\n\n[](https://github.com/cyanheads/coingecko-mcp-server/releases/latest/download/coingecko-mcp-server.mcpb) [](https://cursor.com/en/install-mcp?name=coingecko-mcp-server&config=eyJjb21tYW5kIjoibnB4IiwiYXJncyI6WyIteSIsIkBjeWFuaGVhZHMvY29pbmdlY2tvLW1jcC1zZXJ2ZXIiXX0=) [](https://vscode.dev/redirect?url=vscode:mcp/install?%7B%22name%22%3A%22coingecko-mcp-server%22%2C%22command%22%3A%22npx%22%2C%22args%22%3A%5B%22-y%22%2C%22%40cyanheads%2Fcoingecko-mcp-server%22%5D%7D)\n\n[](https://www.npmjs.com/package/@cyanheads/mcp-ts-core)\n\n
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\n\n**Keyless by default · runs locally.** No API key required — an optional CoinGecko Demo key raises the rate ceiling. Runs as a local stdio/HTTP server; there is no public hosted instance, since CoinGecko's terms do not permit redistributing their data. Data provided by [CoinGecko](https://www.coingecko.com/).\n\n
\n\n---\n\n## Tools\n\nEight tools covering the crypto market-data spine — slug resolution first, then prices, ranked markets, deep coin profiles, historical series, trending, and global macro stats. CoinGecko keys all data by **slug** (`bitcoin`, `ethereum`), not ticker (`BTC`, `ETH`), so `coingecko_search_coins` is the entry point that feeds every ID-keyed tool.\n\n| Tool | Description |\n|:---|:---|\n| `coingecko_search_coins` | Resolve a coin name or ticker symbol to a CoinGecko ID (slug). The required first step before any ID-keyed tool. |\n| `coingecko_get_prices` | Current price and core market stats for one or more coins in one or more currencies. Batch up to 250 slugs; reports unresolved ids in a `missing` field. |\n| `coingecko_list_markets` | Ranked market table — top coins by market cap, volume, or 24h change, optionally filtered to a category. |\n| `coingecko_get_coin` | Deep single-coin profile — description, links, market data, developer activity, community, sentiment. `sections` trims the large record. |\n| `coingecko_get_market_chart` | Historical price, market cap, and volume series. `recent` (last N days, auto-granularity) or `range` (explicit Unix-second window) mode. |\n| `coingecko_get_trending` | Coins trending on CoinGecko in the last 24 hours, by search volume. |\n| `coingecko_get_global` | Global crypto market snapshot — total market cap and volume, BTC/ETH dominance, active counts, ongoing ICOs, 24h change. |\n| `coingecko_list_categories` | Coin categories (`category_id` + display name) — the valid slugs for `coingecko_list_markets`'s `category` filter. |\n\n### `coingecko_search_coins`\n\nResolve a name or ticker to the CoinGecko slug every other tool keys on.\n\n- Tickers are not unique (many coins share `ETH`/`USDC`) — returns ranked candidates with `id`, `symbol`, `name`, and `market_cap_rank` to disambiguate\n- Returns the top 25 matches by relevance; discloses truncation when the list is capped\n- An empty result is a normal outcome (not an error), with guidance to broaden the query\n\n---\n\n### `coingecko_get_prices`\n\nCurrent price and core market stats (market cap, 24h volume, 24h change) for a batch of coins in a batch of currencies.\n\n- Batch-friendly — pass a whole portfolio of up to 250 slugs in one call\n- One row per `(id, currency)` that returned a price\n- A wrong/unknown slug returns an empty `200` upstream rather than an error; this tool diffs requested-vs-returned ids and lists the gaps in a `missing` field, so a typo reads as \"unresolved\", not \"nonexistent\"\n- Unsupported currency codes are silently dropped upstream and surfaced as a notice\n- Throws `all_missing` only when **no** requested id resolved\n\n---\n\n### `coingecko_list_markets`\n\nThe entry point for \"top 20 DeFi coins\" or \"biggest gainers today\".