US House of Representatives roll-call votes, newest first by action date. Each record includes year + roll number, congress/session, vote question + type + result, action date/time, bill reference (legis_num), description, grand totals (yea/nay/present/not-voting), AND per-party breakdown (Republican/Democratic/Independent yea/nay/present/not-voting counts). Filters (all optional, AND-combined): year, congress, result substring, bill substring (legis_num ILIKE), since/until (action_date), limit + offset. Locally aggregated from clerk.house.gov XML feeds (refreshed daily by cron). Public-domain US government records.
/api/gov/house-votesPAYMENT-SIGNATURE.The house votes API is a pay-per-call gov endpoint built for AI agents and autonomous software. US House of Representatives roll-call votes, newest first by action date.
There is no signup and no API key. An agent (or any HTTP client) hits the endpoint, receives an x402 "402 Payment Required" challenge, signs a sub-cent USDC payment on Base or Solana, and retries — the data comes back on the paid request. That makes it a drop-in house votes data source for an agent tool-use loop, an MCP host, or a backend that needs gov data on demand without onboarding to yet another vendor portal.
| Name | Type | Description |
|---|---|---|
year | integer | Filter by year. Example: 2025. min 1990 · max 2099 |
congress | integer | Filter by Congress number. The 119th Congress = 2025-2026. min 100 · max 200 |
result | string | Filter by vote result (case-insensitive substring). Examples: "Passed", "Failed", "Agreed". min 2 chars · max 40 chars |
bill | string | Filter by bill reference (case-insensitive substring on legis_num). Examples: "H R 498", "H R 49", "S 1". min 2 chars · max 40 chars |
since | string | Earliest action date (YYYY-MM-DD). match ^\d{4}-\d{2}-\d{2}$ |
until | string | Latest action date (YYYY-MM-DD). match ^\d{4}-\d{2}-\d{2}$ |
limit | integer | Max records (1-100). Default 25. min 1 · max 100 |
offset | integer | Offset for pagination. Default 0. min 0 · max 100000 |
# 1. Probe with no auth → 402 envelope with PaymentRequirements curl -sS 'https://2s.io/api/gov/house-votes?year=1990&congress=100&result=xx&bill=xx&since=2024-01-01&until=2024-01-01&limit=25&offset=0' # 2. Sign + retry with PAYMENT-SIGNATURE: curl -sS 'https://2s.io/api/gov/house-votes?year=1990&congress=100&result=xx&bill=xx&since=2024-01-01&until=2024-01-01&limit=25&offset=0' \ -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/house-votes?year=1990&congress=100&result=xx&bill=xx&since=2024-01-01&until=2024-01-01&limit=25&offset=0'
import { TwoS } from '@2sio/sdk'
const client = new TwoS({
privateKey: process.env.EVM_PRIVATE_KEY as `0x${string}`,
})
const result = await client.gov.houseVotes({
"year": 1990,
"congress": 100,
"result": "xx",
"bill": "xx",
"since": "2024-01-01",
"until": "2024-01-01",
"limit": 25,
"offset": 0
})
console.log('endpoint:', result.endpoint)
console.log('cost:', result.costUsd, 'USDC')
console.log('tx:', result.settlement?.txHash)
console.log('data:', result.data)import os
from twosio import TwoS
client = TwoS(private_key=os.environ["EVM_PRIVATE_KEY"])
result = client.gov.house_votes(year=1990, congress=100, result="xx", bill="xx", since="2024-01-01", until="2024-01-01", limit=25, offset=0)
print("endpoint:", result.endpoint)
print("cost:", result.cost_usd, "USDC")
print("tx:", (result.settlement or {}).get("tx_hash"))
print("data:", result.data)// 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.house-votes",
"arguments": {
"year": 1990,
"congress": 100,
"result": "xx",
"bill": "xx",
"since": "2024-01-01",
"until": "2024-01-01",
"limit": 25,
"offset": 0
}
}
}| Field | Type | Description |
|---|---|---|
ok | boolean | one of: true |
items | array | |
total | integer | Total matching rows upstream; null when unknown. |
source | object | |
meta | object |
{
"ok": true,
"items": [
{
"year": 1,
"roll": 1,
"congress": 1,
"session": "example",
"voteQuestion": "example",
"voteType": "example",
"voteResult": "example",
"actionDate": "example",
"actionTime": "example",
"legisNum": "example",
"voteDesc": "example",
"totals": {
"yea": 1,
"nay": 1,
"present": 1,
"notVoting": 1
},
"totalsByParty": {},
"sourceXmlUrl": "https://example.com"
}
],
"total": 1,
"source": {
"provider": "example",
"url": "example",
"license": "example"
},
"meta": {
"query": {
"year": 1,
"congress": 1,
"result": "example",
"bill": "example",
"since": "example",
"until": "example",
"limit": 1,
"offset": 1
},
"nextOffset": 1,
"previousOffset": 1
}
}