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@cyanheads/worldbank-mcp-server

Query 29,500+ World Bank development indicators for 200+ countries across 60+ years via MCP. STDIO or Streamable HTTP.\n

9 Tools • 2 Resources

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\n\n[![Version](https://img.shields.io/badge/Version-0.3.2-blue.svg?style=flat-square)](./CHANGELOG.md) [![License](https://img.shields.io/badge/License-Apache%202.0-orange.svg?style=flat-square)](./LICENSE) [![MCP SDK](https://img.shields.io/badge/MCP%20SDK-^2.0.0-green.svg?style=flat-square)](https://modelcontextprotocol.io/) [![npm](https://img.shields.io/npm/v/@cyanheads/worldbank-mcp-server?style=flat-square&logo=npm&logoColor=white)](https://www.npmjs.com/package/@cyanheads/worldbank-mcp-server) [![TypeScript](https://img.shields.io/badge/TypeScript-^7.0.2-3178C6.svg?style=flat-square)](https://www.typescriptlang.org/) [![Bun](https://img.shields.io/badge/Bun-v1.4.0-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/worldbank-mcp-server/releases/latest/download/worldbank-mcp-server.mcpb) [![Install in Cursor](https://cursor.com/deeplink/mcp-install-dark.svg)](https://cursor.com/en/install-mcp?name=worldbank-mcp-server&config=eyJjb21tYW5kIjoibnB4IiwiYXJncyI6WyIteSIsIkBjeWFuaGVhZHMvd29ybGRiYW5rLW1jcC1zZXJ2ZXIiXX0=) [![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%22worldbank-mcp-server%22%2C%22command%22%3A%22npx%22%2C%22args%22%3A%5B%22-y%22%2C%22%40cyanheads%2Fworldbank-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**Public Hosted Server:** [https://worldbank.caseyjhand.com/mcp](https://worldbank.caseyjhand.com/mcp)\n\n

\n\n---\n\n## Tools\n\n9 tools for browsing and querying the World Bank Open Data API:\n\n| Tool | Description |\n|:---|:---|\n| `worldbank_list_topics` | List all 21 World Bank thematic topics with descriptions |\n| `worldbank_list_sources` | List 70+ World Bank data sources (datasets) with pagination |\n| `worldbank_list_countries` | List countries and regional aggregates with ISO codes, region, income level, and coordinates |\n| `worldbank_get_country` | Fetch full metadata for a specific country or aggregate by ISO2, ISO3, or aggregate code |\n| `worldbank_search_indicators` | Search the 29,500+ indicator catalog by keyword, topic, or source |\n| `worldbank_get_indicator` | Fetch complete metadata for a single indicator: name, description, source, unit, and topics |\n| `worldbank_get_data` | Query indicator values for one or more countries across a time range or most-recent N values |\n| `worldbank_get_poverty` | Poverty headcount, gap, and severity at any poverty line, plus the Gini coefficient and decile shares, from the Poverty and Inequality Platform |\n| `worldbank_search_projects` | Search the World Bank lending portfolio by text, country, region, status, and board approval date |\n\n### `worldbank_list_topics`\n\nList all 21 World Bank thematic topic categories.\n\n- No input required — returns the complete fixed taxonomy\n- Topics include Agriculture, Economy & Growth, Education, Energy & Mining, Environment, Financial Sector, Health, Infrastructure, Poverty, Private Sector, Public Sector, Science & Technology, Social Development, Social Protection & Labor, Trade, Urban Development, and more\n- Returns topic IDs used to filter `worldbank_search_indicators`\n\n---\n\n### `worldbank_list_sources`\n\nList the 70+ World Bank data sources (datasets).\n\n- Paginated with configurable page size (up to 100 per page)\n- Each source includes ID, name, short code, last-updated date, and data/metadata availability status\n- Source IDs used to filter `worldbank_search_indicators` by dataset origin (e.g. \"2\" for World Development Indicators, \"6\" for IDS)\n\n---\n\n### `worldbank_list_countries`\n\nList countries and regional aggregates with metadata.\n\n- Returns ISO codes, World Bank region, income level, capital city, and coordinates\n- Filterable by region code (EAS, ECS, LCN, MEA, NAC, SAS, SSF) and income level (LIC, LMC, UMC, HIC)\n- By default returns individual countries only; set `include_aggregates=true` to include regional, income-group, and world aggregate entities\n- Paginated with up to 300 entries per page\n\n---\n\n### `worldbank_get_country`\n\nFetch full metadata for a single country or aggregate entity.