feat(skills): add verify for revocations and eyebrow drift checks

[alexverify]

Summary

Adds openclaude skills verify. The command has two independent parts. Each sentence below names the code path it describes.

Revocation check (OpenClaude only). verify walks the project's .openclaude/skills and the user skills directory. Skills from plugins, MCP servers, or --add-dir directories are outside it. For each skill it reads id, version, and sha256 from skill.json as written on disk and matches them against revocations.json with the reader and match rule from #2187. The digest is the registry pin recorded at install, not a hash of the current files, so this part says nothing about the contents on disk and trusts skill.json as it finds it. A skill whose sidecar has no id and no digest is listed as skipped. A local install that copied a sidecar keeps that file's id and digest and is matched like a registry install. A list that cannot be read fails the command, the same as an install. Exit 1 when a skill is revoked.

eyebrow handoff (optional, inert without the binary). When an executable named eyebrow is on PATH, or OPENCLAUDE_EYEBROW_BIN names one, and the project has a lockfile, verify spawns eyebrow verify --path . --lockfile eyebrowlock.json in the project directory with inherited stdio, prints the binary path it ran, and takes the child's exit code unless a skill was revoked. --lockfile selects another lockfile and --policy <file> adds --ci --policy <file>. verify does not check the eyebrow version. Without eyebrow or without a lockfile it prints one hint line and exits with the revocation result. No new dependency, no network call at startup, no download, no content hashing in the client.

docs/skills.md (#2211) already tells users to run eyebrow by hand after install. This makes that one command. If the handoff is not wanted, the revocation check stands on its own and I can drop the second half.

Changes

• src/cli/handlers/skillsVerify.ts: the handler, the skill walk (nested and symlinked skill directories, skills nested below a skill as the loader finds them, each real directory visited once across both roots), the eyebrow lookup (first executable named eyebrow on PATH, eyebrow.exe on Windows), and a spawn seam for tests.
• src/cli/handlers/skillsInstall.ts: exports resolveRegistrySource, resolveRevocationsSource, readRevocations, and revocationApplies; readRegistryEntries now uses the shared resolver. Install behavior is unchanged; the 43 existing install tests pass.
• src/cli/handlers/skillsCli.ts, src/main.tsx: verify subcommand with --registry, --lockfile, --policy.
• docs/skills.md: a "Verify installed skills" section, one line in the command list, one line in the eyebrow section.

Testing

• src/cli/handlers/skillsVerify.test.ts, 20 tests: ok, revoked by id and version, revoked by digest, another version untouched, hand-made skill skipped, copied sidecar on a local install matched, symlinked skill directory found, a skill nested below another skill found, a symlink back to the root or an ancestor reports the skill once, the same directory linked from both roots reports the skill once, malformed list fails closed, absent list reads as empty, eyebrow args and cwd, --policy args, revoked wins over a clean eyebrow run, missing lockfile skips the run, PATH lookup, a non-executable file earlier on PATH is skipped, a real shell script binary returns exit 3, a missing binary is reported.
• skills.test.ts 43 pass, cli.skills.test.ts 11 pass, tsc --noEmit clean, knip exit 0, bun run build ok. Branch is on current main.
• Live runs of the built CLI, HOME pointed at a scratch config dir. Output is verbatim except that scratch directories are shortened to /tmp/oc-live, /opt/eyebrow-0.4.6, and /opt/eyebrow-0.4.1. The project holds ci-fix from the registry and a hand-written hand-made.

