alex-clawd 418afd29e7 feat: Skills Repository — registry, cache, CLI, and SDK integration (#5867) ...

* feat: add Skills Repository — registry, cache, CLI, and SDK integration

Adds a Skills Repository feature allowing users to publish, install,
and use skills from the CrewAI registry with @org/skill-name refs.

## What's New

### SDK (lib/crewai/)
- SkillFrontmatter: added optional 'version' field (backward compatible)
- SkillCacheManager: manages ~/.crewai/skills/{org}/{name}/ with
  .crewai_meta.json tracking, path-traversal-safe tar extraction
- SkillRegistry: parse @org/skill-name refs, local-first resolution
  (./skills/ > cache > download), interactive prompt on first use,
  CI-mode guard (CREWAI_NONINTERACTIVE/CI env vars)
- Agent.skills and Crew.skills widened to accept str refs (@org/name)
- set_skills() resolves registry refs with org-prefixed dedup keys
- New events: SkillDownloadStartedEvent, SkillDownloadCompletedEvent

### CLI (lib/cli/)
- crewai skill create <name> — context-aware (project vs standalone)
- crewai skill install @org/name — downloads to ./skills/ or cache
- crewai skill publish — ZIP + upload to org registry
- crewai skill list — show installed skills

### PlusAPI (lib/crewai-core/)
- Added SKILLS_RESOURCE, get_skill(), publish_skill(), list_skills()

### Scaffolding
- crew and flow templates now include skills/ directory

### Tests
- 91 SDK skill tests + 15 CLI skill tests, all passing

* fix: address all CI failures and CodeRabbit review comments

Lint:
- Remove unused imports (click, pytest, json)
- Replace try-except-pass with logging (S110)
- Fix unprotected zipfile.extractall (S202)

Security:
- Path traversal: startswith → is_relative_to for tar extraction
- Add path traversal protection to ZIP extraction via _safe_extract_zip
- Both cache.py and CLI main.py hardened

Type checker:
- Fix import path: crewai.events.event_bus (not crewai_event_bus)
- Remove unused type: ignore comments
- Fix type mismatches in set_skills() variable types

Code quality:
- Fix f-string interpolation in SkillNotCachedError
- Use ValidationError instead of Exception in test

* style: ruff format + autofix remaining lint errors

* refactor: reuse SDK parser and SkillCacheManager in CLI

- _parse_frontmatter() now delegates to crewai.skills.parser.parse_frontmatter
  when available, with a minimal fallback for CLI-only installs
- install() global cache path now reuses SkillCacheManager.store() instead
  of duplicating metadata writing logic

* refactor: add _print_current_organization to SkillCommand (matches ToolCommand pattern)

* fix: write .crewai_meta.json in fallback install path

CodeRabbit caught that the ImportError fallback in install() didn't write
cache metadata, making skills invisible to 'crewai skill list'.

* fix: tighten @org/name ref validation to prevent path traversal

Reject refs with multiple slashes (@org/a/b), dot segments (@../skill),
or leading dots in org/name. Applied to both CLI install() and SDK
parse_registry_ref() so the contract is enforced consistently.

* fix: update test assertions to match tightened error messages

* fix: align OSS client with AMP API contract

- download_skill(): fetch download_url (presigned URL) instead of
  expecting inline base64. Falls back to 'file' field for compat.
- Read 'latest_version' field, fall back to 'version'
- Same fixes applied to CLI install() command

* fix: publish as tar.gz (matches AMP content_type validation) + add zip fallback to SDK cache

CLI publish:
- _build_skill_zip → _build_skill_tarball (tar.gz format)
- Content type: application/x-gzip (matches SkillVersion validation)

SDK cache:
- store() now tries tar.gz first, falls back to zip extraction
- Added _safe_extract_zip for path-traversal-safe zip handling
- Both formats work for download/install regardless of server format

---------

Co-authored-by: João Moura <joaomdmoura@gmail.com>

2026-05-20 14:38:25 -03:00

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