ -100,6 +104,77 @@ func TestUntarRejectsTraversalAndOversizedEntry(t *testing.T) {
100	104		}
101	105		}
102	106
	107	+	func TestParseGitHubAgentURL(t *testing.T) {
	108	+	tests := []struct {
	109	+	input string
	110	+	owner, repo, ref, dir string
	111	+	}{
	112	+	{"https://github.com/patriceckhart/agents/zot-maintenance", "patriceckhart", "agents", "HEAD", "zot-maintenance"},
	113	+	{"https://github.com/patriceckhart/agents/tree/main/zot-maintenance", "patriceckhart", "agents", "main", "zot-maintenance"},
	114	+	{"https://github.com/acme/agent.git", "acme", "agent", "HEAD", ""},
	115	+	}
	116	+	for _, tt := range tests {
	117	+	u, err := url.Parse(tt.input)
	118	+	if err != nil {
	119	+	t.Fatal(err)
	120	+	}
	121	+	owner, repo, ref, dir, err := parseGitHubAgentURL(u)
	122	+	if err != nil {
	123	+	t.Fatalf("parse %s: %v", tt.input, err)
	124	+	}
	125	+	if owner != tt.owner \|\| repo != tt.repo \|\| ref != tt.ref \|\| dir != tt.dir {
	126	+	t.Fatalf("parse %s = %q, %q, %q, %q", tt.input, owner, repo, ref, dir)
	127	+	}
	128	+	}
	129	+	}
	130	+
	131	+	func TestLoadRemoteZotfileDownloadsTemporaryGitHubArchive(t *testing.T) {
	132	+	var archive bytes.Buffer
	133	+	gz := gzip.NewWriter(&archive)
	134	+	tw := tar.NewWriter(gz)
	135	+	files := map[string]string{
	136	+	"agents-main/zot-maintenance/manifest.json": `{"zotfile":1,"name":"zot-maintenance"}`,
	137	+	"agents-main/zot-maintenance/AGENT.md": "Maintain zot.",
	138	+	}
	139	+	for name, content := range files {
	140	+	if err := tw.WriteHeader(&tar.Header{Name: name, Mode: 0o600, Size: int64(len(content))}); err != nil {
	141	+	t.Fatal(err)
	142	+	}
	143	+	if _, err := tw.Write([]byte(content)); err != nil {
	144	+	t.Fatal(err)
	145	+	}
	146	+	}
	147	+	if err := tw.Close(); err != nil {
	148	+	t.Fatal(err)
	149	+	}
	150	+	if err := gz.Close(); err != nil {
	151	+	t.Fatal(err)
	152	+	}
	153	+
	154	+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
	155	+	w.Header().Set("Content-Type", "application/gzip")
	156	+	_, _ = w.Write(archive.Bytes())
	157	+	}))
	158	+	defer server.Close()
	159	+	oldArchiveURL := githubArchiveURL
	160	+	githubArchiveURL = func(_, _, _ string) string { return server.URL }
	161	+	t.Cleanup(func() { githubArchiveURL = oldArchiveURL })
	162	+
	163	+	u, _ := url.Parse("https://github.com/patriceckhart/agents/zot-maintenance")
	164	+	zf, cleanup, err := loadRemoteZotfile(u)
	165	+	if err != nil {
	166	+	t.Fatal(err)
	167	+	}
	168	+	if zf.Manifest.Name != "zot-maintenance" \|\| !zf.Temp {
	169	+	t.Fatalf("unexpected zotfile: %+v", zf)
	170	+	}
	171	+	root := filepath.Dir(filepath.Dir(zf.Dir))
	172	+	cleanup()
	173	+	if _, err := os.Stat(root); !os.IsNotExist(err) {
	174	+	t.Fatalf("temporary checkout was not removed: %v", err)
	175	+	}
	176	+	}
	177	+
103	178		func TestPermissionSummaryShowsDeniedScopes(t *testing.T) {
104	179		got := permissionSummary(tools.PermissionSet{})
105	180		if !strings.Contains(got, "fs read: none") \|\| !strings.Contains(got, "fs write: none") {


@@ -3,6 +3,10 @@ package agent
3	import (	3		import (
4	"archive/tar"	4		"archive/tar"
5	"bytes"	5		"bytes"
		6	+	"compress/gzip"
		7	+	"net/http"
		8	+	"net/http/httptest"
		9	+	"net/url"
6	"os"	10		"os"
7	"path/filepath"	11		"path/filepath"
8	"strings"	12		"strings"

