Pubmed Mcp Server

Please install the `pubmed-mcp-server` MCP server into my current AI client (that's you).

Required prerequisites (do these first if not already done):
- **Install Node.js (for npx)** — Required if using the recommended npx-based local stdio setup. (https://nodejs.org/)

Optional prerequisites:
- Optional NCBI API key — Recommended for higher NCBI rate limits (10 req/s vs 3 req/s). (https://www.ncbi.nlm.nih.gov/account/settings/)

Canonical MCP server config (stdio transport):
- command: `npx`
- args: ["-y","@cyanheads/pubmed-mcp-server@latest"]
- required environment variables:
  - `MCP_TRANSPORT_TYPE`: Transport mode for the server. For local MCP client stdio usage, set to stdio. (example: `stdio`)
- optional environment variables:
  - `MCP_LOG_LEVEL`: Log level for server output. (example: `info`)
  - `NCBI_API_KEY`: NCBI API key for higher request rate limits. (example: `<your-ncbi-api-key>`)
  - `NCBI_ADMIN_EMAIL`: Contact email sent with NCBI requests, recommended by NCBI. (example: `<your-email>`)
  - `UNPAYWALL_EMAIL`: Contact email for Unpaywall. When set, full-text fetching can fall back to Unpaywall open-access copies for non-PMC DOIs. (example: `<your-email>`)
  - `EUROPEPMC_ENABLED`: Enable Europe PMC search tool and the full-text fallback chain. (example: `true`)
  - `EUROPEPMC_EMAIL`: Optional contact email sent with Europe PMC requests. (example: `<your-email>`)
  - `MCP_AUTH_MODE`: Authentication mode: none, jwt, or oauth. (example: `none`)
  - `MCP_GC_PRESSURE_INTERVAL_MS`: Opt-in Bun-only forced-GC pressure loop interval in milliseconds. (example: `60000`)
  - `LOGS_DIR`: Directory for log files (Node.js only). (example: `<your-logs-directory>`)
  - `STORAGE_PROVIDER_TYPE`: Storage backend type. (example: `in-memory`)
  - `NCBI_REQUEST_DELAY_MS`: Minimum gap between NCBI request starts in milliseconds. (example: `334`)
  - `NCBI_MAX_CONCURRENT`: Maximum concurrent in-flight NCBI requests. (example: `8`)
  - `NCBI_MAX_RETRIES`: Retry attempts for failed NCBI requests. (example: `6`)
  - `NCBI_TIMEOUT_MS`: Per-request HTTP timeout for NCBI calls in milliseconds. (example: `30000`)
  - `NCBI_TOTAL_DEADLINE_MS`: Total deadline across all retry attempts for one NCBI call, in milliseconds. (example: `60000`)
  - `UNPAYWALL_TIMEOUT_MS`: Per-request HTTP timeout for Unpaywall lookups and content fetches, in milliseconds. (example: `20000`)
  - `EUROPEPMC_REQUEST_DELAY_MS`: Minimum gap between Europe PMC request starts in milliseconds. (example: `200`)
  - `EUROPEPMC_MAX_RETRIES`: Retry attempts for failed Europe PMC requests. (example: `3`)
  - `EUROPEPMC_TIMEOUT_MS`: Per-request HTTP timeout for Europe PMC calls in milliseconds. (example: `20000`)
  - `OTEL_ENABLED`: Enable OpenTelemetry. (example: `false`)

Note: README also provides a public hosted Streamable HTTP endpoint at https://pubmed.caseyjhand.com/mcp and documents self-hosted HTTP mode, but the simplest portable local install path is stdio via npx. For hosted usage, point an MCP client at the published URL instead of running a local command.

Add this MCP server to my current client's config in the correct format for you. If you need secrets or credentials I haven't provided, ASK me — do not invent values or leave raw placeholders. After adding it, tell me how to verify the server is connected.