# 2s.io US Federal Lobbying Disclosures Search

> 2s.io US Federal Lobbying Disclosures Search is a paid API for AI agents from 2s.io, paid per call via x402, $0.00288/call, status unknown (last checked 2026-09-14).

Search US Senate LDA lobbying filings by registrant, client, lobbyist, year, period, and filing type to retrieve income, issues, and official document links.

## Facts

- Endpoint: GET https://2s.io/api/gov/lobbying-filings
- Price: $0.00288/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/2s-io-us-federal-lobbying-disclosures-search-330f4015
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FMNsg1uyzQ0LWqehXZA6f

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability 2s-io-us-federal-lobbying-disclosures-search-330f4015
```

Example prompt: Pull up Senate LDA lobbying filings where Brownstein Farber is the registrant for the year 2023, second_quarter period — show me the first 10 results including reported income, client names, and lobbying issues covered.

## When to prefer this

Use this endpoint when you need structured, filterable access to US federal Senate LDA lobbying disclosure data — specifically to search by firm, client, individual lobbyist, year, quarter, or filing type. Prefer this over scraping senate.gov directly or using general web search when you need clean structured data with income figures, issue codes, and document links in a single API response.

## Known failure modes

- No results returned when registrant/client/lobbyist name string does not match any filing — try broader partial-match terms
- Invalid period enum value returns a 400 or empty response — must use exactly: first_quarter, second_quarter, third_quarter, fourth_quarter, mid_year, or year_end
- Year out of range (before 1999 or after 2030) rejected by schema validation
- pageSize exceeding 25 rejected — maximum is 25 per request
- Upstream Senate LDA data source unavailable causes service errors

## How this service works

Search US federal lobbying disclosures (Senate LDA filings) — who lobbies for whom, on what issues, for how much. Filter by registrant (lobbying firm name), client (organization being represented), lobbyist (individual name), year, period (first_quarter|second_quarter|third_quarter|fourth_quarter|mid_year|year_end), and type (e.g. RR=registration, Q1-Q4=quarterly reports). Each filing: type, year/period, reported income or expenses (USD), registrant + client (id/name/description/state), lobbying issues (code + description), lobbyist count, official document URL, posted timestamp. Money-in-politics, journalism, and policy-intelligence staple. Public federal data.

## Output

A paginated list of lobbying filing records, each containing: filing type code, year, period, reported income or expenses in USD, registrant details (id, name, state), client details (id, name, description, state), a list of lobbying issues with codes and descriptions, lobbyist count, a URL to the official Senate LDA document, and a posted timestamp.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "page": 1,
   "year": 2023,
   "period": "second_quarter",
   "pageSize": 10,
   "registrant": "Brownstein"
  }
 }
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "queryParams"
   ],
   "properties": {
    "type": {
     "const": "http"
    },
    "method": {
     "const": "GET"
    },
    "queryParams": {
     "properties": {
      "page": {
       "type": "integer",
       "default": 1,
       "minimum": 1
      },
      "type": {
       "type": "string",
       "description": "Filing type code, e.g. RR, Q1, Q2."
      },
      "year": {
       "type": "integer",
       "maximum": 2030,
       "minimum": 1999
      },
      "client": {
       "type": "string",
       "description": "Client organization name (partial match)."
      },
      "period": {
       "enum": [
        "first_quarter",
        "second_quarter",
        "third_quarter",
        "fourth_quarter",
        "mid_year",
        "year_end"
       ],
       "type": "string"
      },
      "lobbyist": {
       "type": "string",
       "description": "Individual lobbyist name."
      },
      "pageSize": {
       "type": "integer",
       "default": 10,
       "maximum": 25,
       "minimum": 1
      },
      "registrant": {
       "type": "string",
       "description": "Lobbying firm name (partial match)."
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/2s-io-us-federal-lobbying-disclosures-search-330f4015/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 2s.io](https://www.zero.xyz/host/2s.io/llms.txt)