API Reference
Lobbying Data
Search federal lobbying disclosures from the Senate Lobbying Disclosure Act (LDA) database.
Endpoint
GET /api/v1/lobbying/searchSearch federal lobbying disclosures from the Senate Lobbying Disclosure Act (LDA) database. Costs 2 credits per request.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
client_name | string | conditional | Client being represented (e.g., Pfizer, Amazon). At least one of client_name, registrant_name, or issue_code required. |
registrant_name | string | no | Lobbying firm or registrant name |
issue_code | string | no | General issue area code (e.g., HCR for Health Issues, DEF for Defense, TAX for Taxation) |
filing_year | string | no | Filing year (e.g., 2025) |
filing_type | string | no | Filing type: RR (Registration), Q1-Q4 (Quarterly Reports), etc. |
page | integer | no | Page number (default: 1) |
page_size | integer | no | Results per page, max 100 (default: 25) |
Example Request
# All lobbying filings for Pfizer as client
curl "https://filed.dev/api/v1/lobbying/search?client_name=Pfizer" \
-H "Authorization: Bearer fd_live_aBcDeFgH"
# Defense-related lobbying in 2025
curl "https://filed.dev/api/v1/lobbying/search?issue_code=DEF&filing_year=2025" \
-H "Authorization: Bearer fd_live_aBcDeFgH"import requests
headers = {"Authorization": "Bearer fd_live_aBcDeFgH"}
# By client name
resp = requests.get(
"https://filed.dev/api/v1/lobbying/search",
params={"client_name": "Pfizer"},
headers=headers
)
# By issue code and year
resp = requests.get(
"https://filed.dev/api/v1/lobbying/search",
params={"issue_code": "DEF", "filing_year": "2025"},
headers=headers
)const headers = { Authorization: "Bearer fd_live_aBcDeFgH" };
// By client name
const res = await fetch(
"https://filed.dev/api/v1/lobbying/search?client_name=Pfizer",
{ headers }
);
// By issue code and year
const res2 = await fetch(
"https://filed.dev/api/v1/lobbying/search?issue_code=DEF&filing_year=2025",
{ headers }
);req, _ := http.NewRequest("GET",
"https://filed.dev/api/v1/lobbying/search?client_name=Pfizer", nil)
req.Header.Set("Authorization", "Bearer fd_live_aBcDeFgH")
resp, _ := http.DefaultClient.Do(req)Response
{
"data": [
{
"filingId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
"filingDate": "2026-03-17T00:00:00Z",
"filingType": "1st Quarter - Report",
"filingYear": 2026,
"filingPeriod": "1st Quarter (Jan 1 - Mar 31)",
"registrant": { "name": "PFIZER INC", "id": 24976 },
"client": {
"name": "PFIZER INC",
"id": 24976,
"generalDescription": "Pharmaceutical manufacturer"
},
"income": 2890000,
"expenses": null,
"lobbyingActivities": [
{
"issueCode": "HCR",
"issueDescription": "Health Issues",
"description": "Issues related to drug pricing and Medicare Part D"
}
],
"documentUrl": "https://lda.senate.gov/filings/public/filing/..."
}
],
"meta": {
"totalCount": 1730,
"page": 1,
"pageSize": 25,
"hasNext": true,
"source": "Senate Office of Public Records (LDA)"
}
}Try It
Test this endpoint in the Playground.