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@cyanheads/eurostat-mcp-server

Search and query 8,933 Eurostat datasets — EU economy, demography, trade, health, and NUTS regional data via MCP. STDIO or Streamable HTTP.\n

5 Tools • 1 Resource

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\n\n\n\n[![Version](https://img.shields.io/badge/Version-0.1.12-blue.svg?style=flat-square)](./CHANGELOG.md) [![License](https://img.shields.io/badge/License-Apache%202.0-orange.svg?style=flat-square)](./LICENSE) [![Docker](https://img.shields.io/badge/Docker-ghcr.io-2496ED?style=flat-square&logo=docker&logoColor=white)](https://github.com/users/cyanheads/packages/container/package/eurostat-mcp-server) [![MCP SDK](https://img.shields.io/badge/MCP%20SDK-^1.29.0-green.svg?style=flat-square)](https://modelcontextprotocol.io/) [![npm](https://img.shields.io/npm/v/@cyanheads/eurostat-mcp-server?style=flat-square&logo=npm&logoColor=white)](https://www.npmjs.com/package/@cyanheads/eurostat-mcp-server) [![TypeScript](https://img.shields.io/badge/TypeScript-^6.0.3-3178C6.svg?style=flat-square)](https://www.typescriptlang.org/) [![Bun](https://img.shields.io/badge/Bun-v1.3.2-blueviolet.svg?style=flat-square)](https://bun.sh/)\n\n

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\n\n[![Install in Claude Desktop](https://img.shields.io/badge/Install_in-Claude_Desktop-D97757?style=for-the-badge&logo=anthropic&logoColor=white)](https://github.com/cyanheads/eurostat-mcp-server/releases/latest/download/eurostat-mcp-server.mcpb) [![Install in Cursor](https://cursor.com/deeplink/mcp-install-dark.svg)](https://cursor.com/en/install-mcp?name=eurostat-mcp-server&config=eyJjb21tYW5kIjoibnB4IiwiYXJncyI6WyIteSIsIkBjeWFuaGVhZHMvZXVyb3N0YXQtbWNwLXNlcnZlciJdfQ==) [![Install in VS Code](https://img.shields.io/badge/VS_Code-Install_Server-0098FF?style=for-the-badge&logo=visualstudiocode&logoColor=white)](https://vscode.dev/redirect?url=vscode:mcp/install?%7B%22name%22%3A%22eurostat-mcp-server%22%2C%22command%22%3A%22npx%22%2C%22args%22%3A%5B%22-y%22%2C%22%40cyanheads%2Feurostat-mcp-server%22%5D%7D)\n\n[![Framework](https://img.shields.io/badge/Built%20on-@cyanheads/mcp--ts--core-67E8F9?style=flat-square)](https://www.npmjs.com/package/@cyanheads/mcp-ts-core)\n\n

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\n\n**Public Hosted Server:** [https://eurostat.caseyjhand.com/mcp](https://eurostat.caseyjhand.com/mcp)\n\n