\n\n- Accepts ISO2 (US), ISO3 (USA), or World Bank aggregate codes (EAS, HIC, WLD)\n- Returns region, income level, lending type, capital city, and coordinates\n- Structured error with recovery hint when code is not found\n\n---\n\n### `worldbank_search_indicators`\n\nSearch the 29,500+ World Bank indicator catalog.\n\n- Keyword search, topic filter, source filter — at least one required\n- The upstream `searchterm` parameter does not filter, so keyword matching runs locally over the full catalog (or the full selected topic/source): every term must appear in the indicator ID, name, or description, in any word order, with punctuation ignored\n- Exact ID or name matches rank first, then whole-phrase matches, then other ID/name matches, then description-only matches — so pasting an indicator name (`GDP (current US$)`) or ID (`NY.GDP.MKTP.CD`) returns it as the top hit\n- Returns indicator IDs, names, source dataset, and thematic topics\n- One row per indicator ID — the 43 indicators published under both a live source and an archived copy collapse to the live row, and `worldbank_get_indicator` resolves to the same one\n- Indicator IDs (e.g. `NY.GDP.PCAP.CD`, `SP.POP.TOTL`) feed directly into `worldbank_get_data`\n- Echoes the filters it applied (`query`, `topic_id`, `source_id`) alongside the results\n- Paginated with up to 100 results per page\n\n---\n\n### `worldbank_get_indicator`\n\nFetch complete metadata for a known indicator ID.\n\n- Returns full description, unit of measurement, source dataset, source organization, and thematic topics\n- Structured error with recovery hint when ID is not found\n\n---\n\n### `worldbank_get_data`\n\nQuery indicator values for countries across time. The primary data-access tool.\n\n- Single country, array of countries, regional codes (EAS, LCN, …), income codes (HIC, LMC, …), world code (WLD), or `\"all\"` for every entry. At least one code is required — an empty value is rejected rather than read as `\"all\"`\n- Time filtering: `date_range` for a period or range — annual (`2020`, `2010:2023`), quarterly (`2020Q1:2021Q4`), or monthly (`2020M01:2020M06`) — or `mrv` for the N most recent available values (1–100). Mutually exclusive.\n- A `date_range` the API can't apply is enforced locally over the whole series, so observations outside the requested window are never returned as matches\n- Returns observations with `null` values when data is not available for a country×year cell — common for sparse series\n- Includes `nullCount` per page to surface data sparsity\n- Output grouped by country for readability; `isAggregate` flag distinguishes all 78 regional, income-group, and lending-group aggregates from individual countries\n- Echoes the parameters it sent upstream — indicator, normalized country codes, date range or `mrv`, page and page size\n- Paginated with up to 1000 entries per page\n\n---\n\n### `worldbank_get_poverty`\n\nPoverty and inequality estimates from the World Bank [Poverty and Inequality Platform](https://pip.worldbank.org/) (PIP) — a separate dataset from the WDI series the other tools read.\n\n- Poverty headcount ratio, poverty gap, poverty severity, and the Watts index at **any** poverty line, not only the published thresholds. Omit `poverty_line` to use the international line of the PIP release currently served, which is echoed back on every row\n- The same row carries the inequality and distribution block: Gini coefficient, mean log deviation, Wolfson polarization, and the ten decile income/consumption shares. One tool, because PIP returns poverty and inequality together and the poverty line does not affect the distribution\n- Every row states how it was produced. `estimationType: \"survey\"` rows carry the full inequality block; `\"interpolation\"`, `\"extrapolation\"`, and `\"CMD estimation\"` rows are gap-filled estimates for years no survey covers, and their `gini`, `mld`, `polarization`, and `decileShares` are `null` — a