\n\n- Sort by market cap, volume, or 24h price change (ascending or descending)\n- Optional category filter — pass a `category_id` from `coingecko_list_categories`\n- Pagination via `page` and `per_page` (up to 250 rows); discloses when a page is full\n- Per-coin market fields: price, cap, volume, 1h/24h/7d change, supply, ATH/ATL\n- Detects an unrecognized category (CoinGecko returns empty rather than erroring) and maps it to `unknown_category`\n\n---\n\n### `coingecko_get_coin`\n\nThe full picture for \"tell me everything about Ethereum\".\n\n- Six sections — `profile`, `market`, `links`, `developer`, `community`, `sentiment`; pass `sections` to fetch only what you need (the full record is large)\n- Market figures denominated in a chosen `vs_currency`\n- `categories` here are display names (e.g. `\"Layer 1 (L1)\"`), distinct from the `category_id` slugs returned by `coingecko_list_categories`\n- Upstream is sparse — absent fields are omitted rather than fabricated\n\n---\n\n### `coingecko_get_market_chart`\n\nHistorical series for trend and charting questions (use `coingecko_get_prices` for the current snapshot).\n\n- `recent` mode: last N days, with granularity auto-scaling by span (≤1 day → ~5-min, 2–90 → hourly, >90 → daily); pass `days` (or `\"max\"`)\n- `range` mode: an explicit window via `from`/`to` as Unix **seconds**\n- Returns timestamped point arrays for price, market cap, and volume\n- Chart timestamps are Unix **milliseconds** (note: `coingecko_get_prices` last-updated is in seconds)\n\n---\n\n### `coingecko_get_trending`\n\nA heartbeat for \"what's hot in crypto right now\". No parameters.\n\n- Coins trending by 24-hour search volume, with rank, USD price, and 24h USD change\n- Upstream reports market cap and volume as pre-formatted display strings, not numbers — those are omitted rather than presented as numeric data\n\n## Resources and prompts\n\n| Type | Name | Description |\n|:---|:---|:---|\n| Resource | `coingecko://coin/{id}` | Deep coin record by slug — same data as `coingecko_get_coin` (full record, USD market figures). |\n| Resource | `coingecko://global` | Global crypto market snapshot — same data as `coingecko_get_global`. |\n| Prompt | `coingecko_coin_research` | Guides a full single-coin research pass through the search → get_coin → get_market_chart → get_global chain. |\n\nAll resource data is also reachable via tools — the resources mirror `coingecko_get_coin` and `coingecko_get_global` exactly, so tool-only clients lose nothing. Large collections (markets, categories) are not exposed as resources; use `coingecko_list_markets` and `coingecko_list_categories` instead.\n\n## Features\n\nBuilt on [`@cyanheads/mcp-ts-core`](https://www.npmjs.com/package/@cyanheads/mcp-ts-core):\n\n- Declarative tool, resource, and prompt definitions — single file per primitive, framework handles registration and validation\n- Unified error handling — handlers throw, framework catches, classifies, and formats\n- Pluggable auth: `none`, `jwt`, `oauth`\n- Swappable storage backends: `in-memory`, `filesystem`, `Supabase`, `Cloudflare KV/R2/D1`\n- Structured logging with optional OpenTelemetry tracing\n- STDIO and Streamable HTTP transports\n\nCoinGecko-specific:\n\n- Type-safe client for the CoinGecko v3 