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3b2b9abffc
Breaking change: Pi skills must now be named SKILL.md inside a directory, matching Codex CLI format. Previously any *.md file was treated as a skill. Migrate by renaming ~/.pi/agent/skills/foo.md to ~/.pi/agent/skills/foo/SKILL.md
98 lines
2.6 KiB
Markdown
98 lines
2.6 KiB
Markdown
# Skills
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Skills are instruction files that the agent loads on-demand for specific tasks.
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## Skill Locations
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Skills are discovered from these locations (in order of priority, later wins on name collision):
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1. `~/.codex/skills/**/SKILL.md` (Codex CLI user skills, recursive)
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2. `~/.claude/skills/*/SKILL.md` (Claude Code user skills)
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3. `<cwd>/.claude/skills/*/SKILL.md` (Claude Code project skills)
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4. `~/.pi/agent/skills/**/SKILL.md` (Pi user skills, recursive)
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5. `<cwd>/.pi/skills/**/SKILL.md` (Pi project skills, recursive)
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Skill names and descriptions are listed in the system prompt. When a task matches a skill's description, the agent uses the `read` tool to load it.
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## Creating Skills
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A skill is a markdown file with YAML frontmatter containing a `description` field:
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```markdown
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---
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description: Extract text and tables from PDF files
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---
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# PDF Processing Instructions
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1. Use `pdftotext` to extract plain text
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2. For tables, use `tabula-py` or similar
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3. Always verify extraction quality
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Scripts are in: {baseDir}/scripts/
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```
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### Frontmatter Fields
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| Field | Required | Description |
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|-------|----------|-------------|
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| `description` | Yes | Short description for skill selection |
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| `name` | No | Override skill name (defaults to filename or directory name) |
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The parser only supports single-line `key: value` syntax. Multiline YAML blocks are not supported.
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### Variables
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Use `{baseDir}` as a placeholder for the skill's directory. The agent is told each skill's base directory and will substitute it when following the instructions.
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### Subdirectories
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Pi and Codex skills in subdirectories use colon-separated names:
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- `~/.pi/agent/skills/db/migrate/SKILL.md` → `db:migrate`
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- `<cwd>/.pi/skills/aws/s3/upload/SKILL.md` → `aws:s3:upload`
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## Claude Code Compatibility
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Pi reads Claude Code skills from `~/.claude/skills/*/SKILL.md`. The `allowed-tools` and `model` frontmatter fields are ignored since Pi cannot enforce them.
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## Codex CLI Compatibility
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Pi reads Codex CLI skills from `~/.codex/skills/`. Unlike Claude Code skills (one level deep), Codex skills are scanned recursively, matching Codex CLI's behavior. Hidden files/directories (starting with `.`) and symlinks are skipped.
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## Disabling Skills
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CLI flag:
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```bash
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pi --no-skills
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```
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Or in `~/.pi/agent/settings.json`:
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```json
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{
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"skills": {
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"enabled": false
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}
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}
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```
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## Example
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```markdown
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---
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description: Perform code review with security and performance analysis
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---
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# Code Review
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Analyze:
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## Security
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- Input validation
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- SQL injection
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- XSS vulnerabilities
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## Performance
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- Algorithm complexity
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- Memory usage
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- Query efficiency
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```
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