What is discogs-mcp-nepomusic CLAUDE.md?

Project instructions for a Cloudflare Workers server that connects AI assistants to users’ Discogs music collections. Discogs is a music database and marketplace; the project uses its API and requires users to host their own copy.

Use it when developing, testing, formatting, or deploying this Discogs MCP server.

It gives the coding agent the project’s commands, structure, authentication approach, and recurring coding patterns, so changes fit the existing codebase.

How nepomusic/discogs-mcp-nepomusic configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to nepomusic/discogs-mcp-nepomusic. 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/nepomusic/discogs-mcp-nepomusic/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/nepomusic/discogs-mcp-nepomusic

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/nepomusic/discogs-mcp-nepomusic/claude-md/github.svg)](https://agentmods.dev/instructions/nepomusic/discogs-mcp-nepomusic/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/nepomusic/discogs-mcp-nepomusic/claude-md"><img src="https://agentmods.dev/badge/instructions/nepomusic/discogs-mcp-nepomusic/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/nepomusic/discogs-mcp-nepomusic/claude-md"><img src="https://agentmods.dev/badge/instructions/nepomusic/discogs-mcp-nepomusic/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,193 This file is loaded in full into every session.

When invoked 1,193 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 100% copy Near-identical to another mod 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.

Model	Per session	Once invoked
Fable 5.1	$0.01193	$0.01193
Opus 5.5	$0.00477	$0.00477
Sonnet 5.5	$0.00239	$0.00239
Haiku 4.5	$0.00119	$0.00119

Measured 2mo ago against content hash 60be3ac609f3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

discogs-mcp-nepomusic 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 2mo 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.

Origin

This is a copy

100% identical to discogs-mcp CLAUDE.md — 10 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.

CLAUDE.md · 85 lines

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

Read the full file on GitHub · 85 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.

2mo ago First seen · 85 lines · 1,193 tokens per session scan A 60be3ac609f3

Subscribe to this mod's changes

discogs-mcp-nepomusic CLAUDE.md is an instructions file published in the GitHub repository nepomusic/discogs-mcp-nepomusic (0 stars, last pushed 2mo ago), licensed MIT. It adds 1,193 tokens to every session, about $0.0048 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to discogs-mcp CLAUDE.md, differing in 10 lines, and is treated as a copy.

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discogs-mcp-nepomusic: Instructions file for Claude Code