openapi: 3.0.3
info:
  title: Congress.gov Bills Committees API
  description: The Congress.gov API provides programmatic access to congressional data from the Library of Congress. It is a REST API offering machine-readable data covering bills, amendments, congressional records, committees, members, nominations, treaties, and other collections. An API key is required for access. Version 3 is the current stable release.
  version: v3
  contact:
    url: https://www.loc.gov/apis/additional-apis/congress-dot-gov-api/
  license:
    name: US Government Work
    url: https://www.usa.gov/government-works
servers:
- url: https://api.congress.gov/v3
  description: Congress.gov API v3 Production Server
security:
- ApiKeyQuery: []
tags:
- name: Committees
  description: Congressional committees
paths:
  /committee/{congress}/{chamber}:
    get:
      operationId: listCommittees
      summary: List Committees
      description: Returns a list of congressional committees for a specific Congress and chamber.
      tags:
      - Committees
      parameters:
      - $ref: '#/components/parameters/congressParam'
      - name: chamber
        in: path
        description: Chamber (House, Senate, or Joint)
        required: true
        schema:
          type: string
          enum:
          - house
          - senate
          - joint
      - $ref: '#/components/parameters/apiKeyParam'
      - $ref: '#/components/parameters/formatParam'
      - $ref: '#/components/parameters/limitParam'
      - $ref: '#/components/parameters/offsetParam'
      responses:
        '200':
          description: List of committees
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CommitteeListResponse'
  /committee/{chamber}/{systemCode}:
    get:
      operationId: getCommittee
      summary: Get Committee Details
      description: Returns details for a specific committee by system code.
      tags:
      - Committees
      parameters:
      - name: chamber
        in: path
        description: Chamber (house or senate)
        required: true
        schema:
          type: string
      - name: systemCode
        in: path
        description: Unique committee system code
        required: true
        schema:
          type: string
      - $ref: '#/components/parameters/apiKeyParam'
      - $ref: '#/components/parameters/formatParam'
      responses:
        '200':
          description: Detailed committee information
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CommitteeDetailResponse'
        '404':
          description: Committee not found
  /committee/{chamber}/{systemCode}/bills:
    get:
      operationId: getCommitteeBills
      summary: Get Committee Bills
      description: Returns bills referred to a specific committee.
      tags:
      - Committees
      parameters:
      - name: chamber
        in: path
        required: true
        schema:
          type: string
      - name: systemCode
        in: path
        required: true
        schema:
          type: string
      - $ref: '#/components/parameters/apiKeyParam'
      - $ref: '#/components/parameters/formatParam'
      - $ref: '#/components/parameters/limitParam'
      - $ref: '#/components/parameters/offsetParam'
      responses:
        '200':
          description: Bills referred to the committee
          content:
            application/json:
              schema:
                type: object
  /committee/{chamber}/{systemCode}/reports:
    get:
      operationId: getCommitteeReports
      summary: Get Committee Reports
      description: Returns reports issued by a specific committee.
      tags:
      - Committees
      parameters:
      - name: chamber
        in: path
        required: true
        schema:
          type: string
      - name: systemCode
        in: path
        required: true
        schema:
          type: string
      - $ref: '#/components/parameters/apiKeyParam'
      - $ref: '#/components/parameters/formatParam'
      - $ref: '#/components/parameters/limitParam'
      - $ref: '#/components/parameters/offsetParam'
      responses:
        '200':
          description: Reports from the committee
          content:
            application/json:
              schema:
                type: object
components:
  schemas:
    CommitteeDetailResponse:
      type: object
      properties:
        committee:
          type: object
          properties:
            systemCode:
              type: string
            name:
              type: string
            chamber:
              type: string
            committeeTypeCode:
              type: string
            subcommittees:
              type: array
              items:
                type: object
            reportsCount:
              type: integer
            billsCount:
              type: integer
    CommitteeListResponse:
      type: object
      properties:
        committees:
          type: array
          items:
            $ref: '#/components/schemas/CommitteeSummary'
        pagination:
          $ref: '#/components/schemas/Pagination'
    CommitteeSummary:
      type: object
      properties:
        systemCode:
          type: string
          description: Unique committee system code
        name:
          type: string
          description: Committee name
        chamber:
          type: string
          description: Chamber (House, Senate, or Joint)
        committeeTypeCode:
          type: string
          description: Type of committee
        url:
          type: string
    Pagination:
      type: object
      properties:
        count:
          type: integer
          description: Total number of records matching the query
        next:
          type: string
          description: URL for the next page of results
        prev:
          type: string
          description: URL for the previous page of results
  parameters:
    congressParam:
      name: congress
      in: path
      description: The Congress number (e.g., 118 for the 118th Congress)
      required: true
      schema:
        type: integer
        minimum: 1
    limitParam:
      name: limit
      in: query
      description: Number of results to return per request (max 250)
      required: false
      schema:
        type: integer
        minimum: 1
        maximum: 250
        default: 20
    formatParam:
      name: format
      in: query
      description: Response format
      required: false
      schema:
        type: string
        enum:
        - json
        - xml
        default: json
    offsetParam:
      name: offset
      in: query
      description: Starting record number for pagination
      required: false
      schema:
        type: integer
        minimum: 0
        default: 0
    apiKeyParam:
      name: api_key
      in: query
      description: API key for authentication
      required: false
      schema:
        type: string
  securitySchemes:
    ApiKeyQuery:
      type: apiKey
      in: query
      name: api_key
      description: API key required for all requests. Register at https://api.congress.gov/sign-up to obtain a key.