# Polymarket Live Odds Feed via X402-Broker

> Polymarket Live Odds Feed via X402-Broker is a paid API for AI agents from x402broker.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).

Fetches real-time live prediction market odds and probabilities from Polymarket via the X402-Broker meta-router

## Facts

- Endpoint: GET https://x402broker.com/v1/polymarket-live-odds-feed?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/polymarket-live-odds-feed-via-x402-broker-e1a8651a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ySxJQBIac1j8cWrZQxVrh

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-live-odds-feed-via-x402-broker-e1a8651a
```

Example prompt: Can you pull the current live Polymarket odds on the 2024 US presidential election — I want to see the latest probabilities from the prediction market feed?

## When to prefer this

Use this endpoint when you need real-time, live prediction market odds from Polymarket without setting up a direct Polymarket API integration. It is ideal for agents that already operate within the x402 micropayment ecosystem and want a pay-per-call, zero-setup way to access Polymarket data. Prefer this over direct Polymarket API calls when your agent pipeline uses x402 USDC micropayments and benefits from the broker's TDQS quality scoring and unified routing layer.

## Known failure modes

- Invalid or unsupported topic query parameter returns empty or null data
- Payment failure (insufficient USDC balance) returns 402 Payment Required
- Polymarket upstream unavailability results in stale or error response
- Malformed request without required 'type' and 'method' fields returns 400 Bad Request
- Rate limiting may occur under heavy query load

## How this service works

Universal B2A/A2A/MCP Meta-Router & Autonomous Tool Marketplace indexing 7,340+ live capabilities across x402 v2 (5-chain EVM USDC), IETF MPP, and L402 with TDQS quality scoring and zero-fee pass-through execution.

## Output

Returns a JSON object with a 'data' field containing live Polymarket odds/probabilities, a 'status' field confirming success, and an 'roi_proof' object indicating compression efficiency (e.g. compression_ratio_pct: 91.4). The data payload contains current market odds for the requested topic.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "POST"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "topic": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {},
  "status": "ok",
  "roi_proof": {
   "compression_ratio_pct": 91.4
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/polymarket-live-odds-feed-via-x402-broker-e1a8651a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402broker.com](https://www.zero.xyz/host/x402broker.com/llms.txt)