gap in the source data, not an error. `surveyYear`, `surveyAcronym`, and `isInterpolated` sit alongside them\n- `fill_gaps` defaults to `true`, so years the surveys don't reach come back as PIP's own estimate rather than as an empty result or a hole in the series. Survey rows win wherever one exists, so a single-year batch can carry real distributions for some economies and labelled estimates for others, and a full-history query returns a row per year with the real distribution on the survey years. Set `fill_gaps=false` for survey-derived rows only\n- Welfare is measured in PPP dollars per person per day. `welfare_type` pins results to income or consumption surveys, which are not directly comparable; thirty-five economies publish both and return a row for each\n- Ten economies publish an urban/rural split and return an extra row per year for it — China alone reports all three levels, the rest pair national with either urban or rural. `reporting_level` narrows to one, and every row states its own\n- `year` accepts a four-digit year, `\"all\"` for the full history, or `\"MRV\"` for the most recent available. Coverage starts in 1963\n- Individual economies only, by ISO3 code — PIP does not serve regional, income-group, or world aggregate codes through this endpoint, and a structured error says so\n- Paginated locally with up to 1000 entries per page, since PIP itself has no pagination\n\n---\n\n### `worldbank_search_projects`\n\nThe World Bank [lending portfolio](https://projects.worldbank.org/) — the individual loans, credits, and grants the Bank finances — rather than the statistics the other tools read. A third upstream API, on its own host, with its own envelope and conventions.\n\n- Free-text `query` across project names, abstracts, and objectives, combined with exact filters on `countries`, `region`, `status`, and a board-approval date window. Every filter is an AND, and every multi-value filter is an OR within itself\n- Returns the project ID, name, borrowing country and region, status, board approval and closing dates, total commitment in USD, financing windows (IBRD, IDA, Grants), major sectors, and a link to the project page\n- **Countries are ISO2 here** (`BR`, `IN`, `ZA`) — the one place this server departs from the ISO3 codes its other tools take, because the Projects API keys on ISO2. Multi-country operations carry a World Bank regional code instead (`3A`, `4E`), two characters like the rest. An ISO3 code is rejected at the schema with a message naming the difference, rather than being passed upstream where it would come back as a silent zero-hit. `worldbank_get_country` reports a country's `iso2` field for either form\n- `status` is a closed set (`Active`, `Closed`, `Dropped`, `Pipeline`) and `region` is the nine World Bank operational regions, both enforced by the schema — a typo in either can't reach upstream and read back as \"no results\"\n- An empty result says which filter emptied it. When a country filter was in force, the search re-runs it on its own: either no project carries those codes at all, or they match as a set and the remaining filters are what narrowed the result to nothing, and the notice names them\n- `include_abstract` is off by default. Abstracts run to a median of roughly 1,200 characters and are published for about half the portfolio, so a full page of them roughly doubles the response — turn it on once the result set is small enough to read\n- Offset-paginated with up to 1000 entries per page, which is also the most the API returns for one request\n\n## Resources\n\n| Type | Name | Description |\n|:---|:---|:---|\n| Resource | `worldbank://indicator/{indicatorId}` | Indicator metadata by ID — name, description, source, unit, and topics |\n| Resource | `worldbank://country/{countryCode}` | Country metadata by ISO2, ISO3, or aggregate code — region, income level, capital, coordinates |\n\nBoth resources return a structured not-found error with a recovery hint for an unknown ID or code. An upstream outage, timeout, or 5xx keeps its own classification, so a transient failure is distinguishable from a bad identifier.