{
  "x402Version": 2,
  "id": 3938,
  "slug": "3938",
  "resource": "https://data.greeneris.io/v1/predict/polymarket",
  "description": "Top open Polymarket prediction markets for a topic, ranked by 24h volume: event title, end date, and per-market outcome probabilities (0-1) with USD volume, from the public Gamma API (live on-chain odds). Query: ?tag=crypto|politics|economy|fed|... (any Polymarket tag slug) &limit=1-10 (default crypto, 5). JSON, 5min cache.",
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  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0x6ab8efe305cce67daa48c97bde29c04402822dff",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "10000",
      "maxTimeoutSeconds": 300
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        "input": {
          "method": "GET",
          "queryParams": {
            "limit": 3,
            "tag": "crypto"
          },
          "type": "http"
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            "events": [
              {
                "end_date": "2026-07-13T12:00:00Z",
                "markets": [
                  {
                    "probabilities": {
                      "No": 0.0015,
                      "Yes": 0.9985
                    },
                    "question": "Bitcoin above $105,000 on July 13?",
                    "volume_24h_usd": 297988.65
                  }
                ],
                "slug": "bitcoin-above-on-july-13-2026",
                "title": "Bitcoin above ___ on July 13?",
                "volume_24h_usd": 1801399.98
              }
            ],
            "source": "Polymarket Gamma API (live on-chain prediction-market odds)",
            "tag": "crypto"
          },
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                    "default": 5,
                    "description": "Events to return",
                    "maximum": 10,
                    "minimum": 1,
                    "type": "integer"
                  },
                  "tag": {
                    "default": "crypto",
                    "description": "Polymarket tag slug, e.g. crypto, politics, economy",
                    "type": "string"
                  }
                },
                "type": "object"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
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            "required": [
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              "method"
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              }
            },
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            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
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  "tags": [
    "bazaar"
  ],
  "sourceHost": "data.greeneris.io",
  "lastUpdated": "2026-08-27T15:18:07.828Z",
  "quality": {
    "calls30d": 1,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-08-27T15:18:07.609Z"
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  "verified": false,
  "featured": false,
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    "host": "data.greeneris.io",
    "manifest_name": "data.greeneris.io",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-09-18T22:00:31.484Z"
  }
}