openapi: 3.1.0
info:
  title: Library of Congress Chronicling America Bills Laws API
  description: The Chronicling America API exposes historic American newspapers digitized through the National Digital Newspaper Program, providing search and metadata access to newspaper pages, issues, and titles.
  version: 1.0.0
  contact:
    name: Library of Congress
    url: https://chroniclingamerica.loc.gov/about/api/
servers:
- url: https://chroniclingamerica.loc.gov
  description: Production
tags:
- name: Laws
paths:
  /law/{congress}:
    get:
      operationId: listLaws
      summary: List Laws
      tags:
      - Laws
      parameters:
      - name: congress
        in: path
        required: true
        schema:
          type: integer
      - $ref: '#/components/parameters/Format'
      - $ref: '#/components/parameters/Offset'
      - $ref: '#/components/parameters/Limit'
      responses:
        '200':
          description: Laws list
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/LawList'
components:
  schemas:
    LawList:
      type: object
      properties:
        bills:
          type: array
          items:
            $ref: '#/components/schemas/Bill'
        pagination:
          $ref: '#/components/schemas/Pagination'
    Bill:
      type: object
      properties:
        congress:
          type: integer
        number:
          type: string
        type:
          type: string
        title:
          type: string
        originChamber:
          type: string
        introducedDate:
          type: string
        latestAction:
          type: object
          properties:
            actionDate:
              type: string
            text:
              type: string
        url:
          type: string
          format: uri
    Pagination:
      type: object
      properties:
        count:
          type: integer
        next:
          type: string
        prev:
          type: string
  parameters:
    Format:
      name: format
      in: query
      schema:
        type: string
        enum:
        - json
        - xml
        default: json
    Limit:
      name: limit
      in: query
      schema:
        type: integer
        default: 20
        maximum: 250
    Offset:
      name: offset
      in: query
      schema:
        type: integer
        default: 0