\n\n---\n\n## Tools\n\n5 tools for discovering and querying Eurostat statistical datasets:\n\n| Tool | Description |\n|:---|:---|\n| `eurostat_search_datasets` | Search the Eurostat catalogue (8,933 datasets) by keyword — returns codes, descriptions, period coverage, and theme breadcrumbs |\n| `eurostat_browse_themes` | Navigate the Eurostat theme hierarchy — list root themes or drill into subthemes and datasets |\n| `eurostat_get_dataset_info` | Fetch metadata for a dataset: dimensions with sample values, time range, observation count, and last-update date |\n| `eurostat_get_dimension_values` | List all valid codes for a specific dimension (e.g., all geo codes, all unit codes); supports NUTS hierarchy filtering |\n| `eurostat_query_dataset` | Fetch decoded statistical observations with dimension filters, NUTS geo-level, and time-range controls |\n\n### `eurostat_search_datasets`\n\nSearch the Eurostat dataset catalogue by keyword.\n\n- Case-insensitive substring match against dataset labels across 8,933 datasets\n- Returns code, label, type (dataset/table), period coverage, observation count, and theme breadcrumb\n- Configurable result limit (1–100, default 20); reports total matches before the limit\n- Catalogue loaded once per session from the Eurostat TOC file\n- Pair with `eurostat_browse_themes` for structured domain exploration when keywords are unclear\n\n---\n\n### `eurostat_browse_themes`\n\nNavigate the Eurostat theme tree.\n\n- Without `theme_code`: returns the 11 top-level themes (Economy and finance, Population, Transport, etc.)\n- With `theme_code`: returns immediate children — subtheme folders and datasets in that branch\n- Each entry includes code, label, type (folder/dataset/table), data period, and observation count where available\n- Returns a breadcrumb path from root to the current node\n- Use for structured discovery when you know the domain but not the exact dataset code\n\n---\n\n### `eurostat_get_dataset_info`\n\nFetch metadata for a Eurostat dataset before querying it.\n\n- Returns all dimensions with their codes, labels, and up to 10 sample values each\n- Reports overall time range and total observation count across all periods\n- Uses a minimal Statistics API call (most recent period only) for efficiency\n- For dimensions with more than 10 values, use `eurostat_get_dimension_values` for the full list\n- Provides a link to the ESMS metadata page when available\n\n---\n\n### `eurostat_get_dimension_values`\n\nList all valid values for a specific dataset dimension.\n\n- Retrieves the complete set of valid codes and labels for any dimension (unit, na_item, geo, etc.)\n- For the `geo` dimension, supports NUTS hierarchy filtering: `aggregate` (EU/EA totals), `country` (41 states), `nuts1` (127 major regions), `nuts2` (309 basic regions), `nuts3` (1,343 small regions)\n- Prevents silent no-data returns — invalid dimension values in `eurostat_query_dataset` return nothing without error; verify codes here first\n\n---\n\n### `eurostat_query_dataset`\n\nFetch statistical data from a Eurostat dataset.\n\n- Accepts dimension filters as a map of `{dimension_code: [value1, value2, ...]}`\n- NUTS geo-level filter (`aggregate`, `country`, `nuts1`, `nuts2`, `nuts3`) — mutually exclusive with a `geo` key in filters\n- Time range via `since_period`/`until_period` (e.g., `\"2020\"`, `\"2023-Q1\"`) or `last_n_periods` for the N most recent\n- Returns decoded observations with dimension codes and labels, numeric values, and status flags (`p` = provisional, `e` = estimated, etc.)\n- Reports total observation count, missing value count, and effective time range of the result\n- Async-response detection — large unfiltered queries return an actionable error with filter guidance rather than silently timing out\n\n## Resource\n\n| Type | Name | Description |\n|:---|:---|:---|\n| Resource | `eurostat://dataset/{dataset_code}` | Dataset metadata (dimensions, time range, obs count, last-updated) accessible by URI for cache-injectable context |\n\n## Features\n\nBuilt on [`@cyanheads/mcp-ts-core`](https://github.com/cyanheads/mcp-ts-core):\n\n- Declarative tool definitions — single file per tool, framework handles registration and validation\n- Unified error handling across all tools\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- Runs locally (stdio/HTTP) or on Cloudflare Workers from the same codebase\n\nEurostat-specific:\n\n- Session-level in-memory cache for the TOC file — loaded once, reused across all search and browse calls\n- JSON-stat 2.0 stride-based decoder for the Statistics API response format\n- Async-response detection — Eurostat returns a warning object rather than an error for over-limit queries; the server intercepts it and returns an actionable error with filter guidance\n- NUTS hierarchy geo-level filtering across query and dimension-value tools\n- Status flag decoding (provisional, estimated, definition differs, etc.)