Borrowing it
Nothing to install: this file belongs to IgorWarzocha/howaboua-pi-stuff. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/IgorWarzocha/howaboua-pi-stuff/main/.pi/skills/pi-stuff-tool-contracts/SKILL.mdgit clone --depth 1 https://github.com/IgorWarzocha/howaboua-pi-stuffWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/igorwarzocha/howaboua-pi-stuff/pi-stuff-tool-contracts)<a href="https://agentmods.dev/skills/igorwarzocha/howaboua-pi-stuff/pi-stuff-tool-contracts"><img src="https://agentmods.dev/badge/skills/igorwarzocha/howaboua-pi-stuff/pi-stuff-tool-contracts/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/igorwarzocha/howaboua-pi-stuff/pi-stuff-tool-contracts"><img src="https://agentmods.dev/badge/skills/igorwarzocha/howaboua-pi-stuff/pi-stuff-tool-contracts.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What 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 5.1 | $0.00027 | $0.00257 |
| Opus 5 | $0.00014 | $0.00129 |
| Sonnet 5 | $0.00005 | $0.00051 |
| Haiku 4.5 | $0.00003 | $0.00026 |
Grade A, and why
pi-stuff-tool-contracts 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 10d 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.
What it actually says
Discover and load applicable general agent tool design guidance before tool work. Load prompt caching guidance too when the active tool vector or system-prompt metadata changes.
Use scripts/tool-token-lines.mjs as this repo's preliminary migration and copy-cost probe. If its dependency is absent, install it once:
(cd .pi/skills/pi-stuff-tool-contracts/scripts && bun install --frozen-lockfile --ignore-scripts)
node .pi/skills/pi-stuff-tool-contracts/scripts/tool-token-lines.mjs <extension-file-or-directory>
Add --json for machine-readable output. The helper rejects known obsolete TypeBox, Pi package-scope, and removed custom-tool API markers before reporting an o200k token proxy over detected source lines.
The proxy is not the emitted schema or prompt payload. It can miss dynamic strings, imported schemas, conditional modes, and provider serialization. Use it to find likely duplication, then inspect the final registered schemas, prompt metadata, system-prompt additions, and model-visible results for each active mode. Run the owning package's direct check after changes.
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 10d ago First seen · 18 lines · 27 tokens per session scan A 0e94ef806be2
pi-stuff-tool-contracts is a skill published in the GitHub repository IgorWarzocha/howaboua-pi-stuff (359 stars, last pushed yesterday), licensed MIT. It adds 27 tokens to every session and 257 once invoked, about $0.0001 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.
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