# Polymarket Prediction Market Odds Search

> Polymarket Prediction Market Odds Search is a paid API for AI agents from x402-services-production.up.railway.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Search Polymarket prediction markets by keyword and return crowd-sourced outcome probabilities, trading volume, and end dates for matching events

## Facts

- Endpoint: POST https://x402-services-production.up.railway.app/api/predict/odds
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/polymarket-prediction-market-odds-search-142d4304
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_A9kqLg87BRxMTHsODLOHr

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 polymarket-prediction-market-odds-search-142d4304 -d '<json body>'
```

Example prompt: Search Polymarket for prediction markets about 'Fed rate cut 2025' and show me the top 5 results with their current outcome probabilities and trading volume.

## When to prefer this

Use this endpoint when you need crowd-sourced implied probabilities for any real-world event (political, economic, sports, crypto) across many markets simultaneously via keyword search. Prefer this over the slug-based sibling endpoint when you don't know the exact market slug and need to discover relevant markets by topic.

## Known failure modes

- No markets found for the search query — returns empty list
- Query too vague returns unrelated markets
- Polymarket API unavailable — upstream fetch failure
- Invalid limit parameter type causes schema validation error
- Payment not received — 402 response blocking access

## How this service works

Prediction-market implied probabilities from Polymarket: search live event markets and get outcome probabilities, volume, and end date. Send { query, limit? }. Crowd-sourced odds for any event as a data feed.

## Output

Returns a list of matching Polymarket event markets including market titles, outcome probabilities (as percentages or decimals), cumulative trading volume, and market end/resolution dates — up to the requested limit

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "number",
   "description": "Max markets, default 10"
  },
  "query": {
   "type": "string",
   "description": "Search terms, e.g. 'bitcoin 100k'"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/polymarket-prediction-market-odds-search-142d4304/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-services-production.up.railway.app](https://www.zero.xyz/host/x402-services-production.up.railway.app/llms.txt)