Library of Congress amendments API

openapi: 3.0.3
info:
  description: 'Congress.gov shares its application programming interface (API) with the public to ingest the Congressional data. <a href="sign-up/" target="_blank">Sign up for an API key</a> from api.data.gov that you can use to access web services provided by Congress.gov. To learn more, view our <a href="https://github.com/LibraryOfCongress/api.congress.gov/" target="_blank">GitHub repository</a>.

    '
  title: Congress.gov amendments API
  version: '3'
servers:
- url: /v3
security:
- ApiKeyAuth: []
tags:
- name: amendments
  description: Returns amendment data from the API
paths:
  /amendment:
    get:
      tags:
      - amendments
      summary: Returns a list of amendments sorted by date of latest action.
      description: Returns a list of amendments sorted by date of latest action.
      parameters:
      - $ref: '#/components/parameters/format'
      - $ref: '#/components/parameters/offset'
      - $ref: '#/components/parameters/limit'
      - $ref: '#/components/parameters/fromDateTime'
      - $ref: '#/components/parameters/toDateTime'
      responses:
        '200':
          description: Successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Amendment'
            application/xml:
              schema:
                $ref: '#/components/schemas/Amendment'
        '400':
          description: Invalid status value
  /amendment/{congress}:
    get:
      tags:
      - amendments
      summary: Returns a list of amendments filtered by the specified congress, sorted by date of latest action.
      description: Returns a list of amendments filtered by the specified congress, sorted by date of latest action.
      parameters:
      - $ref: '#/components/parameters/congress'
      - $ref: '#/components/parameters/format'
      - $ref: '#/components/parameters/offset'
      - $ref: '#/components/parameters/limit'
      - $ref: '#/components/parameters/fromDateTime'
      - $ref: '#/components/parameters/toDateTime'
      responses:
        '200':
          description: Successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Amendment'
            application/xml:
              schema:
                $ref: '#/components/schemas/Amendment'
        '400':
          description: Invalid status value
  /amendment/{congress}/{amendmentType}:
    get:
      tags:
      - amendments
      summary: Returns a list of amendments filtered by the specified congress and amendment type, sorted by date of latest action.
      description: Returns a list of amendments filtered by the specified congress and amendment type, sorted by date of latest action.
      parameters:
      - $ref: '#/components/parameters/congress'
      - $ref: '#/components/parameters/amendmentType'
      - $ref: '#/components/parameters/format'
      - $ref: '#/components/parameters/offset'
      - $ref: '#/components/parameters/limit'
      - $ref: '#/components/parameters/fromDateTime'
      - $ref: '#/components/parameters/toDateTime'
      responses:
        '200':
          description: Successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Amendment'
            application/xml:
              schema:
                $ref: '#/components/schemas/Amendment'
        '400':
          description: Invalid status value
  /amendment/{congress}/{amendmentType}/{amendmentNumber}:
    get:
      tags:
      - amendments
      summary: Returns detailed information for a specified amendment.
      description: Returns detailed information for a specified amendment.
      parameters:
      - $ref: '#/components/parameters/congress'
      - $ref: '#/components/parameters/amendmentType'
      - $ref: '#/components/parameters/amendmentNumber'
      - $ref: '#/components/parameters/format'
      - $ref: '#/components/parameters/offset'
      - $ref: '#/components/parameters/limit'
      - $ref: '#/components/parameters/fromDateTime'
      - $ref: '#/components/parameters/toDateTime'
      responses:
        '200':
          description: Successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AmendmentNumber'
            application/xml:
              schema:
                $ref: '#/components/schemas/AmendmentNumber'
        '400':
          description: Invalid status value
  /amendment/{congress}/{amendmentType}/{amendmentNumber}/actions:
    get:
      tags:
      - amendments
      summary: Returns the list of actions on a specified amendment.
      description: Returns the list of actions on a specified amendment.
      parameters:
      - $ref: '#/components/parameters/congress'
      - $ref: '#/components/parameters/amendmentType'
      - $ref: '#/components/parameters/amendmentNumber'
      - $ref: '#/components/parameters/format'
      - $ref: '#/components/parameters/offset'
      - $ref: '#/components/parameters/limit'
      responses:
        '200':
          description: Successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AmendmentActions'
            application/xml:
              schema:
                $ref: '#/components/schemas/AmendmentActions'
        '400':
          description: Invalid status value
  /amendment/{congress}/{amendmentType}/{amendmentNumber}/cosponsors:
    get:
      tags:
      - amendments
      summary: Returns the list of cosponsors on a specified amendment.
      description: Returns the list of cosponsors on a specified amendment.
