# Particle Pro – List Committee Bills

> Particle Pro – List Committee Bills 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 a list of bills that have been referred to or acted upon by a specific U.S. congressional committee, identified by committee ID.

## Facts

- Endpoint: GET https://api.particle.pro/v1/congress/committees/:id/bills
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/particle-pro-list-committee-bills-4d09ec25
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_m1UJmaErDkSc63an9j3ka

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 particle-pro-list-committee-bills-4d09ec25
```

Example prompt: What bills have been referred to or acted upon by the Senate Judiciary Committee? Use its committee ID to pull the full list from Particle Pro.

## When to prefer this

Choose this endpoint when you need to enumerate legislation associated with a specific congressional committee — especially useful for legislative tracking, policy research, or monitoring committee activity. Prefer this over general bill search endpoints when the committee is the primary lookup key.

## Known failure modes

- Invalid or unknown committee ID returns a 404 or empty result
- Malformed committee ID format causes a 400 bad request
- Committee exists but has no associated bills, returning an empty list
- API authentication/payment failure ($0.01 USDC required per call via x402 protocol)
- Rate limiting or quota exceeded returns a 429 error

## How this service works

List committee bills. Returns bills that have been referred to or acted upon by this committee.

## Output

A list of bills associated with the specified committee, including bill titles, identifiers, and their referral or action status within that committee.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/particle-pro-list-committee-bills-4d09ec25/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.particle.pro](https://www.zero.xyz/host/api.particle.pro/llms.txt)