# likelihoods.io Polymarket Resolved Markets

> likelihoods.io Polymarket Resolved Markets is a paid API for AI agents from likelihoods.io, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).

Returns resolved Polymarket prediction markets with final outcomes, resolution timestamps, and trading volume data, optionally filtered by keyword.

## Facts

- Endpoint: GET https://likelihoods.io/api/tools/polymarket/resolved
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/likelihoods-io-c28a5109
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2AmvGGdZeP0P5z7UOzphw

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 likelihoods-io-c28a5109
```

Example prompt: Can you pull up all the resolved Polymarket markets related to artificial intelligence — I want to see which questions settled Yes or No and when they resolved?

## When to prefer this

Use this endpoint when you need historical resolution data for Polymarket prediction markets — specifically the final Yes/No/named outcomes and timestamps. Prefer this over the trending or overview endpoints when you need to verify what actually happened in closed markets rather than active market prices or current sentiment.

## Known failure modes

- No markets found matching the keyword filter — returns empty markets array
- Polymarket Gamma API unavailable — upstream data source error
- Invalid query parameter format — malformed request
- Payment failure — x402 micropayment of $0.01 USDC not processed correctly

## How this service works

Provides resolved Polymarket markets with final outcomes, resolution timestamps, and payout details.

## Output

A list of resolved Polymarket markets sourced from the Polymarket Gamma API, each containing the market slug, question text, final resolution (Yes/No or named outcome), resolution timestamp, trading volume, and liquidity (typically 0 after resolution).

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "q": "artificial intelligence"
  }
 }
}
```

## 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": {
      "q": {
       "type": "string",
       "description": "Optional keyword filter."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "source",
  "markets",
  "fetched_at"
 ],
 "properties": {
  "source": {
   "type": "string"
  },
  "markets": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "slug",
     "volume",
     "question",
     "liquidity",
     "resolution",
     "resolved_at"
    ],
    "properties": {
     "slug": {
      "type": "string"
     },
     "volume": {
      "type": "number"
     },
     "question": {
      "type": "string"
     },
     "liquidity": {
      "type": "number"
     },
     "resolution": {
      "type": "string"
     },
     "resolved_at": {
      "type": "string"
     }
    }
   }
  },
  "fetched_at": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/likelihoods-io-c28a5109/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from likelihoods.io](https://www.zero.xyz/host/likelihoods.io/llms.txt)