# BlockRun Polymarket Opinion Markets Feed

> BlockRun Polymarket Opinion Markets Feed is a paid API for AI agents from blockrun.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-16).

Retrieves opinion/prediction market data from Polymarket events via the BlockRun pay-per-call AI gateway, settled in USDC

## Facts

- Endpoint: GET https://blockrun.ai/api/v1/pm/opinion/markets
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockrun-polymarket-opinion-markets-feed-e9a71073
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_szPkxAmqm19f7oZxwk501

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 blockrun-polymarket-opinion-markets-feed-e9a71073
```

Example prompt: What are the current odds and market data on Polymarket opinion markets right now? Pull the latest prediction market data from BlockRun.

## When to prefer this

Prefer this endpoint when you need Polymarket opinion/prediction market data without managing a separate Polymarket API key, especially in agent workflows that already use x402 micropayment rails on Base or Solana. Ideal for AI agents that need a single unified gateway for market data calls billed per-use in USDC.

## Known failure modes

- Payment not made or insufficient USDC balance — returns 402 Payment Required
- Network or gateway timeout — returns 5xx error
- No matching market data found — returns empty data object
- Invalid request format — returns 400 Bad Request

## How this service works

List Opinion markets with filtering and sorting

## Output

Returns a JSON object containing Polymarket opinion market data, including market events, prices, outcomes, and related keyset data settled via USDC on Base or Solana — no separate Polymarket API key required.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "query": {
     "type": "object",
     "required": [],
     "properties": {}
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "example": {
     "type": "object",
     "properties": {
      "data": {
       "type": "object"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockrun-polymarket-opinion-markets-feed-e9a71073/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from blockrun.ai](https://www.zero.xyz/host/blockrun.ai/llms.txt)