$ openclaude skills verify    # eyebrow 0.4.6 on PATH
Found 2 installed skills. Revocation list: https://raw.githubusercontent.com/Gitlawb/openclaude-skills/main/revocations.json
  ci-fix     ok
  hand-made  skipped (no registry metadata)
Running /opt/eyebrow-0.4.6/eyebrow verify --path . --lockfile eyebrowlock.json in /tmp/oc-live
verify: DRIFT — 2 change(s) detected:
  [added] hand-made (b784579737cf0e87)
  [content_changed] ci-fix (d8e13e7364b91067)
    old: sha256-f4ccfe1dabe7c2f191e8cc2f88499934bcf2f043e380bd39ec06c76642a6ff89
    new: sha256-dae7838520440f621296b4ba95fdef4e0651104a71d32045b8518e03627dc165
exit 1

$ openclaude skills verify    # no eyebrow on PATH
Found 2 installed skills. Revocation list: https://raw.githubusercontent.com/Gitlawb/openclaude-skills/main/revocations.json
  ci-fix     ok
  hand-made  skipped (no registry metadata)
eyebrow not found; install it to check skill contents against a lockfile (see docs/skills.md).
exit 0

$ openclaude skills verify --registry ./revoked-registry
Found 2 installed skills. Revocation list: /tmp/oc-live/revoked-registry/revocations.json
  ci-fix     REVOKED (test revocation)
  hand-made  skipped (no registry metadata)
1 revoked skill installed. Remove with "openclaude skills remove <name>".
Running /opt/eyebrow-0.4.6/eyebrow verify --path . --lockfile eyebrowlock.json in /tmp/oc-live
verify: DRIFT — 2 change(s) detected:
  [added] hand-made (b784579737cf0e87)
  [content_changed] ci-fix (d8e13e7364b91067)
    old: sha256-f4ccfe1dabe7c2f191e8cc2f88499934bcf2f043e380bd39ec06c76642a6ff89
    new: sha256-dae7838520440f621296b4ba95fdef4e0651104a71d32045b8518e03627dc165
exit 1

$ openclaude skills verify --policy eyebrow.policy.json    # after a curl line was added to ci-fix
Found 2 installed skills. Revocation list: https://raw.githubusercontent.com/Gitlawb/openclaude-skills/main/revocations.json
  ci-fix     ok
  hand-made  skipped (no registry metadata)
Running /opt/eyebrow-0.4.6/eyebrow verify --path . --lockfile eyebrowlock.json --ci --policy eyebrow.policy.json in /tmp/oc-live
verify: DRIFT — 1 change(s) detected:
  [content_changed] ci-fix (d8e13e7364b91067)
    old: sha256-dae7838520440f621296b4ba95fdef4e0651104a71d32045b8518e03627dc165
    new: sha256-959e1e0d5ca9192113d2f1a4b0226924154b6ae44740fc37e6473404e8aeda4d
policy: capability expansion — ci-fix gained network: example.com (d8e13e7364b91067)
exit 1

$ openclaude skills verify    # eyebrow 0.4.1 on PATH, no OpenClaude discovery
Found 2 installed skills. Revocation list: https://raw.githubusercontent.com/Gitlawb/openclaude-skills/main/revocations.json
  ci-fix     ok
  hand-made  skipped (no registry metadata)
Running /opt/eyebrow-0.4.1/eyebrow verify --path . --lockfile eyebrowlock.json in /tmp/oc-live
verify: DRIFT — 2 change(s) detected:
  [removed] hand-made (b784579737cf0e87)
  [removed] ci-fix (d8e13e7364b91067)
exit 1

$ openclaude skills verify    # no lockfile
Found 2 installed skills. Revocation list: https://raw.githubusercontent.com/Gitlawb/openclaude-skills/main/revocations.json
  ci-fix     ok
  hand-made  skipped (no registry metadata)
eyebrow found but no lockfile at eyebrowlock.json. Run "eyebrow scan --path . --lockfile eyebrowlock.json" in /tmp/oc-live first.
exit 0

Two things the live runs caught and the change now handles: eyebrow derives an artifact id from the path it scans under, so the handoff passes --path . from inside the project, the form the guide uses for scan; an absolute path reported every skill as added plus removed. And an eyebrow older than 0.4.4 has no OpenClaude discovery and reports every locked skill as removed, so the output names the binary that ran and the guide says to use 0.4.6 or newer.

Summary by CodeRabbit

• New Features

  • Added the openclaude skills verify command.
  • Checks installed skills against registry revocation lists and reports revoked, valid, or skipped skills.
  • Runs content verification with Eyebrow when available and a lockfile is present.
  • Supports custom registries, lockfiles, and verification policies.
  • Preserves revoked-skill and verification failure results through exit codes.

