gov.fec-expenditures

Search FEC Schedule B — every itemized disbursement (spend, vendor payment, operating expenditure, contribution out, transfer) made by a federal political committee (>157M rows). Filter by committeeId, recipient name / city / state, disbursement purpose category (Administrative / Fundraising / Media / Polling / Salary / Travel / Operating / Contribution / Loan / etc.), description text, amount range, cycle, date range. Sort by date or amount. Every row carries: who got paid, when, how much, for what, with link to underlying PDF. The natural pair with /api/gov/fec-contributions for following the money on both sides of any federal committee.

price

$0.0012 USDC per call

method

GET/api/gov/fec-expenditures

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
`committeeId`	string	match ^C\d{8}$
`recipientName`	string	min 1 chars · max 120 chars
`recipientCity`	string	min 1 chars · max 80 chars
`recipientState`	string	min 2 chars · max 2 chars · match ^[A-Za-z]{2}$
`disbursementPurposeCategory`	string	min 1 chars · max 80 chars
`disbursementDescription`	string	min 1 chars · max 160 chars
`minAmount`	number	min 0
`maxAmount`	number	min 0
`twoYearTransactionPeriod`	integer	min 1980 · max 2100
`minDate`	string	match ^\d{4}-\d{2}-\d{2}$
`maxDate`	string	match ^\d{4}-\d{2}-\d{2}$
`perPage`	integer	min 1 · max 100
`page`	integer	min 1
`sortField`	string	one of: disbursement_date \| disbursement_amount
`sortDirection`	string	one of: asc \| desc

Code samples

cURLbash

# 1. Probe with no auth → 402 envelope with PaymentRequirements
curl -sS 'https://2s.io/api/gov/fec-expenditures?committeeId=example&recipientName=example&recipientCity=example&recipientState=xx&disbursementPurposeCategory=example&disbursementDescription=example&minAmount=0&maxAmount=0&twoYearTransactionPeriod=1980&minDate=2024-01-01&maxDate=2024-01-01&perPage=25&page=1&sortField=disbursement_date&sortDirection=asc'

# 2. Sign + retry with PAYMENT-SIGNATURE:
curl -sS 'https://2s.io/api/gov/fec-expenditures?committeeId=example&recipientName=example&recipientCity=example&recipientState=xx&disbursementPurposeCategory=example&disbursementDescription=example&minAmount=0&maxAmount=0&twoYearTransactionPeriod=1980&minDate=2024-01-01&maxDate=2024-01-01&perPage=25&page=1&sortField=disbursement_date&sortDirection=asc' \
  -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-expenditures?committeeId=example&recipientName=example&recipientCity=example&recipientState=xx&disbursementPurposeCategory=example&disbursementDescription=example&minAmount=0&maxAmount=0&twoYearTransactionPeriod=1980&minDate=2024-01-01&maxDate=2024-01-01&perPage=25&page=1&sortField=disbursement_date&sortDirection=asc'

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.fecExpenditures({
  "committeeId": "example",
  "recipientName": "example",
  "recipientCity": "example",
  "recipientState": "xx",
  "disbursementPurposeCategory": "example",
  "disbursementDescription": "example",
  "minAmount": 0,
  "maxAmount": 0,
  "twoYearTransactionPeriod": 1980,
  "minDate": "2024-01-01",
  "maxDate": "2024-01-01",
  "perPage": 25,
  "page": 1,
  "sortField": "disbursement_date",
  "sortDirection": "asc"
})

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_expenditures(committeeId="example", recipientName="example", recipientCity="example", recipientState="xx", disbursementPurposeCategory="example", disbursementDescription="example", minAmount=0, maxAmount=0, twoYearTransactionPeriod=1980, minDate="2024-01-01", maxDate="2024-01-01", perPage=25, page=1, sortField="disbursement_date", sortDirection="asc")

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-expenditures",
    "arguments": {
      "committeeId": "example",
      "recipientName": "example",
      "recipientCity": "example",
      "recipientState": "xx",
      "disbursementPurposeCategory": "example",
      "disbursementDescription": "example",
      "minAmount": 0,
      "maxAmount": 0,
      "twoYearTransactionPeriod": 1980,
      "minDate": "2024-01-01",
      "maxDate": "2024-01-01",
      "perPage": 25,
      "page": 1,
      "sortField": "disbursement_date",
      "sortDirection": "asc"
    }
  }
}

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.