# Polymarket Resolution Status Lookup

> Polymarket Resolution Status Lookup is a paid API for AI agents from x402-endpoints.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Returns whether a Polymarket prediction market has resolved, which outcome won, and the resolution source — by slug or condition ID, or lists recent resolved markets.

## Facts

- Endpoint: GET https://x402-endpoints.onrender.com/polymarket/resolution
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/polymarket-resolution-status-lookup-d66809d4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DC96D1TxUB25Ruqzbmk4z

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-resolution-status-lookup-d66809d4
```

Example prompt: Did the Polymarket market 'new-rihanna-album-before-gta-vi-926' resolve, and if so which outcome won? Use the slug to look it up.

## When to prefer this

Use this endpoint when you need to verify the final resolved outcome of a Polymarket market — i.e., which side won and whether the market is closed. This is distinct from live odds or price endpoints; it specifically answers 'did this market resolve and who won?' Use slug or condition_id for a specific market, or omit both to list recent resolutions.

## Known failure modes

- Unknown or invalid slug returns not found or empty result
- Invalid condition_id format returns an error
- Market not yet resolved returns open/unresolved status
- limit out of range (outside 1-50) may be rejected or clamped
- Gamma API upstream outage causes timeout or 5xx error
- Payment not included or insufficient USDC causes 402 rejection

## How this service works

Polymarket resolution status via Gamma API — market resolution, winning outcome and resolution source lookup by slug or condition id (or list recent resolved markets). Distinct from live odds: returns whether a market is closed and which outcome won. Coverage Polymarket markets.

## Output

Returns whether the specified Polymarket market is closed/resolved, the winning outcome, and the resolution source. When listing, returns up to 50 recently resolved markets with their outcomes and slugs.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "slug": {
       "type": "string",
       "description": "Market slug, e.g. 'new-rihanna-album-before-gta-vi-926'"
      },
      "limit": {
       "type": "integer",
       "description": "Max markets when listing resolved markets [1-50], e.g. 20"
      },
      "condition_id": {
       "type": "string",
       "description": "On-chain condition id, e.g. '0x1fad72...'"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "mode": "lookup",
  "cached": false,
  "market": {
   "slug": "new-rhianna-album-before-gta-vi-926",
   "active": true,
   "closed": false,
   "source": "Polymarket Gamma API (gamma-api.polymarket.com)",
   "end_date": "2026-07-31T12:00:00Z",
   "outcomes": [
    {
     "price": 0.52,
     "outcome": "Yes"
    },
    {
     "price": 0.48,
     "outcome": "No"
    }
   ],
   "question": "New Rihanna Album before GTA VI?",
   "timestamp": "2026-06-25T10:00:00Z",
   "disclaimer": "Indicative resolution status from Polymarket (on-chain indexed), not investment advice.",
   "closed_time": null,
   "condition_id": "0x1fad72fae204143ff1c3035e99e7c0f65ea8d5cd9bd1070987bd1a3316f772be",
   "winning_outcome": null,
   "resolution_source": null,
   "resolution_status": "open",
   "outcome_prices_raw": "[\"0.52\", \"0.48\"]",
   "uma_resolution_status": null
  },
  "source": "Polymarket Gamma API (gamma-api.polymarket.com)",
  "timestamp": "2026-06-25T10:00:00Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/polymarket-resolution-status-lookup-d66809d4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-endpoints.onrender.com](https://www.zero.xyz/host/x402-endpoints.onrender.com/llms.txt)