openapi: 3.0.1
info:
  title: US Senate Lobbying Disclosure Act (LDA) Clients Constants API
  description: The Senate Lobbying Disclosure Act (LDA) REST API provides public access to lobbying filings, registrations, quarterly activity reports (LD-2), and semi-annual contribution reports (LD-203). An optional API key increases the rate limit from 15 to 120 requests per minute.
  version: '1.0'
  contact:
    name: Senate Office of Public Records
    email: lobby@sec.senate.gov
    url: https://lda.senate.gov/api/
servers:
- url: https://lda.senate.gov/api/v1
security:
- ApiKeyAuth: []
- {}
tags:
- name: Constants
  description: Reference data — filing types, issue codes, government entities, etc.
paths:
  /constants/filing/filingtypes/:
    get:
      tags:
      - Constants
      operationId: getFilingTypes
      summary: Get Filing Type Codes
      description: Returns all LDA filing type codes and their descriptions.
      parameters:
      - name: format
        in: query
        schema:
          type: string
          enum:
          - json
          default: json
      responses:
        '200':
          description: Filing type codes
          content:
            application/json:
              schema:
                type: array
                items:
                  type: object
  /constants/filing/lobbyingactivityissues/:
    get:
      tags:
      - Constants
      operationId: getLobbyingIssues
      summary: Get Lobbying Activity Issue Codes
      description: Returns all issue area codes used to categorize lobbying activities.
      parameters:
      - name: format
        in: query
        schema:
          type: string
          enum:
          - json
          default: json
      responses:
        '200':
          description: Issue codes list
          content:
            application/json:
              schema:
                type: array
                items:
                  type: object
  /constants/filing/governmententities/:
    get:
      tags:
      - Constants
      operationId: getGovernmentEntities
      summary: Get Government Entity Codes
      description: Returns all government entity codes for lobbied agencies and bodies.
      parameters:
      - name: format
        in: query
        schema:
          type: string
          enum:
          - json
          default: json
      responses:
        '200':
          description: Government entity codes
          content:
            application/json:
              schema:
                type: array
                items:
                  type: object
  /constants/general/countries/:
    get:
      tags:
      - Constants
      operationId: getCountries
      summary: Get Country Codes
      description: Returns country code reference data.
      security: []
      responses:
        '200':
          description: Country codes
          content:
            application/json:
              schema:
                type: array
                items:
                  type: object
  /constants/general/states/:
    get:
      tags:
      - Constants
      operationId: getStates
      summary: Get US State Codes
      description: Returns US state code reference data.
      security: []
      responses:
        '200':
          description: State codes
          content:
            application/json:
              schema:
                type: array
                items:
                  type: object
components:
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: Authorization
      description: 'Token-based auth. Format: ''Token YOUR_API_KEY'''