      parameters:
      - $ref: '#/components/parameters/congress'
      - $ref: '#/components/parameters/amendmentType'
      - $ref: '#/components/parameters/amendmentNumber'
      - $ref: '#/components/parameters/format'
      - $ref: '#/components/parameters/offset'
      - $ref: '#/components/parameters/limit'
      responses:
        '200':
          description: Successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AmendmentCosponsors'
            application/xml:
              schema:
                $ref: '#/components/schemas/AmendmentCosponsors'
        '400':
          description: Invalid status value
  /amendment/{congress}/{amendmentType}/{amendmentNumber}/amendments:
    get:
      tags:
      - amendments
      summary: Returns the list of amendments to a specified amendment.
      description: Returns the list of amendments to a specified amendment.
      parameters:
      - $ref: '#/components/parameters/congress'
      - $ref: '#/components/parameters/amendmentType'
      - $ref: '#/components/parameters/amendmentNumber'
      - $ref: '#/components/parameters/format'
      - $ref: '#/components/parameters/offset'
      - $ref: '#/components/parameters/limit'
      responses:
        '200':
          description: Successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AmendmentAmendments'
            application/xml:
              schema:
                $ref: '#/components/schemas/AmendmentAmendments'
        '400':
          description: Invalid status value
  /amendment/{congress}/{amendmentType}/{amendmentNumber}/text:
    get:
      tags:
      - amendments
      summary: Returns the list of text versions for a specified amendment from the 117th Congress onwards.
      description: Returns the list of text versions for a specified amendment from the 117th Congress onwards.
      parameters:
      - $ref: '#/components/parameters/congress'
      - $ref: '#/components/parameters/amendmentType'
      - $ref: '#/components/parameters/amendmentNumber'
      - $ref: '#/components/parameters/format'
      - $ref: '#/components/parameters/offset'
      - $ref: '#/components/parameters/limit'
      responses:
        '200':
          description: Successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AmendmentText'
            application/xml:
              schema:
                $ref: '#/components/schemas/AmendmentText'
        '400':
          description: Invalid status value
components:
  schemas:
    AmendmentText:
      type: array
      items:
      - $ref: '#/components/schemas/textVersions'
    CoSponsor:
      type: object
      properties:
        bioguidId:
          type: string
          example: F000450
        district:
          type: integer
          example: 5
        firstName:
          type: string
          example: Virginia
        fullName:
          type: string
          example: Rep. Foxx, Virginia [R-NC-5]
        isOriginalCosponsor:
          type: boolean
          example: true
        lastName:
          type: string
          example: Foxx
        party:
          type: string
          example: R
        sponsorshipDate:
          type: string
          format: date
          example: '2021-05-11'
        state:
          type: string
          example: NC
        url:
          type: string
          format: url
          example: https://api.congress.gov/v3/member/F000450?format=json
    AmendmentActions:
      type: array
      items:
      - $ref: '#/components/schemas/amendmentActions'
    Amendment:
      type: object
      properties:
        congress:
          type: integer
          example: 117
        description:
          type: string
          example: Amendment changes the effective date of the bill to the date of enactment.
        latestAction:
          type: object
          properties:
            actionDate:
              type: string
              format: date
              example: '2021-08-08'
            actionTime:
              type: string
              format: time
              example: '12:00:00'
            text:
              type: string
              example: 'Amendment SA 2137 agreed to in Senate by Yea-Nay Vote. 69 - 28. Record Vote Number: 312.'
        number:
          type: string
          example: '2137'
        purpose:
          type: string
          example: In the nature of a substitute.
        type:
          type: string
          format: SAMDT
        updateDate:
          type: string
          format: date-time
          example: '2021-08-08T12:00:00Z'
        url:
          type: string
          format: url
          example: https://api.congress.gov/v3/amendment/117/samdt/2137?format=json
    formats:
      type: object
      properties:
        type:
          type: string
          example: Formatted Text
        url:
          type: string
          format: url
          example: https://www.congress.gov/117/bills/hr3076/BILLS-117hr3076enr.htm
    Sponsor:
      type: object
      properties:
        bioguideId:
          type: string
          example: G000555
        firstName:
          type: string
          example: Bill
        lastName:
          type: string
          example: Washington
        fullName:
          type: string
          example: Senator Bill Washington [I-NY]
        isByRequest:
          type: string
          example: N
        middleName:
          type: string
          example: J.