• Documentation

  • Updated the skills guide with command usage and automatic Eyebrow verification details.

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🔇 Additional comments (4)

src/cli/handlers/skillsVerify.ts (1)

196-196: LGTM!

Also applies to: 201-201, 203-203, 206-209

src/utils/fsOperations.ts (2)

437-439: LGTM!

---

37-38: 🗄️ Data Integrity & Integration

No missing FsOperations.access() implementation exists.

NodeFsOperations defines access(). Every setFsImplementation() override spreads an existing complete implementation, including the Partial<FsOperations> test helper. No missing-method path exists.

src/cli/handlers/skillsVerify.test.ts (1)

97-97: LGTM!

Also applies to: 99-109, 113-113, 243-243, 271-271, 285-285

---

📝 Walkthrough

Walkthrough

Adds openclaude skills verify. The command checks installed skills against registry revocations and optionally runs eyebrow against a lockfile. It includes CLI options, registry helper exports, filesystem support, documentation, and handler tests.

Changes

Skills verification

Layer / File(s)	Summary
Registry and revocation contracts src/cli/handlers/skillsInstall.ts	Exports revocation types and helpers. Centralizes registry source resolution.
Verification discovery and execution src/cli/handlers/skillsVerify.ts, src/utils/fsOperations.ts	Discovers project and user skills, matches revocations, reports statuses, locates eyebrow, and propagates verification exit codes. Adds asynchronous filesystem access support.
CLI command and documentation src/main.tsx, src/cli/handlers/skillsCli.ts, src/cli/handlers/skills.ts, docs/skills.md	Registers skills verify, parses registry, lockfile, and policy options, exports the handler, and documents command behavior.
Verification behavior tests src/cli/handlers/skillsVerify.test.ts	Tests skill discovery, revocation matching, malformed lists, eyebrow execution, option forwarding, and exit codes.

Estimated code review effort: 3 (Moderate) | ~25 minutes

Merge Risk: ⚪ Minimal · up to c5b47

The command adds skill revocation verification and optional eyebrow lockfile verification. No current merge-blocking risk is identified.

🚥 Pre-merge checks | ✅ 6 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 37.93% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 29 functions across 7 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (6 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title is concise, scoped to skills, and accurately describes the new verification command and its revocation and eyebrow checks.
Description check	✅ Passed	The description clearly covers the change, user behavior, implementation scope, testing, command results, and known limitations. It does not include separate Impact or Notes headings, but the required…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Risk Surface Disclosed	✅ Passed	The PR discloses the relevant risk surface. The description identifies skill scope, registry revocation-list access, the optional eyebrow executable selected from PATH or OPENCLAUDE_EYEBROW_BIN,…
No Hidden Policy Change	✅ Passed	No hidden policy change is present. The feature adds an explicit skills verify command, and the PR description and docs/skills.md state its policy choices: remote revocation-list lookup, trust in …

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[greptile-apps]

Greptile Summary

Adds openclaude skills verify for checking installed project and user skills against registry revocations, with an optional handoff to eyebrow for lockfile drift checking.

• Shares registry and revocation resolution logic with skill installation.
• Recursively inventories installed skills and reports matched revocations.
• Adds CLI options for registry, lockfile, and eyebrow policy selection.
• Documents the verification workflow and adds focused handler tests.

Confidence Score: 3/5

The PR should not merge until nested installed skills are checked and eyebrow discovery reliably selects and launches runnable binaries.

The new verifier can silently omit a revoked nested skill, while its binary lookup can reject otherwise valid eyebrow installations; cross-root aliases also produce duplicate verification results.

