Borrowing it
Nothing to install: this file belongs to anjor/coinmarket-mcp-server. 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/anjor/coinmarket-mcp-server/main/CLAUDE.mdgit clone --depth 1 https://github.com/anjor/coinmarket-mcp-serverWrote 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/anjor/coinmarket-mcp-server/claude-md)<a href="https://agentmods.dev/instructions/anjor/coinmarket-mcp-server/claude-md"><img src="https://agentmods.dev/badge/instructions/anjor/coinmarket-mcp-server/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/anjor/coinmarket-mcp-server/claude-md"><img src="https://agentmods.dev/badge/instructions/anjor/coinmarket-mcp-server/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 | $0.00524 | $0.00524 |
| Opus 5 | $0.00262 | $0.00262 |
| Sonnet 5 | $0.00105 | $0.00105 |
| Haiku 4.5 | $0.00052 | $0.00052 |
Grade C, and why
coinmarket-mcp-server CLAUDE.md scanned grade C with 2 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 11d 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.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
curl -LsSf https://astral.sh/uv/install.sh | sh Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -LsSf https://astral.sh/uv/install.sh | sh Copies of this mod
1 near-identical copy found in the catalogue:
- coinmarket-mcp-server CLAUDE.md — 100% identical, 0 lines differ
How it starts
The opening of the file, as written. The whole thing — 75 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 Overview
This is a Coinmarket MCP (Model Context Protocol) Server that provides cryptocurrency data from the CoinMarketCap API. The server implements the MCP specification to allow AI assistants to access cryptocurrency listings and quotes.
Architecture
- MCP Server: Built using the
mcpPython library, communicates via stdin/stdout - API Integration: Interfaces with CoinMarketCap Pro API for cryptocurrency data
- Resource System: Exposes cryptocurrency data as resources with
coinmarket://URI scheme - Tool System: Provides two tools for getting listings and quotes
Key Components
src/coinmarket_service/server.py: Main MCP server implementation with:- Resource handlers for cryptocurrency listings and quotes
- Tool handlers for
get_currency_listingsandget_quotes - API key authentication and request handling
src/coinmarket_service/__init__.py: Package entry point that runs the async server
Development Commands
Setup and Installation
# Install uv package manager (if not already installed)
curl -LsSf https://astral.sh/uv/install.sh | sh
# Install dependencies
uv sync
# Run the server
uv run coinmarket_service
Docker
# Build Docker image
docker build -t coinmarket-service .
# Run with Docker
docker run -e COINMARKET_API_KEY=your_api_key_here coinmarket-service
Linting
# Run ruff linter
uv run ruff check
uv run ruff format
Configuration
- Requires
COINMARKET_API_KEYenvironment variable - Uses
.envfile support via python-dotenv - Configuration for Claude Desktop requires absolute path to repository
MCP Server Details
The server implements:
- Resources:
coinmarket://cryptocurrency/listings- Latest cryptocurrency listingscoinmarket://cryptocurrency/quotes- Cryptocurrency quotes (supports slug/symbol query params)
- Tools:
get_currency_listings- No parameters requiredget_quotes- Optionalslugorsymbolparameters
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.
- 11d ago First seen · 75 lines · 524 tokens per session scan C adc3ffef64f2
coinmarket-mcp-server CLAUDE.md is an instructions file published in the GitHub repository anjor/coinmarket-mcp-server (50 stars, last pushed 1y ago), licensed MIT. It adds 524 tokens to every session, about $0.0026 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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