supi: Instructions file for Claude Code

CLAUDE.md

supi CLAUDE.md is an instructions file for Claude Code from mrclrchtr/supi. It costs 2,710 tokens per session, scanned A, original, MIT.

Project instructions for SuPi, a collection of installable extensions for the pi coding agent. It explains the repository's workspace layout, documentation process, development status, and package conventions.

In plain words
What is it for?
Use it when developing SuPi extensions, reading its documentation, checking project status, or organizing packages in its pnpm workspace monorepo—a repository containing multiple related packages.
Why use it?
It gives contributors the project-specific rules they need before changing pi extensions, whose APIs should be checked in the repository documentation.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions .claude-plugin; mentions CLAUDE.md; mentions Codex.

This is mrclrchtr/supi's own configuration. It tells Claude Code how to work on supi itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything supi configures →

Reuse

Borrowing it

Nothing to install: this file belongs to mrclrchtr/supi. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/mrclrchtr/supi/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/mrclrchtr/supi

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Per session 2,710 This file is loaded in full into every session.
When invoked 2,710 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.02710 $0.02710
Opus 5.5 $0.01084 $0.01084
Sonnet 5.5 $0.00542 $0.00542
Haiku 4.5 $0.00271 $0.00271

Measured yesterday against content hash 39e1770fa3bb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

supi CLAUDE.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 yesterday.

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.

CLAUDE.md · 138 lines

How it starts

The opening of the file, as written. The whole thing — 138 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

Pi loads SuPi TypeScript extensions from the working tree; no build step. After edits, /reload or restart Pi.

Development status

SuPi is pre-release and API-unstable. Breaking changes to APIs, commands, config, and extension behavior are allowed when they improve design; require backwards compatibility only when the task explicitly asks.

Pi docs-first rule

  • Before changing or advising on Pi behavior, read the relevant installed Pi docs (README.md, docs/, examples/) and linked .md references. Start with installed Pi's docs/index.md; never assume APIs or conventions from memory.
  • For request payloads, prompt caching, compaction, and context hooks verified here, see docs/pi/context-architecture.md.

Documentation expectations

  • Start at docs/INDEX.md for repo docs; follow its maintenance rules when adding docs.
  • Docs target the Pi version declared in dependencies; omit version stamps, retain source references.
  • Add JSDoc for exported APIs, config surfaces, and non-obvious behavior (including complex internals), not trivial private code.

Package layout convention

  • For new packages or structural work, follow docs/conventions/package-layout.md for role-specific boundaries, layout, and source/test configs.
  • For tool packages, follow docs/conventions/tool-architecture.md for per-tool guidance, specs, execution, results, and rendering boundaries.

Commands

  • Prefer lower-noise *:ai scripts when available; plain variants are for prettier/interactive output.
  • Choose validation by impact, not file type. Use the smallest checks that cover the change and its affected consumers.
  • For localized code/test changes, run focused tests and affected package typechecks. For docs/specs/skills or automation-policy-only changes (e.g. Renovate grouping), use relevant content, syntax, or config validation instead of pnpm verify:ai.
  • Run pnpm verify:ai for workspace-wide impact: shared APIs or cross-package behavior, dependency/lockfile updates, packaging/publishing, or shared build/test configuration. Also run it when impact cannot be safely bounded or the user requests it.
  • Report checks run, failures, and validation skipped.

Read the full file on GitHub · 138 lines

Changes

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.

  1. yesterday Changed · +4 lines · +152 tokens per session 39e1770fa3bb
  2. 3d ago Changed · -13 lines · -875 tokens per session be2d4be167b0
  3. 7d ago Changed · -44 lines · -1,060 tokens per session eea32ac35300
  4. 16d ago Changed · -7 tokens per session 1f2d03750c33
  5. 1mo ago Changed · -1 tokens per session 28c7ef493e92
  6. 1mo ago Changed · -3 lines · -116 tokens per session 860c6d0c6cc1
  7. 1mo ago Changed · +28 tokens per session 4664e451b8da
  8. 2mo ago First seen · 194 lines · 4,589 tokens per session scan A c2402fcc2c31

Subscribe to this mod's changes

supi CLAUDE.md is an instructions file published in the GitHub repository mrclrchtr/supi (103 stars, last pushed today), licensed MIT. It adds 2,710 tokens to every session, about $0.0108 per session on Opus 5.5. 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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