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Particle Pro Bill Sponsors
x402
Particle Pro Bill Sponsors is a paid API for AI agents from api.particle.pro, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Returns the primary sponsor and all cosponsors of a specific bill, including congress member details.
Price / call$0.01
Success—
StatusUnknown
How this service works
List bill sponsors. Returns the primary sponsor and all cosponsors of a bill with congress member details.
Output
A structured list containing the primary sponsor and all cosponsors of the specified bill, each entry including congress member details such as name, party, state, and role.
Example use cases
Track bill sponsorship for lobbying research
“Can you pull up all the sponsors and cosponsors for bill S-1260? I need to know which congress members are backing it and their details.”
Political alignment analysis for a bill
“Who sponsored and cosponsored the Infrastructure Investment and Jobs Act — I want to see which legislators are behind it and from which parties.”
Journalist researching legislative support
“I'm writing about HR-4521 — can you get me the full list of sponsors and cosponsors, including their congress member profiles?”
Technical details
Endpoint
GEThttps://api.particle.pro/v1/congress/bills/:id/sponsorsWhen to prefer
Use this endpoint when you need to identify who in Congress is sponsoring or supporting a specific bill by its ID, especially when you need structured congress member metadata for each sponsor. Prefer this over general legislative search endpoints when you already have a bill ID and need sponsor attribution data.
Side effects
- Invalid or non-existent bill ID returns a 404 or empty result
- Bill ID format mismatch causes a bad request error
- Payment not authorized results in a 402 payment required error
- Rate limiting may cause temporary 429 errors
- Bill exists but has no recorded cosponsors returns only the primary sponsor
Tags
x402
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