# Polymarket Markets List — mito.trade

> Polymarket Markets List — mito.trade is a paid API for AI agents from data.mito.trade, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns a paginated list of Polymarket prediction markets with on-chain data, filterable by category.

## Facts

- Endpoint: GET https://data.mito.trade/x402/v1/markets
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/polymarket-markets-list-mito-trade-83307bcd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ucDgg2lsrzg8GC85viyaO

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-markets-list-mito-trade-83307bcd
```

Example prompt: Show me the first 50 Polymarket prediction markets in the politics category — I want to browse what's currently available on-chain.

## When to prefer this

Use this endpoint when you need a comprehensive, paginated catalog of Polymarket prediction markets with on-chain provenance, especially when filtering by category or integrating market discovery into an automated agent workflow. Prefer over Polymarket's own REST API when you need x402 micropayment-native access or want on-chain indexed data from mito.trade's indexer.

## Known failure modes

- Payment not provided or insufficient USDC (402 Payment Required)
- Invalid category string returns empty results
- Offset beyond total count returns empty markets array
- Rate limiting if requests exceed allowed frequency
- Network errors on Polygon/Base/Arbitrum RPC layer causing stale or failed data

## How this service works

Polymarket prediction-market data API (x402 paid): wallet positions, trades, holders, market trades, klines, and markets. USDC on Polygon, Base, or Arbitrum.

## Output

A JSON object containing an array of Polymarket markets, the count of markets in this page, the total number of markets available, and the block number and timestamp of the on-chain data snapshot.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "limit": {
       "type": "string",
       "description": "Page size (default 100, max 1000)"
      },
      "offset": {
       "type": "string",
       "description": "Pagination offset"
      },
      "category": {
       "type": "string",
       "description": "Optional category filter (case-insensitive)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "count": {
       "type": "integer"
      },
      "total": {
       "type": "integer"
      },
      "markets": {
       "type": "array"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "block_number": 0,
   "block_timestamp": 0
  },
  "count": 0,
  "total": 0,
  "markets": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/polymarket-markets-list-mito-trade-83307bcd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from data.mito.trade](https://www.zero.xyz/host/data.mito.trade/llms.txt)