Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/mattdevy/pi-extensions/agents-mdgit clone --depth 1 https://github.com/MattDevy/pi-extensionsWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00778 | $0.00778 |
| Opus 5 | $0.00389 | $0.00389 |
| Sonnet 5 | $0.00156 | $0.00156 |
| Haiku 4.5 | $0.00078 | $0.00078 |
Grade A, and why
pi-extensions AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.
pi-extensions
This is an npm workspaces monorepo. All Pi extensions live under packages/. Each package has its own AGENTS.md with package-specific conventions and directory structure.
Repository structure
packages/
pi-continuous-learning/ # Pi extension: continuous learning via instincts
src/ # TypeScript source + tests (*.test.ts alongside source)
docs/ # Package documentation (internals.md, specification.md)
AGENTS.md # Package-level conventions, directory structure, testing
CHANGELOG.md # Release history (managed by release-please)
pi-red-green/ # Pi extension: TDD enforcement (red-green-refactor)
src/ # TypeScript source + tests (*.test.ts alongside source)
CHANGELOG.md # Release history (managed by release-please)
pi-compass/ # Pi extension: codebase navigation (codemap + code tours)
src/ # TypeScript source + tests (*.test.ts alongside source)
CHANGELOG.md # Release history (managed by release-please)
pi-simplify/ # Pi extension: code simplification (/simplify command)
src/ # TypeScript source + tests (*.test.ts alongside source)
CHANGELOG.md # Release history (managed by release-please)
pi-code-review/ # Pi extension: automated language-aware code review
src/ # TypeScript source + tests (*.test.ts alongside source)
CHANGELOG.md # Release history (managed by release-please)
pi-blueprint/ # Pi extension: multi-session planning with dependency tracking
src/ # TypeScript source + tests (*.test.ts alongside source)
CHANGELOG.md # Release history (managed by release-please)
Commands (run from repo root)
After ANY code change, run the full check:
npm run check
Individual commands:
npm test # run all package tests
npm test -w packages/pi-continuous-learning -- src/foo.test.ts # single file
npm test -w packages/pi-continuous-learning -- -t "pattern" # by name pattern
npm run typecheck # type-check all packages
npm run lint # ESLint on all packages
npm run build # compile all packages to dist/
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 73 lines · 778 tokens per session scan A c8398e21b89d
pi-extensions AGENTS.md is an instructions file published in the GitHub repository MattDevy/pi-extensions (130 stars, last pushed 8d ago), licensed MIT. It adds 778 tokens to every session, about $0.0039 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other instructions, from other repositories
pi-extensions AGENTS.md
Instructions for narumiruna/pi-extensions, covering repository guidelines, documentation and communication, repository structure, commands and tooling and dependency safety.
kendex AGENTS.md
AGENTS.md instructions for vanillagreencom/kendex, covering kendex and code review rules.
kendex copilot-instructions.md
Copilot instructions for vanillagreencom/kendex, covering kendex, code review calibration, what to raise, what not to raise and reply contract (context for reading threads).
kendex skills-and-agents.instructions.md
Instructions for vanillagreencom/kendex, a project described as: Package manager for agents, skills, hooks, and extensions. Author once, install on every harness. QOL features included.
kendex tests.instructions.md
Instructions for vanillagreencom/kendex, a project described as: Package manager for agents, skills, hooks, and extensions. Author once, install on every harness. QOL features included.
kendex crates.instructions.md
Instructions for vanillagreencom/kendex: Rust workspace; repo convention runs cargo test and cargo clippy. Code that writes kendex.toml or kendex.settings.toml must never reformat content inside TOML string values — flag any line-oriented pass over TOML text that is not string-state-aware; this has corrupted user…