# x402-factory House Control Next Election Evergreen Probability

> x402-factory House Control Next Election Evergreen Probability is a paid API for AI agents from x402-factory.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Returns the live aggregated probability of which party controls the House after the next election, always resolving to the current active market instance and rolling forward automatically.

## Facts

- Endpoint: GET https://x402-factory.com/v1/evergreen/house-control-next-election
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-factory-house-control-next-election-evergreen-probability-0f24f077
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7g8ILt30DWQfuccy8mAKf

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 x402-factory-house-control-next-election-evergreen-probability-0f24f077
```

Example prompt: What's the current prediction market probability that Republicans or Democrats control the House after the next election, and has it moved in the last hour?

## When to prefer this

Choose this endpoint when you need a stable, evergreen URL that always points to the next House election probability without tracking slug changes yourself. Prefer it over building your own Kalshi/Polymarket aggregation when you want cross-venue divergence signals and automatic market rollover. Ideal for dashboards, newsletters, or agents that need a single consistent URL for recurring election coverage.

## Known failure modes

- No active market found: may return null or empty data if no current House control market is live on either venue
- Stale data: if upstream prediction market APIs are delayed, probability and last_move_1h may lag real-time
- Payment failure: $0.02 USDC x402 payment not processed results in 402 response
- High divergence: per-venue implied_p values may differ significantly, requiring manual interpretation

## How this service works

Live probability: Who controls the House after the next election? — Stable evergreen URL for a recurring question: Who controls the House after the next election? Auto-resolves to the current market instance and rolls forward on resolution, so the answer is always about the next occurrence. Response adds current_slug and rolls_to_next_at to the standard probability shape.

## Output

Returns a normalized probability (0–1) for House control aggregated across Kalshi and Polymarket, per-venue implied probabilities with 24h volume and liquidity scores, divergence between venues, 1-hour price move, resolution date, resolution criteria summary, the current active market slug, and the timestamp at which this evergreen URL will roll forward to the next election instance.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "slug": "republicans-hold-house-midterms-2026-11",
   "topic": "house-control-next-election",
   "category": "politics",
   "question": "Will Republicans hold the House in the 2026 midterms?",
   "per_venue": [
    {
     "venue": "kalshi",
     "implied_p": 0.5965,
     "market_id": "KXREPUBLICANSHOL",
     "volume_24h_usd": 198477.06,
     "liquidity_score": 0.931
    },
    {
     "venue": "polymarket",
     "implied_p": 0.5702,
     "market_id": "republicans-hold-house-midterms-2026-11",
     "volume_24h_usd": 227554.59,
     "liquidity_score": 0.948
    }
   ],
   "divergence": 0.0263,
   "probability": 0.5818,
   "current_slug": "republicans-hold-house-midterms-2026-11",
   "last_move_1h": 0.0006,
   "topic_question": "Who controls the House after the next election?",
   "resolution_date": "2026-11-04",
   "rolls_to_next_at": "2026-11-04",
   "resolution_criteria_summary": "Resolves YES if Republicans win 218+ House seats per certified results."
  },
  "meta": {
   "docs": "https://x402-factory.com/docs/probability.evergreen.house-control-next-election",
   "sources": [
    "kalshi",
    "polymarket"
   ],
   "version": "1.0.0",
   "endpoint": "/v1/evergreen/house-control-next-election",
   "data_mode": "live",
   "freshness": "realtime",
   "request_id": "req_00000000",
   "generated_at": "2026-08-21T03:58:58.089Z"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-factory-house-control-next-election-evergreen-probability-0f24f077/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-factory.com](https://www.zero.xyz/host/x402-factory.com/llms.txt)