LegisMCP
Tools Reference

Senate Lobbying Disclosures

5 tools for accessing Senate Lobbying Disclosures data. No additional API key required.

lobbying-search

Search lobbying disclosure filings to find out who is lobbying Congress, on what issues, and how much they're spending.

Parameters

NameTypeRequiredDescription
registrant_namestringoptionalName of the lobbying firm or registrant
client_namestringoptionalName of the client who hired the lobbyist
issue_codestringoptionalGeneral issue area code: HCR=Health, TAX=Taxation, DEF=Defense, ENV=Environment, ENG=Energy
filing_yearnumberoptionalYear the filing was submitted (e.g., 2025)
filing_typestringoptionalFiling type: 'Q1', 'Q2', 'Q3', 'Q4'
page_sizenumberoptionalNumber of results (max 25)

Example

lobbying-search(client_name: "Amazon", filing_year: 2025)

lobbying-filing-detail

Get full detail on a specific lobbying filing including every issue lobbied, legislative descriptions, and lobbyist names.

Parameters

NameTypeRequiredDescription
filing_uuidstringrequiredThe UUID of the lobbying filing from lobbying-search results

Example

lobbying-filing-detail(filing_uuid: "abc123-...")

lobbying-contributions

Search campaign contributions made by lobbyists — shows which lobbyists donated to which politicians.

Parameters

NameTypeRequiredDescription
filing_yearnumberoptionalYear the contribution filing was submitted
registrant_namestringoptionalName of the lobbying firm
lobbyist_namestringoptionalName of the individual lobbyist
page_sizenumberoptionalNumber of results (max 25)

Example

lobbying-contributions(filing_year: 2025)

lobbying-registrants

Search lobbying firms and organizations registered to lobby Congress.

Parameters

NameTypeRequiredDescription
namestringrequiredName of the lobbying firm or organization
page_sizenumberoptionalNumber of results (max 25)

Example

lobbying-registrants(name: "Akin Gump")

lobbying-lobbyists

Search individual lobbyists by name or firm.

Parameters

NameTypeRequiredDescription
namestringoptionalName of the lobbyist
firmstringoptionalName of the lobbying firm
page_sizenumberoptionalNumber of results (max 50)

Example

lobbying-lobbyists(firm: "Akin Gump")