Resolve DOIs, search ~155M scholarly works, and fetch references via the Crossref REST API.
Crossref-mcp-server is an MCP integration. Resolve DOIs, search ~155M scholarly works, and fetch references via the Crossref REST API.
The registry lists a streamable-http connection at https://crossref.caseyjhand.com/mcp.
The published npm package is @cyanheads/crossref-mcp-server, version 0.4.2. Its declared MCP transport is stdio.
The package declares CROSSREF_MAILTO: Email for polite-pool User-Agent header — optional. Without: anonymous pool with stricter rate limits.; CROSSREF_BASE_URL: Override the Crossref API base URL. Defaults to https://api.crossref.org.; CROSSREF_TIMEOUT_MS: Per-request timeout in milliseconds.; MCP_LOG_LEVEL: Sets the minimum log level for output (e.g., 'debug', 'info', 'warn')..
The published npm package is @cyanheads/crossref-mcp-server, version 0.4.2. Its declared MCP transport is streamable-http.
The package declares MCP_TRANSPORT_TYPE: Selects the HTTP transport.; CROSSREF_MAILTO: Email for polite-pool User-Agent header — optional. Without: anonymous pool with stricter rate limits.; CROSSREF_BASE_URL: Override the Crossref API base URL. Defaults to https://api.crossref.org.; CROSSREF_TIMEOUT_MS: Per-request timeout in milliseconds.; MCP_HTTP_HOST: The hostname for the HTTP server.; MCP_HTTP_PORT: The port to run the HTTP server on.; MCP_HTTP_ENDPOINT_PATH: The endpoint path for the MCP server.; MCP_AUTH_MODE: Authentication mode to use: 'none', 'jwt', or 'oauth'.; MCP_LOG_LEVEL: Sets the minimum log level for output (e.g., 'debug', 'info', 'warn')..
Check the maintainer’s instructions for account access, authentication and the supported client configuration. Once connected, inspect the tools your client receives and try a small task that matches the server’s stated purpose. The registry description does not include a verified, complete tool list.
View the publisher’s registry entry · Project repository. This profile uses version 0.4.2 from the registry. Registration identifies the publisher namespace; it does not establish that this is a first-party integration for every service it connects.
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| Variable | Description | Required |
|---|---|---|
| CROSSREF_MAILTO | Email for polite-pool User-Agent header — optional. Without: anonymous pool with stricter rate limits. | Check documentation |
| CROSSREF_BASE_URL | Override the Crossref API base URL. Defaults to https://api.crossref.org. | Check documentation |
| CROSSREF_TIMEOUT_MS | Per-request timeout in milliseconds. | Check documentation |
| MCP_LOG_LEVEL | Sets the minimum log level for output (e.g., 'debug', 'info', 'warn'). | Check documentation |
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MCP server with tools to search, fetch, analyze, and report on scientific papers and datasets.
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