REST API, with one service method per endpoint\n- Runs keyless on the public tier; an optional Demo API key (`x-cg-demo-api-key`) raises the rate ceiling with no other config change\n- Calibrated retry/backoff on the rate-limited public tier — 429s, 5xx, and timeouts retry; `Retry-After` is honored\n- Three distinct upstream error shapes mapped to typed reasons (404 → `coin_not_found`, 429 → `rate_limited`, the `/simple/price` silent miss handled as a `missing` field, not an error)\n\nAgent-friendly output:\n\n- Search-before-query enforced through descriptions — every ID-keyed tool states slugs-not-tickers and points back to `coingecko_search_coins`\n- Provenance and graceful degradation — `coingecko_get_prices` reports unresolved ids and dropped currencies instead of failing; truncation and applied filters are disclosed via enrichment\n- Units made explicit — timestamp fields document seconds vs. milliseconds so callers don't misread them\n- Required CoinGecko attribution carried on every tool, resource, and prompt output\n\n## Getting started\n\nAdd the following to your MCP client configuration file. No API key is required — set `COINGECKO_API_KEY` only to attach the higher CoinGecko Demo tier (see [Configuration](#configuration)).\n\n```json\n{\n \"mcpServers\": {\n \"coingecko-mcp-server\": {\n \"type\": \"stdio\",\n \"command\": \"bunx\",\n \"args\": [\"@cyanheads/coingecko-mcp-server@latest\"],\n \"env\": {\n \"MCP_TRANSPORT_TYPE\": \"stdio\",\n \"MCP_LOG_LEVEL\": \"info\"\n }\n }\n }\n}\n```\n\nOr with npx (no Bun required):\n\n```json\n{\n \"mcpServers\": {\n \"coingecko-mcp-server\": {\n \"type\": \"stdio\",\n \"command\": \"npx\",\n \"args\": [\"-y\", \"@cyanheads/coingecko-mcp-server@latest\"],\n \"env\": {\n \"MCP_TRANSPORT_TYPE\": \"stdio\",\n \"MCP_LOG_LEVEL\": \"info\"\n }\n }\n }\n}\n```\n\nOr with Docker:\n\n```json\n{\n \"mcpServers\": {\n \"coingecko-mcp-server\": {\n \"type\": \"stdio\",\n \"command\": \"docker\",\n \"args\": [\n \"run\", \"-i\", \"--rm\",\n \"-e\", \"MCP_TRANSPORT_TYPE=stdio\",\n \"ghcr.io/cyanheads/coingecko-mcp-server:latest\"\n ]\n }\n }\n}\n```\n\nTo attach a CoinGecko Demo key, add `\"COINGECKO_API_KEY\": \"your-demo-key\"` to the `env` block (or `-e COINGECKO_API_KEY=your-demo-key` for Docker).\n\nFor Streamable HTTP, set the transport and start the server:\n\n```sh\nMCP_TRANSPORT_TYPE=http MCP_HTTP_PORT=3010 bun run start:http\n# Server listens at http://localhost:3010/mcp\n```\n\nRefer to \"your MCP client configuration file\" generically — different clients use different config paths and this server isn't client-specific.\n\n### Prerequisites\n\n- [Bun v1.3.2](https://bun.sh/) or higher (or Node.js v24+).\n- No account or API key required to run. Optionally, a free [CoinGecko Demo API key](https://www.coingecko.com/en/api/pricing) for a higher rate ceiling (10k calls/month, 100 req/min) over the shared keyless public pool.\n\n### Installation\n\n1. **Clone the repository:**\n\n```sh\ngit clone https://github.com/cyanheads/coingecko-mcp-server.git\n```\n\n2. **Navigate into the directory:**\n\n```sh\ncd coingecko-mcp-server\n```\n\n3. **Install dependencies:**\n\n```sh\nbun install\n```\n\n4. **Configure environment (optional):**\n\n```sh\ncp .env.example .env\n# the server runs with no .env at all; edit only to set COINGECKO_API_KEY\n```\n\n## Configuration\n\nThe server runs with zero configuration. The one server-specific variable is optional:\n\n| Variable | Description | Default |\n|:---|:---|:---|\n| `COINGECKO_API_KEY` | Optional CoinGecko **Demo** API key. When set, it is sent as the `x-cg-demo-api-key` header for the dedicated Demo tier (10k/mo, 100 req/min); the base URL is unchanged. Absent → keyless public tier (shared, IP-throttled). | — |\n| `MCP_TRANSPORT_TYPE` | Transport: `stdio` or `http`. | `stdio` |\n| `MCP_HTTP_PORT` | Port for the HTTP server. | `3010` |\n| `MCP_HTTP_ENDPOINT_PATH` | HTTP endpoint path. | `/mcp` |\n| `MCP_AUTH_MODE` | Auth mode: `none`, `jwt`, or `oauth`. | `none` |\n| `MCP_LOG_LEVEL` | Log level (RFC 5424). | `info` |\n| `LOGS_DIR` | Directory for log files (Node.js only). | `/logs` |\n| `STORAGE_PROVIDER_TYPE` | Storage backend. | `in-memory` |\n| `OTEL_ENABLED` | Enable [OpenTelemetry instrumentation](https://github.com/cyanheads/mcp-ts-core/tree/main/docs/telemetry) (spans, metrics, completion logs). | `false` |\n\nSee [`.env.example`](./.env.example) for the full list of optional overrides.\n\n**Rate limits and freshness.** The keyless public tier shares an IP-throttled pool, so bursty multi-tool workflows can hit `429`s under light load; the server backs off and retries, but cannot raise the ceiling — a free Demo key does. CoinGecko data refreshes roughly every 60 seconds and is not tick-level.\n\n## Running the server\n\n### Local development\n\n- **Build and run:**\n\n ```sh\n # One-time build\n bun run rebuild\n\n # Run the built server\n bun run start:stdio\n # or\n bun run start:http\n ```\n\n- **Run checks and tests:**\n\n ```sh\n bun run devcheck # Lint, format, typecheck, security\n bun run test # Vitest test suite\n bun run lint:mcp # Validate MCP definitions against spec\n ```\n\n### Docker\n\n```sh\ndocker build -t coingecko-mcp-server .\ndocker run --rm -e MCP_TRANSPORT_TYPE=http -p 3010:3010 coingecko-mcp-server\n```\n\nThe Dockerfile defaults to HTTP transport, stateless session mode, and logs to `/var/log/coingecko-mcp-server`. OpenTelemetry peer dependencies are installed by default — build with `--build-arg OTEL_ENABLED=false` to omit them.\n\n## Project structure\n\n| Directory | Purpose |\n|:---|:---|\n| `src/index.ts` | `createApp()` entry point — registers tools/resources/prompts and inits the CoinGecko service. |\n| `src/config` | Server-specific environment variable parsing and validation with Zod. |\n| `src/mcp-server/tools` | Tool definitions (`*.tool.ts`). |\n| `src/mcp-server/resources` | Resource definitions (`*.resource.ts`). |\n| `src/mcp-server/prompts` | Prompt definitions (`*.prompt.ts`). |\n| `src/services/coingecko` | CoinGecko v3 REST API service — HTTP client, retry/error mapping, response normalization, domain types. |\n| `tests/` | Unit and integration tests mirroring `src/`. |\n\n## Development guide\n\nSee [`CLAUDE.md`/`AGENTS.md`](./CLAUDE.md) for development guidelines and architectural rules. The short version:\n\n- Handlers throw, framework catches — no `try/catch` in tool logic\n- Use `ctx.log` for request-scoped logging, `ctx.state` for tenant-scoped storage\n- Register new tools and resources via the `createApp()` arrays in `src/index.ts`\n- Wrap external API calls: validate raw → normalize to domain type → return output schema; never fabricate missing fields\n\n## Contributing\n\nIssues and pull requests are welcome. Run checks and tests before submitting:\n\n```sh\nbun run devcheck\nbun run test\n```\n\n## License\n\nApache-2.0 — see [LICENSE](./LICENSE) for details.\n",
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