Borrowing it
Nothing to install: this file belongs to mikeysrecipes/package-registry-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/mikeysrecipes/package-registry-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/mikeysrecipes/package-registry-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/mikeysrecipes/package-registry-mcp/claude-md)<a href="https://agentmods.dev/instructions/mikeysrecipes/package-registry-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/mikeysrecipes/package-registry-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/mikeysrecipes/package-registry-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/mikeysrecipes/package-registry-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 | $0.00404 | $0.00404 |
| Opus 5 | $0.00202 | $0.00202 |
| Sonnet 5 | $0.00081 | $0.00081 |
| Haiku 4.5 | $0.00040 | $0.00040 |
Grade A, and why
package-registry-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 9d 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.
This is a copy
100% identical to package-registry-mcp CLAUDE.md — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Project Overview
This is a Model Context Protocol (MCP) server that enables AI assistants to search package registries (NPM, Cargo, NuGet) and retrieve up-to-date package information. The server exposes tools for searching packages and getting detailed package metadata.
Common Commands
# Install dependencies
bun install
# Build the server (outputs to dist/)
bun run build
# Format code with Prettier
bun run format
# Test individual MCP tools
bun tool <tool-name> <json-arguments>
# Examples:
# bun tool search-npm-packages '{"query": "react"}'
# bun tool get-npm-package-details '{"name": "react"}'
# bun tool list-npm-package-versions '{"name": "react", "limit": 50}'
Architecture
- Runtime: Uses Bun as the primary runtime and build tool
- Entry point:
src/index.ts(currently contains placeholder code) - Build target: Node.js compatible output in
dist/ - Dependencies:
@modelcontextprotocol/sdkfor MCP server implementationzodfor schema validation
- Package manager: Yarn (specified in packageManager field)
TypeScript Configuration
The project uses strict TypeScript with modern ESNext features and bundler module resolution. Key settings:
- Strict mode enabled with additional safety checks
- Bundle-compatible module resolution
- ESNext target for latest JavaScript features
Code Style Guidelines
- Separate imports of third party packages and local files
- Sort import in alphabetical order, based on the package name or import path. Separate packages and local file imports with an empty line.
Development Workflow
- Run bun format and bun typecheck when you've finished making 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.
- 9d ago First seen · 61 lines · 404 tokens per session scan A 9aabd6309aee
package-registry-mcp CLAUDE.md is an instructions file published in the GitHub repository mikeysrecipes/package-registry-mcp (0 stars, last pushed 1y ago), licensed MIT. It adds 404 tokens to every session, about $0.0020 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to package-registry-mcp CLAUDE.md, differing in 0 lines, and is treated as a copy.
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