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/donnatto/discogs-mcp/claude-mdgit clone --depth 1 https://github.com/donnatto/discogs-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/donnatto/discogs-mcp/claude-md)<a href="https://agentmods.dev/instructions/donnatto/discogs-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/donnatto/discogs-mcp/claude-md.svg" alt="Measured on agentmods" 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 | $0.01193 | $0.01193 |
| Opus 5 | $0.00596 | $0.00596 |
| Sonnet 5 | $0.00239 | $0.00239 |
| Haiku 4.5 | $0.00119 | $0.00119 |
Grade A, and why
discogs-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 5d 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 discogs-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.
How it starts
The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Project
Discogs MCP — a Cloudflare Workers MCP server that lets AI assistants interact with users' Discogs music collections. Implements OAuth 1.0a authentication against the Discogs API, intelligent search with mood mapping, and context-aware recommendations. Deployed at discogs-mcp.com (locked to maintainer; users must self-host).
Commands
npm run dev # Local dev server on port 8787
npm run build # Dry-run build (wrangler deploy --dry-run)
npm test # Vitest with Cloudflare Workers pool
npm test -- path/to/file # Single test file
npm test -- --watch # Watch mode
npm run lint # ESLint (must pass before every commit)
npm run format # Prettier --write
npm run format:check # Prettier --check
npm run deploy # Deploy to dev environment
npm run deploy:prod # Deploy to production
npm run cf-typegen # Regenerate Cloudflare Workers types
Architecture
Entry point: src/index-oauth.ts — routes requests through OAuthProvider which handles OAuth endpoints, then delegates MCP traffic to the server created by src/mcp/server.ts.
src/
├── auth/ # OAuth 1.0a flow (Discogs) + JWT session tokens
├── clients/ # DiscogsClient (API calls + retry) → CachedDiscogsClient (KV cache wrapper)
├── mcp/
│ ├── server.ts # MCP server factory — registers all tools, resources, prompts
│ ├── tools/
│ │ ├── public.ts # Unauthenticated: ping, server_info, auth_status
│ │ └── authenticated.ts # Requires auth: search_collection, search_discogs, get_release, etc.
│ ├── resources/ # MCP resource definitions
│ └── prompts/ # MCP prompt templates
├── rate-limiter/ # Durable Object for coordinated rate limiting across Workers
├── types/ # Shared TypeScript types
├── utils/
│ ├── moodMapping.ts # Maps emotional descriptors ("mellow", "Sunday vibes") → genres/styles
│ ├── searchRanking.ts # Deduplication, scoring, ranking of search results
│ ├── searchQueryParser.ts # Classifies queries (mood, specific, genre, etc.)
│ ├── cache.ts # KV-based caching utilities
│ └── kvLogger.ts # Structured logging to KV
└── marketing-page.ts # HTML landing page
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.
- 5d ago First seen · 85 lines · 1,193 tokens per session scan A 60be3ac609f3
discogs-mcp CLAUDE.md is an instructions file published in the GitHub repository donnatto/discogs-mcp (0 stars, last pushed 1mo ago), licensed MIT. It adds 1,193 tokens to every session, about $0.0060 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to discogs-mcp CLAUDE.md, differing in 0 lines, and is treated as a copy.
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