NCBI E-Utilities API — Fetch

NCBI E-Utilities API — Fetch. 2 operations. Lead operation: Fetch Records. Self-contained Naftiko capability covering one United States National Library Of Medicine business surface.

Run with Naftiko United States National Library Of MedicineFetch

What You Can Do

GET
Fetchrecords — Fetch Records
/v1/efetch-fcgi
GET
Getsummaries — Get Document Summaries
/v1/esummary-fcgi

MCP Tools

fetch-records

Fetch Records

read-only idempotent
get-document-summaries

Get Document Summaries

read-only idempotent

Capability Spec

ncbi-e-utilities-fetch.yaml Raw ↑
naftiko: 1.0.0-alpha2
info:
  label: NCBI E-Utilities API — Fetch
  description: 'NCBI E-Utilities API — Fetch. 2 operations. Lead operation: Fetch Records. Self-contained Naftiko capability
    covering one United States National Library Of Medicine business surface.'
  tags:
  - United States National Library Of Medicine
  - Fetch
  created: '2026-05-19'
  modified: '2026-05-19'
binds:
- namespace: env
  keys:
    UNITED_STATES_NATIONAL_LIBRARY_OF_MEDICINE_API_KEY: UNITED_STATES_NATIONAL_LIBRARY_OF_MEDICINE_API_KEY
capability:
  consumes:
  - type: http
    namespace: ncbi-e-utilities-fetch
    baseUri: https://eutils.ncbi.nlm.nih.gov/entrez/eutils
    description: NCBI E-Utilities API — Fetch business capability. Self-contained, no shared references.
    resources:
    - name: efetch.fcgi
      path: /efetch.fcgi
      operations:
      - name: fetchrecords
        method: GET
        description: Fetch Records
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: db
          in: query
          type: string
          description: Target Entrez database
          required: true
        - name: id
          in: query
          type: string
          description: Comma-separated list of UIDs to retrieve
        - name: api_key
          in: query
          type: string
          description: NCBI API key
        - name: rettype
          in: query
          type: string
          description: Record type to return (e.g. abstract, medline, fasta, gb, docsum)
        - name: retmode
          in: query
          type: string
          description: Output format
        - name: retmax
          in: query
          type: integer
          description: Maximum number of records to retrieve
        - name: retstart
          in: query
          type: integer
          description: Starting index in the UID list
    - name: esummary.fcgi
      path: /esummary.fcgi
      operations:
      - name: getsummaries
        method: GET
        description: Get Document Summaries
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: db
          in: query
          type: string
          description: Target Entrez database
          required: true
        - name: id
          in: query
          type: string
          description: Comma-separated list of UIDs
        - name: api_key
          in: query
          type: string
          description: NCBI API key
        - name: retmode
          in: query
          type: string
    authentication:
      type: apikey
      key: api_key
      value: '{{env.UNITED_STATES_NATIONAL_LIBRARY_OF_MEDICINE_API_KEY}}'
      placement: query
  exposes:
  - type: rest
    namespace: ncbi-e-utilities-fetch-rest
    port: 8080
    description: REST adapter for NCBI E-Utilities API — Fetch. One Spectral-compliant resource per consumed operation, prefixed
      with /v1.
    resources:
    - path: /v1/efetch-fcgi
      name: efetch-fcgi
      description: REST surface for efetch.fcgi.
      operations:
      - method: GET
        name: fetchrecords
        description: Fetch Records
        call: ncbi-e-utilities-fetch.fetchrecords
        with:
          db: rest.db
          id: rest.id
          api_key: rest.api_key
          rettype: rest.rettype
          retmode: rest.retmode
          retmax: rest.retmax
          retstart: rest.retstart
        outputParameters:
        - type: object
          mapping: $.
    - path: /v1/esummary-fcgi
      name: esummary-fcgi
      description: REST surface for esummary.fcgi.
      operations:
      - method: GET
        name: getsummaries
        description: Get Document Summaries
        call: ncbi-e-utilities-fetch.getsummaries
        with:
          db: rest.db
          id: rest.id
          api_key: rest.api_key
          retmode: rest.retmode
        outputParameters:
        - type: object
          mapping: $.
  - type: mcp
    namespace: ncbi-e-utilities-fetch-mcp
    port: 9090
    transport: http
    description: MCP adapter for NCBI E-Utilities API — Fetch. One tool per consumed operation, routed inline through this
      capability's consumes block.
    tools:
    - name: fetch-records
      description: Fetch Records
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: ncbi-e-utilities-fetch.fetchrecords
      with:
        db: tools.db
        id: tools.id
        api_key: tools.api_key
        rettype: tools.rettype
        retmode: tools.retmode
        retmax: tools.retmax
        retstart: tools.retstart
      outputParameters:
      - type: object
        mapping: $.
    - name: get-document-summaries
      description: Get Document Summaries
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: ncbi-e-utilities-fetch.getsummaries
      with:
        db: tools.db
        id: tools.id
        api_key: tools.api_key
        retmode: tools.retmode
      outputParameters:
      - type: object
        mapping: $.