# US Congressional Committee Lookup (Congress.gov via 2s.io)

> US Congressional Committee Lookup (Congress.gov via 2s.io) is a paid API for AI agents from 2s.io, paid per call via x402, $0.0012/call, status unknown (last checked 2026-09-14).

Lists or looks up US Congressional committees from the Library of Congress Congress.gov, supporting single-committee detail retrieval by system code or filtered listing by congress number and chamber.

## Facts

- Endpoint: GET https://2s.io/api/gov/congress-committee
- Price: $0.0012/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-1b5f8c96
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Gp8-3bC0ZKYmsuT1PwuVu

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-1b5f8c96
```

Example prompt: Can you pull up the full details for the House Committee on Transportation and Infrastructure — its members, subcommittees, hearings, and jurisdiction? The system code is hspw00.

## When to prefer this

Use this endpoint when you need structured, authoritative data about US Congressional committees sourced directly from the Library of Congress Congress.gov. Ideal for civics research, legislative tracking, government transparency tools, or any agent workflow that needs to identify committee membership, jurisdictions, hearings, or subcommittee structures. Prefer this over generic web search when you need machine-readable, paginated committee data.

## Known failure modes

- Invalid or unknown systemCode returns 404 or empty result
- Invalid chamber value (not house/senate/joint) returns validation error
- Congress number out of range returns empty list
- Exceeding limit maximum of 250 returns validation error
- Network or upstream Congress.gov API unavailability returns 5xx error

## How this service works

List or look up US Congressional committees (Library of Congress Congress.gov). Pass systemCode (e.g. "hspw00") to fetch a single committee with full detail (members, subcommittees, history, hearings, jurisdiction). Or filter list by congress + chamber (house | senate | joint). Standard system codes follow chamber prefix + abbreviation + suffix convention.

## Output

Returns either a paginated list of congressional committees (with names, system codes, and chamber) when filtering, or a single committee's full profile including members, subcommittees, history, hearings, and jurisdiction when a systemCode is provided.

## 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": {
      "limit": {
       "type": "integer",
       "default": 25,
       "maximum": 250,
       "minimum": 1
      },
      "offset": {
       "type": "integer",
       "default": 0,
       "minimum": 0
      },
      "chamber": {
       "enum": [
        "house",
        "senate",
        "joint"
       ],
       "type": "string"
      },
      "congress": {
       "type": "integer"
      },
      "systemCode": {
       "type": "string",
       "description": "Single committee code (e.g. hspw00)."
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/2s-io-1b5f8c96/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)