Files Needing Attention: src/cli/handlers/skillsVerify.ts

Important Files Changed

Filename	Overview
src/cli/handlers/skillsVerify.ts	Implements verification and eyebrow handoff, but misses nested skills, has incompatible executable lookup semantics, and does not deduplicate across roots.
src/cli/handlers/skillsInstall.ts	Exposes existing registry and revocation helpers while preserving the prior installation source-resolution behavior.
src/cli/handlers/skillsCli.ts	Adds verify argument parsing and dispatch for registry, lockfile, and policy options.
src/main.tsx	Registers the new Commander subcommand and forwards its options to the handler.
src/cli/handlers/skillsVerify.test.ts	Covers core revocation and eyebrow behavior but omits nested-under-skill, cross-root alias, executable-permission, and Windows command-script cases.
docs/skills.md	Documents the verification scope, trust model, eyebrow integration, and exit-code behavior.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
  A[openclaude skills verify] --> B[Resolve project and user skill roots]
  B --> C[Discover installed skills]
  C --> D[Read registry revocations]
  D --> E{Any revocation matches?}
  E -->|Yes| F[Set exit code 1]
  E -->|No| G[Keep successful revocation result]
  F --> H{Eyebrow and lockfile available?}
  G --> H
  H -->|No| I[Print setup hint and return]
  H -->|Yes| J[Run eyebrow verify in project directory]
  J --> K{Revoked skill found?}
  K -->|Yes| L[Preserve exit code 1]
  K -->|No| M[Use eyebrow exit code]

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Inline comments:
In `@src/cli/handlers/skillsVerify.test.ts`:
- Around line 222-225: Add a symlink-cycle regression case to the test around
skillsVerifyHandler and findInstalledSkills by linking an ancestor or the
project skills root back into traversal. Assert verification completes
successfully and reports the actual skill exactly once, while preserving the
existing acyclic symlink coverage.

In `@src/cli/handlers/skillsVerify.ts`:
- Line 201: Update findEyebrowBinary’s PATH candidate filtering to require
platform-aware executability, not merely stat(candidate).isFile(), so
non-executable files are skipped and later usable eyebrow binaries are selected.
Add a focused regression test covering a non-executable earlier PATH entry
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src/cli/handlers/skillsVerify.ts

[warning] 7-7: Importing child_process exposes a command-execution surface; ensure any command/argument built from input is validated, and prefer execFile/spawn with an argument array over exec.
Context: import { spawn } from 'child_process'
Note: [CWE-78] Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').

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src/cli/handlers/skillsInstall.ts (1)

48-48: LGTM!

Also applies to: 170-193, 222-222, 292-292, 324-324, 404-404

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Inline comments:
In `@src/cli/handlers/skillsVerify.test.ts`:
- Around line 253-254: Update the symlink-based test cases around symlinkSync in
skillsVerify tests to detect unavailable directory symlink support and skip
those cases before setup runs. Preserve the existing test behavior when symlinks
can be created.

In `@src/cli/handlers/skillsVerify.ts`:
- Around line 205-208: Update the executable check in the skills verification
flow to use the active filesystem implementation returned by
getFsImplementation() rather than native fs/promises.access(). If needed, add
access to the FsOperations interface and its implementations, preserving the
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src/cli/handlers/skillsVerify.ts (1)

113-119: LGTM!

Also applies to: 121-124, 128-141, 160-164, 196-204, 209-213, 217-219, 226-234, 264-268

src/cli/handlers/skillsVerify.test.ts (1)

235-248: LGTM!

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Inline comments:
In `@src/cli/handlers/skillsVerify.test.ts`:
- Line 244: Update the symlink-related tests around canSymlinkDirectories,
including the symlink, cycle, and duplicate-target cases, to use Bun’s explicit
skip mechanism when symlink creation is unavailable instead of returning from
the callbacks. Provide a clear skip reason so unsupported environments are
reported as skipped rather than passed.

In `@src/cli/handlers/skillsVerify.ts`:
- Line 205: Update isExecutableFile and the FsOperations seam to check effective
X_OK permission for the current process before accepting a PATH candidate,
rather than relying only on stats.mode execute bits. Ensure findEyebrowBinary
skips candidates that fail this check so defaultEyebrowRunner can try later
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[jatmn]

@kevincodex1 lgtm

[kevincodex1]

lgtm