CoinStats

There's no API key to copy and no env var to manage: each user authorises the agent against their own CoinStats account in the browser, and the agent gets a per-user token from then on.

Settings →Connectors→Add custom connector. Paste the server URL and clickAdd:

{ "mcpServers": { "coinstats": { "url": "https://mcp.coinstats.app/mcp" } } }

Restart Cursor; on first call it opens a browser window for the OAuth flow.

claude mcp add coinstats --transport http https://mcp.coinstats.app/mcp

Claude Code opens a browser to authorise. Verify with:

codex mcp addonly registers the URL; it doesnotopen a browser. Runcodex mcp loginseparately:

codex mcp add coinstats --url https://mcp.coinstats.app/mcp codex mcp login coinstats

After the login stepcodex mcp listshould showAuth: OAuthforcoinstats.

- Look up real-time prices, charts and market data for 100,000+ coins
- Read your CoinStats portfolio coins, P/L and performance over time
- Query wallet balances and transactions across 120+ blockchains
- Compare ticker pricing across 200+ exchanges
- Pull crypto news (latest, trending, filtered by source or topic)

Discovery + OAuth flow follows the standard MCP / RFC pattern:

Token transport:Authorization: Bearer <token>. Singlecoinstatsscope today; granular scopes are on the roadmap.

Self-host / stdio fallback (developer mode)

If you want to run the MCP server yourself (no per-user OAuth, just a developer API key), the legacy stdio entry point is published on npm:

withCOINSTATS_API_KEYset in the env. Wire into a client like this:

The hosted server is a stateless Cloudflare Worker (~225 KiB / ~41 KiB gzipped) that:
- Exposes the RFC 9728 + RFC 8414 discovery endpoints.
- GatesPOST /mcpon aAuthorization: Bearer …token.
- Dispatches MCP JSON-RPC (initialize/tools/list/tools/call/ping) without session state.
- Forwards each tool call tohttps://openapiv1.coinstats.appcarrying the same bearer.

- src/worker.ts— Cloudflare Worker. Run withwrangler dev(port 8787 by default).
- src/index.ts— stdio server. Run withnode dist/index.jsafter building, or via the published npm package.

# Build the stdio CLI npm run build # Run the Worker locally (requires wrangler login first) npm run dev # Deploy the Worker — needs CLOUDFLARE_ACCOUNT_ID exported in the env # (the account ID isn't committed to wrangler.jsonc; pull it from the # Cloudflare dashboard sidebar or the CI deploy job's secrets). export CLOUDFLARE_ACCOUNT_ID=<your-cf-account-id> npm run deploy # Tail production logs npm run tail

For local Worker development you can override env vars:

wrangler dev --var OAUTH_ISSUER:http://localhost:1337 \ --var COINSTATS_API_BASE_URL:http://localhost:9999

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