\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\nWorld Bank-specific:\n\n- Full World Bank Open Data API v2 coverage — topics, sources, countries, indicators, and observations\n- 60+ years of development data across 29,500+ indicators for 200+ countries and regional aggregates\n- Client-side topic/source + keyword compound filtering (works around upstream API limitation)\n- Null-value transparency — `null` observations and `nullCount` surfaced rather than silently dropped\n- `isAggregate` flag on every country/data row to distinguish individual countries from aggregate entities\n\nAgent-friendly output:\n\n- Tool cross-references woven into descriptions — e.g. `worldbank_search_indicators` names `worldbank_list_topics` for topic IDs, `worldbank_get_data` names `worldbank_search_indicators` for indicator discovery\n- Structured error contracts with typed `reason` codes and actionable `recovery` hints on every tool\n- Consistent pagination metadata (`page`, `pages`, `total`) across all list/search/data tools\n\n## Getting started\n\n### Self-Hosted / Local\n\nAdd the following to your MCP client configuration file.\n\n```json\n{\n \"mcpServers\": {\n \"worldbank-mcp-server\": {\n \"type\": \"stdio\",\n \"command\": \"bunx\",\n \"args\": [\"@cyanheads/worldbank-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 \"worldbank-mcp-server\": {\n \"type\": \"stdio\",\n \"command\": \"npx\",\n \"args\": [\"-y\", \"@cyanheads/worldbank-mcp-server@latest\"],\n \"env\": {\n \"MCP_TRANSPORT_TYPE\": \"stdio\",\n \"MCP_LOG_LEVEL\": \"info\"\n }\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 v1.3.0](https://bun.sh/) or higher (or Node.js ≥24.0.0).\n- No API key required — the World Bank Open Data API is public and unauthenticated.\n\n### Installation\n\n1. **Clone the repository:**\n\n```sh\ngit clone https://github.com/cyanheads/worldbank-mcp-server.git\n```\n\n2. **Navigate into the directory:**\n\n```sh\ncd worldbank-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`. 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_HOST` | HTTP server hostname | `127.0.0.1` |\n| `MCP_HTTP_ENDPOINT_PATH` | HTTP endpoint path where the MCP server is mounted | `/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_SESSION_MODE` | HTTP session handling: `stateful`, `stateless`, or `auto`. This server holds no per-session state; `.env.example` and the Docker image both set `stateless` | `auto` (resolves to `stateful`) |\n| `MCP_LOG_LEVEL` | Log level (`debug`, `info`, `warning`, `error`) | `info` |\n| `STORAGE_PROVIDER_TYPE` | Storage backend: `in-memory`, `filesystem`, `supabase`, `cloudflare-kv/r2/d1` | `in-memory` |\n| `OTEL_ENABLED` | Enable OpenTelemetry | `false` |\n| `OTEL_EXPORTER_OTLP_ENDPOINT` | OTLP exporter endpoint | none |\n| `WORLDBANK_API_BASE_URL` | World Bank Indicators API base URL override | `https://api.worldbank.org/v2` |\n| `WORLDBANK_PIP_BASE_URL` | Poverty and Inequality Platform API base URL override | `https://api.worldbank.org/pip/v1` |\n| `WORLDBANK_PROJECTS_BASE_URL` | Projects API base URL override | `https://search.worldbank.org/api/v3` |\n| `WORLDBANK_DEFAULT_PER_PAGE` | Default page size for list/search/data operations | `50` |\n| `WORLDBANK_CATALOG_CACHE_TTL_MS` | Lifetime of the in-process reference caches — the indicator catalog behind keyword-only search and the aggregate-code set behind `isAggregate`; `0` disables both | `3600000` |\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`). Nine tools covering topics, sources, countries, indicators, data, poverty, and projects. |\n| `src/mcp-server/resources` | Resource definitions. Indicator and country metadata resources. |\n| `src/services/worldbank` | World Bank Indicators API service layer — API client and domain types. |\n| `src/services/pip` | Poverty and Inequality Platform API service layer — separate client and domain types. |\n| `src/services/projects` | Projects API service layer — separate client and domain types. |\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/worldbank-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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