# x402-factory US-China Tariff Change This Quarter

> x402-factory US-China Tariff Change This Quarter is a paid API for AI agents from x402-factory.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-13).

Returns the live prediction-market probability that the US and China will announce a tariff reduction deal within the current quarter, aggregated from Polymarket and Kalshi.

## Facts

- Endpoint: GET https://x402-factory.com/v1/evergreen/us-china-tariff-change-this-quarter
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-factory-us-china-tariff-change-this-quarter-cc563e7b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eqro5OzChMr9lAlEO-0nc

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-us-china-tariff-change-this-quarter-cc563e7b
```

Example prompt: What are the current prediction market odds that the US and China will announce a tariff reduction deal this quarter — pull the live probability from Polymarket and Kalshi?

## When to prefer this

Choose this endpoint when you need a single, normalized, real-time probability estimate on US-China tariff policy change aggregated across multiple prediction markets. It is preferable to calling Polymarket or Kalshi APIs directly because it handles cross-venue normalization, volume weighting, and provides a stable evergreen URL that rolls to the next quarter automatically. Best suited for agents that need a quick, machine-readable tariff-risk signal without scraping or parsing raw market data.

## Known failure modes

- HTTP 402 returned if no X-PAYMENT header is provided — response body contains USDC payment requirements for retry
- Payment amount mismatch or invalid X-PAYMENT header results in payment rejection
- Underlying venue (Polymarket/Kalshi) market may not yet exist for next quarter's slug, returning stale or missing data
- Rate limiting or network timeout if payment facilitator is congested
- Market may resolve and roll to next slug at resolution_date, causing brief data gap

## How this service works

Paid data APIs for AI agents: prediction-market analytics, weather intelligence, weather×market edge signals, and SEC/gov data. Paid endpoints use the x402 protocol (HTTP 402 + USDC on Base): call without payment to receive requirements, retry with an X-PAYMENT header. Machine-readable catalog: /llms.txt. Per-endpoint docs: /docs/{id}.

## Output

A JSON object containing the aggregated implied probability (e.g. 0.29) that the US and China will announce a tariff reduction deal within the current quarter, sourced from Polymarket and Kalshi. Includes per-venue breakdown (market ID, 24h volume, liquidity score), 1-hour price movement, resolution date, rolling schedule, resolution criteria summary, and request metadata (generated timestamp, data freshness mode, docs URL).

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "slug": "us-china-tariff-deal-2026-10",
   "topic": "us-china-tariff-change-this-quarter",
   "category": "economics",
   "question": "Will the US and China announce a tariff reduction deal by October 31?",
   "per_venue": [
    {
     "venue": "polymarket",
     "implied_p": 0.2917,
     "market_id": "us-china-tariff-deal-2026-10",
     "volume_24h_usd": 189792.42,
     "liquidity_score": 0.917
    }
   ],
   "divergence": 0,
   "probability": 0.2917,
   "current_slug": "us-china-tariff-deal-2026-10",
   "last_move_1h": -0.0053,
   "topic_question": "Will US-China tariffs change this quarter?",
   "resolution_date": "2026-10-31",
   "rolls_to_next_at": "2026-10-31",
   "resolution_criteria_summary": "Resolves YES on a joint or official announcement reducing tariffs on $50B+ of goods."
  },
  "meta": {
   "docs": "https://x402-factory.com/docs/probability.evergreen.us-china-tariff-change-this-quarter",
   "sources": [
    "kalshi",
    "polymarket"
   ],
   "version": "1.0.0",
   "endpoint": "/v1/evergreen/us-china-tariff-change-this-quarter",
   "data_mode": "live",
   "freshness": "realtime",
   "request_id": "req_00000000",
   "generated_at": "2026-08-21T03:58:58.099Z"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-factory-us-china-tariff-change-this-quarter-cc563e7b/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)