@@ -100,6 +104,77 @@ func TestUntarRejectsTraversalAndOversizedEntry(t *testing.T) {
100	}	104		}
101	}	105		}
102		106
		107	+	func TestParseGitHubAgentURL(t *testing.T) {
		108	+	tests := []struct {
		109	+	input string
		110	+	owner, repo, ref, dir string
		111	+	}{
		112	+	{"https://github.com/patriceckhart/agents/zot-maintenance", "patriceckhart", "agents", "HEAD", "zot-maintenance"},
		113	+	{"https://github.com/patriceckhart/agents/tree/main/zot-maintenance", "patriceckhart", "agents", "main", "zot-maintenance"},
		114	+	{"https://github.com/acme/agent.git", "acme", "agent", "HEAD", ""},
		115	+	}
		116	+	for _, tt := range tests {
		117	+	u, err := url.Parse(tt.input)
		118	+	if err != nil {
		119	+	t.Fatal(err)
		120	+	}
		121	+	owner, repo, ref, dir, err := parseGitHubAgentURL(u)
		122	+	if err != nil {
		123	+	t.Fatalf("parse %s: %v", tt.input, err)
		124	+	}
		125	+	if owner != tt.owner \|\| repo != tt.repo \|\| ref != tt.ref \|\| dir != tt.dir {
		126	+	t.Fatalf("parse %s = %q, %q, %q, %q", tt.input, owner, repo, ref, dir)
		127	+	}
		128	+	}
		129	+	}
		130	+
		131	+	func TestLoadRemoteZotfileDownloadsTemporaryGitHubArchive(t *testing.T) {
		132	+	var archive bytes.Buffer
		133	+	gz := gzip.NewWriter(&archive)
		134	+	tw := tar.NewWriter(gz)
		135	+	files := map[string]string{
		136	+	"agents-main/zot-maintenance/manifest.json": `{"zotfile":1,"name":"zot-maintenance"}`,
		137	+	"agents-main/zot-maintenance/AGENT.md": "Maintain zot.",
		138	+	}
		139	+	for name, content := range files {
		140	+	if err := tw.WriteHeader(&tar.Header{Name: name, Mode: 0o600, Size: int64(len(content))}); err != nil {
		141	+	t.Fatal(err)
		142	+	}
		143	+	if _, err := tw.Write([]byte(content)); err != nil {
		144	+	t.Fatal(err)
		145	+	}
		146	+	}
		147	+	if err := tw.Close(); err != nil {
		148	+	t.Fatal(err)
		149	+	}
		150	+	if err := gz.Close(); err != nil {
		151	+	t.Fatal(err)
		152	+	}
		153	+
		154	+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		155	+	w.Header().Set("Content-Type", "application/gzip")
		156	+	_, _ = w.Write(archive.Bytes())
		157	+	}))
		158	+	defer server.Close()
		159	+	oldArchiveURL := githubArchiveURL
		160	+	githubArchiveURL = func(_, _, _ string) string { return server.URL }
		161	+	t.Cleanup(func() { githubArchiveURL = oldArchiveURL })
		162	+
		163	+	u, _ := url.Parse("https://github.com/patriceckhart/agents/zot-maintenance")
		164	+	zf, cleanup, err := loadRemoteZotfile(u)
		165	+	if err != nil {
		166	+	t.Fatal(err)
		167	+	}
		168	+	if zf.Manifest.Name != "zot-maintenance" \|\| !zf.Temp {
		169	+	t.Fatalf("unexpected zotfile: %+v", zf)
		170	+	}
		171	+	root := filepath.Dir(filepath.Dir(zf.Dir))
		172	+	cleanup()
		173	+	if _, err := os.Stat(root); !os.IsNotExist(err) {
		174	+	t.Fatalf("temporary checkout was not removed: %v", err)
		175	+	}
		176	+	}
		177	+
103	func TestPermissionSummaryShowsDeniedScopes(t *testing.T) {	178		func TestPermissionSummaryShowsDeniedScopes(t *testing.T) {
104	got := permissionSummary(tools.PermissionSet{})	179		got := permissionSummary(tools.PermissionSet{})
105	if !strings.Contains(got, "fs read: none") \|\| !strings.Contains(got, "fs write: none") {	180		if !strings.Contains(got, "fs read: none") \|\| !strings.Contains(got, "fs write: none") {