Borrowing it
Nothing to install: this file belongs to minipuft/claude-prompts-mcp. 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/minipuft/claude-prompts-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/minipuft/claude-prompts-mcpWrote 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/instructions/minipuft/claude-prompts-mcp/claude-md)<a href="https://agentmods.dev/instructions/minipuft/claude-prompts-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/minipuft/claude-prompts-mcp/claude-md/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/instructions/minipuft/claude-prompts-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/minipuft/claude-prompts-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.07915 | $0.07915 |
| Opus 5 | $0.03957 | $0.03957 |
| Sonnet 5 | $0.01583 | $0.01583 |
| Haiku 4.5 | $0.00792 | $0.00792 |
Grade A, and why
claude-prompts-mcp 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 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 — 299 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Claude Prompts MCP -- Operator Handbook
Source of Truth: server/dist/**. Confirm behavior there before describing or modifying functionality.
Core Principles
- MCP Tooling Only -- Prompts, templates, chains flow through MCP tools. Manual edits under
server/prompts/**forbidden. - Contract ownership -- Hand-written schemas under
src/mcp/tools/schemas/own runtime validation;tooling/contracts/*.jsonown descriptions and parameter metadata generated intosrc/mcp/contracts/schemas/_generated/. Runnpm run generate:contracts, never edit_generated/. - Transport Parity -- Runtime changes must work in STDIO and Streamable HTTP. The two differ in instance lifetime, and that difference is load-bearing: STDIO pins one
McpServerper connection, while HTTP builds a fresh one per request. A change that mutates a registered instance passes STDIO and silently no-ops over HTTP. HTTP+SSE was removed in the SDK v2 upgrade. - Docs/Code Lockstep -- Update relevant doc in
docs/when behavior changes. - Validation Discipline --
npm run typecheck && npm run lint:ratchet && npm run typecheck:tests:ratchet && npm run test:allminimum. Addvalidate:archfor module boundaries.typecheck:tests:ratchetis not optional:tsconfig.jsonexcludestests/, sotypecheckis blind to every call site a signature change breaks, andvalidate:all-- which CI runs whole -- runs the ratchet second. Omitting it locally means CI fails on work that passed every gate you ran.test:all, nottest:ci:test:ciis an alias fortest:unitand runs neithertests/integrationnortests/e2e, while CI runs both as separate jobs -- so its name promises the opposite of what it does. Measured 2026-08-27: a default-deny control landed with the unit suite green, and 20 integration plus 17 e2e failures went unseen for five commits because every local check stopped attest:ci.pre-pushruns integration and is what finally caught it;test:allis how you find out before then.
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 Changed · +3 lines · +91 tokens per session 0383fa255622
- 3d ago Changed · -1 tokens per session c0f94c1dae80
- 7d ago Changed · -3 lines · -205 tokens per session 123bc93db751
- 11d ago First seen · 299 lines · 8,030 tokens per session scan A d50a2f669528
claude-prompts-mcp CLAUDE.md is an instructions file published in the GitHub repository minipuft/claude-prompts-mcp (187 stars, last pushed today), licensed MIT. It adds 7,915 tokens to every session, about $0.0396 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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