\n\nAgent-friendly output:\n\n- Discovery workflow: `eurostat_search_datasets` / `eurostat_browse_themes` → `eurostat_get_dataset_info` → `eurostat_get_dimension_values` → `eurostat_query_dataset`\n- Invalid dimension codes in query filters silently return no data from Eurostat — the `eurostat_get_dimension_values` tool prevents this by letting agents verify codes first\n- Structured error contracts with typed reasons and recovery hints on all tools\n\n## Getting started\n\n### Public Hosted Instance\n\nA public instance is available at `https://eurostat.caseyjhand.com/mcp` — no installation required. Point any MCP client at it via Streamable HTTP:\n\n```json\n{\n \"mcpServers\": {\n \"eurostat-mcp-server\": {\n \"type\": \"streamable-http\",\n \"url\": \"https://eurostat.caseyjhand.com/mcp\"\n }\n }\n}\n```\n\n### Self-Hosted / Local\n\nAdd the following to your MCP client configuration file.\n\n```json\n{\n \"mcpServers\": {\n \"eurostat-mcp-server\": {\n \"type\": \"stdio\",\n \"command\": \"bunx\",\n \"args\": [\"@cyanheads/eurostat-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 \"eurostat-mcp-server\": {\n \"type\": \"stdio\",\n \"command\": \"npx\",\n \"args\": [\"-y\", \"@cyanheads/eurostat-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 \"eurostat-mcp-server\": {\n \"type\": \"stdio\",\n \"command\": \"docker\",\n \"args\": [\"run\", \"-i\", \"--rm\", \"-e\", \"MCP_TRANSPORT_TYPE=stdio\", \"ghcr.io/cyanheads/eurostat-mcp-server:latest\"]\n }\n }\n}\n```\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\n### Prerequisites\n\n- [Bun v1.3.2](https://bun.sh/) or higher. No API key required — Eurostat's dissemination API is public.\n\n### Installation\n\n1. **Clone the repository:**\n\n```sh\ngit clone https://github.com/cyanheads/eurostat-mcp-server.git\n```\n\n2. **Navigate into the directory:**\n\n```sh\ncd eurostat-mcp-server\n```\n\n3. **Install dependencies:**\n\n```sh\nbun install\n```\n\n## Configuration\n\nAll configuration is validated at startup via Zod schemas in `src/config/server-config.ts`. Key environment variables:\n\n| Variable | Description | Default |\n|:---|:---|:---|\n| `MCP_TRANSPORT_TYPE` | Transport: `stdio` or `http` | `stdio` |\n| `MCP_HTTP_PORT` | HTTP server port | `3010` |\n| `MCP_HTTP_ENDPOINT_PATH` | HTTP endpoint path | `/mcp` |\n| `MCP_PUBLIC_URL` | Public origin override for TLS-terminating reverse-proxy deployments | none |\n| `MCP_AUTH_MODE` | Authentication: `none`, `jwt`, or `oauth` | `none` |\n| `MCP_LOG_LEVEL` | Log level (`debug`, `info`, `warning`, `error`, etc.) | `info` |\n| `MCP_GC_PRESSURE_INTERVAL_MS` | Opt-in Bun-only forced-GC pressure loop (ms). Recommended starting point if heap growth is observed: `60000`. | `0` (disabled) |\n| `LOGS_DIR` | Directory for log files (Node.js only) | `/logs` |\n| `STORAGE_PROVIDER_TYPE` | Storage backend: `in-memory`, `filesystem`, `supabase`, `cloudflare-kv/r2/d1` | `in-memory` |\n| `EUROSTAT_BASE_URL` | Eurostat API base URL | `https://ec.europa.eu/eurostat/api/dissemination` |\n| `EUROSTAT_REQUEST_TIMEOUT_MS` | HTTP request timeout in ms | `30000` |\n| `OTEL_ENABLED` | Enable OpenTelemetry | `false` |\n\n## Running the server\n\n### Local development\n\n- **Build and run the production version**:\n\n ```sh\n # One-time build\n bun run rebuild\n\n # Run the built server\n bun run start:http\n # or\n bun run start:stdio\n ```\n\n- **Run checks and tests**:\n ```sh\n bun run devcheck # Lints, formats, type-checks, and more\n bun run test # Runs the test suite\n ```\n\n## Project structure\n\n| Directory | Purpose |\n|:---|:---|\n| `src/mcp-server/tools` | Tool definitions (`*.tool.ts`). Five tools for discovery and data access. |\n| `src/mcp-server/resources` | Resource definitions. Dataset metadata resource. |\n| `src/services/eurostat-catalogue` | Catalogue service — fetches and parses the Eurostat TOC TXT file; session-level in-memory cache. |\n| `src/services/eurostat-data` | Data service — Statistics API HTTP client, JSON-stat 2.0 decoder, async-response detection. |\n| `src/config` | Server-specific environment variable parsing and validation with Zod. |\n| `tests/` | Unit and integration tests, mirroring the `src/` structure. |\n\n## Development guide\n\nSee [`CLAUDE.md`](https://github.com/cyanheads/eurostat-mcp-server/blob/main/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 logging, `ctx.state` for storage\n- Register new tools and resources in the `createApp()` arrays\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\nThis project is licensed under the Apache 2.0 License. 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