US Senate

Senate Lobbying Disclosure Act (LDA) API

The Senate Lobbying Disclosure Act (LDA) REST API provides public access to lobbying disclosure filings, registrations, quarterly activity reports (LD-2), and semi-annual contribution reports (LD-203) submitted under the Lobbying Disclosure Act. Includes data on registrants, clients, lobbyists, and lobbying activities. An API key increases rate limits from 15 to 120 requests per minute.

GitHub OpenAPI

Documentation

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Documentation
https://lda.senate.gov/api/
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Documentation
https://lda.senate.gov/api/redoc/v1/

Specifications

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OpenAPI
https://raw.githubusercontent.com/api-evangelist/us-senate/refs/heads/main/openapi/us-senate-lda-openapi.yml

OpenAPI Specification

us-senate-lda-openapi.yml Raw ↑