        party:
          type: string
          example: I
        state:
          type: string
          example: VA
        url:
          type: string
          format: url
          example: https://api.congress.gov/v3/member/G000555?format=json
    textVersions:
      type: object
      properties:
        date:
          type: string
          format: date
          example: '2022-02-18T16:38:41Z'
        formats:
          type: array
          items:
            $ref: '#/components/schemas/formats'
        type:
          type: string
          example: Enrolled Bill
    amendmentActions:
      type: object
      properties:
        actionDate:
          type: string
          format: date
          example: '2021-08-08'
        recordedVotes:
          type: array
          items:
            $ref: '#/components/schemas/recordedVote'
        sourceSystem:
          $ref: '#/components/schemas/sourceSystem'
        text:
          type: string
          example: 'Amendment SA 2137 agreed to in Senate by Yea-Nay Vote. 69 - 28. Record Vote Number: 312.'
        type:
          type: string
          example: Floor
    AmendmentAmendments:
      type: array
      items:
      - $ref: '#/components/schemas/Amendment'
    AmendmentNumber:
      type: object
      properties:
        actions:
          type: object
          properties:
            count:
              type: integer
              example: 1
            url:
              type: string
              format: url
              example: https://api.congress.gov/v3/amendment/117/samdt/4/actions?format=json
        amendedBill:
          $ref: '#/components/schemas/amendedBill'
        chamber:
          type: string
        congress:
          type: integer
          example: 117
        number:
          type: string
          example: '2137'
        sponsors:
          type: array
          items:
            $ref: '#/components/schemas/Sponsor'
        submittedDate:
          type: string
          format: date-time
          example: '2021-02-02T05:00:00Z'
        textVersions:
          $ref: '#/components/schemas/textVersion'
        type:
          type: string
          format: SAMDT
        updateDate:
          type: string
          format: date-time
          example: '2021-08-08T12:00:00Z'
    AmendmentCosponsors:
      type: array
      items:
      - $ref: '#/components/schemas/CoSponsor'
    sourceSystem:
      type: object
      properties:
        code:
          type: integer
          example: 0
        name:
          type: string
          example: Senate
    recordedVote:
      type: object
      properties:
        chamber:
          type: string
          example: Senate
        congress:
          type: integer
          example: 117
        date:
          type: string
          format: date-time
          example: '2021-08-08T12:00:00Z'
        rollNumber:
          type: integer
          example: 312
        sessionNumber:
          type: integer
          example: 1
        url:
          type: string
          format: url
          example: https://www.senate.gov/legislative/LIS/roll_call_votes/vote1171/vote_117_1_00312.xml
    amendedBill:
      type: object
      properties:
        congress:
          type: integer
          example: 117
        number:
          type: string
          example: '5'
        originChamber:
          type: string
          example: Senate
        originChamberCode:
          type: string
          example: S
        title:
          type: string
          example: A concurrent resolution setting forth the congressional budget for the United States Government for fiscal year 2021 and setting forth the appropriate budgetary levels for fiscal years 2022 through 2030.
        type:
          type: string
          example: SCONRES
        updateDateIncludingText:
          type: string
          format: date
          example: '2025-04-07'
        url:
          type: string
          format: url
          example: https://api.congress.gov/v3/bill/117/sconres/5?format=json
    textVersion:
      type: object
      properties:
        count:
          type: integer
          example: 1
        url:
          type: string
          format: url
          example: https://api.congress.gov/v3/amendment/117/samdt/4/text?format=json
  parameters:
    amendmentNumber:
      name: amendmentNumber
      in: path
      description: The amendment’s assigned number. For example, the value can be 2137.
      required: true
      schema:
        type: string
    amendmentType:
      name: amendmentType
      in: path
      description: The type of amendment. Value can be hamdt, samdt, or suamdt.
      required: true
      schema:
        type: string
    congress:
      name: congress
      in: path
      description: The congress number. For example, can be 117.
      required: true
      schema:
        type: integer
        format: int32
    limit:
      name: limit
      in: query
      description: The number of records returned. The maximum limit is 250.
      required: false
      schema:
        type: integer
    offset:
      name: offset
      in: query
      description: The starting record returned. 0 is the first record.
      required: false
      schema:
        type: integer
    format:
      name: format
      in: query
      description: The data format. Value can be xml or json.
      required: false
      schema:
        type: string
        default: xml
        enum:
        - xml
        - json
    fromDateTime:
      name: fromDateTime
      in: query
      description: 'The starting timestamp to filter by update date. Use format: YYYY-MM-DDT00:00:00Z.'
      required: false
      schema:
        type: string
    toDateTime:
      name: toDateTime
      in: query
      description: 'The ending timestamp to filter by update date. Use format: YYYY-MM-DDT00:00:00Z.'
      required: false
      schema:
        type: string
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: query
      name: api_key