gov.fec-committee

Search US federal political committees (PACs, super PACs, party committees, candidate principal committees, leadership PACs, etc.) via the OpenFEC API. Filter by q (name match), committee ID, candidate ID (returns committees linked to that candidate), committee type (P=Presidential | S=Senate | H=House | X=Independent expenditure-only | Y=Party | Z=National Party non-federal), designation (A=Authorized | J=Joint fundraising | P=Principal | U=Unauthorized | B=Lobbyist/Registrant PAC), state, party, cycle, organization type (C=Corporation | L=Labor | M=Membership | T=Trade | V=Cooperative | W=Corp without stock). Returns FEC committee ID, name, type/designation/organization labels, state, party, treasurer, linked candidate IDs, cycles, affiliated-committee names, first/last file dates.

price

$0.0012 USDC per call

method

GET/api/gov/fec-committee

payment

x402 v2 · USDC on Base (EIP-3009) or Solana (SPL transfer)

auth

None. Sign the payment, retry with PAYMENT-SIGNATURE.

tier

Tier 0 — no paid upstream

Parameters

Name	Type	Description
`q`	string	min 1 chars · max 120 chars
`committeeId`	string	match ^C\d{8}$
`candidateId`	string	match ^[A-Z]\d[A-Z0-9]{7}$
`committeeType`	string	one of: P \| S \| H \| X \| Y \| Z \| N \| I \| O \| Q \| U \| V \| W \| D \| E
`designation`	string	one of: A \| J \| P \| U \| B \| D
`state`	string	min 2 chars · max 2 chars · match ^[A-Za-z]{2}$
`party`	string	match ^[A-Za-z]{3,4}$
`cycle`	integer	min 1980 · max 2100
`organizationType`	string	one of: C \| L \| M \| T \| V \| W
`perPage`	integer	min 1 · max 100
`page`	integer	min 1

Code samples

cURLbash

# 1. Probe with no auth → 402 envelope with PaymentRequirements
curl -sS 'https://2s.io/api/gov/fec-committee?q=example&committeeId=example&candidateId=example&committeeType=P&designation=A&state=xx&party=example&cycle=1980&organizationType=C&perPage=25&page=1'

# 2. Sign + retry with PAYMENT-SIGNATURE:
curl -sS 'https://2s.io/api/gov/fec-committee?q=example&committeeId=example&candidateId=example&committeeType=P&designation=A&state=xx&party=example&cycle=1980&organizationType=C&perPage=25&page=1' \
  -H 'PAYMENT-SIGNATURE: <base64-json-payload>'

# Or use the canonical runner (handles probe → sign → retry):
#   EVM_PRIVATE_KEY=0x... node --env-file=.env.local \
#     --experimental-strip-types scripts/x402-pay.ts \
#     'https://2s.io/api/gov/fec-committee?q=example&committeeId=example&candidateId=example&committeeType=P&designation=A&state=xx&party=example&cycle=1980&organizationType=C&perPage=25&page=1'

TypeScript / Node — @2sio/sdktypescript

import { TwoS } from '@2sio/sdk'

const client = new TwoS({
  privateKey: process.env.EVM_PRIVATE_KEY as `0x${string}`,
})

const result = await client.gov.fecCommittee({
  "q": "example",
  "committeeId": "example",
  "candidateId": "example",
  "committeeType": "P",
  "designation": "A",
  "state": "xx",
  "party": "example",
  "cycle": 1980,
  "organizationType": "C",
  "perPage": 25,
  "page": 1
})

console.log('endpoint:', result.endpoint)
console.log('cost:', result.costUsd, 'USDC')
console.log('tx:', result.settlement?.txHash)
console.log('data:', result.data)

Python — 2siopython

import os
from twosio import TwoS

client = TwoS(private_key=os.environ["EVM_PRIVATE_KEY"])

result = client.gov.fec_committee(q="example", committeeId="example", candidateId="example", committeeType="P", designation="A", state="xx", party="example", cycle=1980, organizationType="C", perPage=25, page=1)

print("endpoint:", result.endpoint)
print("cost:", result.cost_usd, "USDC")
print("tx:", (result.settlement or {}).get("tx_hash"))
print("data:", result.data)

MCP — Claude Desktop / AgentKit / any MCP hostjson

// 1. Add @2sio/mcp to your MCP host config (Claude Desktop example below).
//    EVM_PRIVATE_KEY funds x402 payments per call.

// claude_desktop_config.json
{
  "mcpServers": {
    "2sio": {
      "command": "npx",
      "args": ["-y", "@2sio/mcp"],
      "env": { "EVM_PRIVATE_KEY": "0x..." }
    }
  }
}

// 2. Once the server is running, agents call this tool via standard MCP:

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "gov.fec-committee",
    "arguments": {
      "q": "example",
      "committeeId": "example",
      "candidateId": "example",
      "committeeType": "P",
      "designation": "A",
      "state": "xx",
      "party": "example",
      "cycle": 1980,
      "organizationType": "C",
      "perPage": 25,
      "page": 1
    }
  }
}

Response

Field	Type	Description
`ok`	boolean	one of: true
`items`	array
`total`	integer	Total matching rows upstream; null when unknown.
`source`	object
`page`	object

Example response datajson

{
  "ok": true,
  "items": [
    {}
  ],
  "total": 1,
  "source": {
    "provider": "example",
    "url": "example",
    "license": "example"
  },
  "page": {
    "number": 1,
    "size": 1,
    "pages": 1
  }
}

Discovery

/api/directory — full catalog of every endpoint
/openapi.json — OpenAPI 3.1 spec (per-op x-payment-info, x402Payment security)
/.well-known/x402 — machine-readable service descriptor for x402-aware crawlers
/.well-known/mcp/server-card.json — MCP SEP-1649 server card
/llms.txt — plain-text manifest for LLM ingestion

2s.io is x402-native. Every call is paid per-request from a USDC-funded EVM wallet on Base — no signup, no API keys, no monthly fees. Source code: github.com/2s-io/sdk.