{
  "x402Version": 2,
  "id": 3285,
  "slug": "3285",
  "resource": "https://quotient-api-gateway.onrender.com/api/v1/markets",
  "description": "Use this to browse every prediction market Quotient tracks across Polymarket International, Polymarket US, Kalshi, and Limitless, with venue odds and quote provenance, available volume, resolution date, and forecast recency. Polymarket International and Kalshi fail closed when live pricing is unavailable; other venues label graph snapshots stale. Filter by venue or topic; the complete covered catalog returns in one response.",
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  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0xC3d01FD2F79d4c57aD106AB8ecc12a5dE24F97cB",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "5000",
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "bazaar": {
      "discoverable": true,
      "info": {
        "input": {
          "method": "GET",
          "queryParams": {
            "max_forecast_age": 48,
            "sort": "volume_desc",
            "topic": "oil"
          },
          "type": "http"
        },
        "output": {
          "example": {
            "markets": [
              {
                "categories": [
                  "Commodities"
                ],
                "clarifications": null,
                "end_date": "2026-08-31T20:00:00Z",
                "event": {
                  "id": "KXGOLD-26AUG",
                  "slug": null,
                  "title": "Gold price in August"
                },
                "forecast_count": 1,
                "inDispute": false,
                "latest_forecast_at": "2026-08-08T14:30:00Z",
                "latest_forecast_delta": 0.03,
                "latest_forecast_refresh_reason": "price_move",
                "marketKey": "kalshi:KXGOLD-26AUG-T2500",
                "marketUrl": null,
                "market_odds": 0.46,
                "market_updated_at": "2026-08-08T15:02:11Z",
                "nativeEventId": "KXGOLD-26AUG",
                "nativeMarketId": "KXGOLD-26AUG-T2500",
                "polymarketUrl": null,
                "question": "Will gold settle above $2,500 in August?",
                "quotientMarketId": "kalshi:KXGOLD-26AUG-T2500",
                "quotientUrl": "https://quotient.social/markets/kalshi%3AKXGOLD-26AUG-T2500",
                "seriesTicker": "KXGOLD",
                "signal_count": 0,
                "slug": null,
                "sourceUrl": null,
                "tags": [
                  "Commodities",
                  "Metals",
                  "Gold"
                ],
                "venue": "kalshi",
                "venue_quote": {
                  "freshness": "verified",
                  "market_id": "KXGOLD-26AUG-T2500",
                  "observed_at": "2026-08-31T12:00:00Z",
                  "quote_method": "midpoint",
                  "schema_version": "1",
                  "selected_probability": 0.46,
                  "venue": "kalshi",
                  "venue_timestamp": "2026-08-31T12:00:00Z",
                  "yes_ask": 0.46,
                  "yes_bid": 0.46,
                  "yes_last": null
                },
                "volume_24h": null
              }
            ],
            "venue_facets": [
              {
                "count": 1,
                "venue": "kalshi"
              }
            ]
          },
          "type": "json"
        }
      },
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              "queryParams": {
                "additionalProperties": false,
                "properties": {
                  "changed_within": {
                    "maximum": 168,
                    "minimum": 1,
                    "type": "integer"
                  },
                  "max_forecast_age": {
                    "default": 48,
                    "minimum": 1,
                    "type": "integer"
                  },
                  "sort": {
                    "enum": [
                      "updated_desc",
                      "volume_desc",
                      "signal_count_desc"
                    ],
                    "type": "string"
                  },
                  "topic": {
                    "type": "string"
                  },
                  "venue": {
                    "description": "Prediction-market venue key: polymarket (Polymarket International), polymarket_us (Polymarket US), kalshi, or limitless.",
                    "enum": [
                      "polymarket",
                      "polymarket_us",
                      "kalshi",
                      "limitless"
                    ],
                    "type": "string"
                  }
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                "type": "object"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
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              "method",
              "queryParams"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
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            },
            "required": [
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            "type": "object"
          }
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        "required": [
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        "type": "object"
      }
    },
    "payment-identifier": {
      "info": {
        "required": false
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "id": {
            "maxLength": 128,
            "minLength": 16,
            "pattern": "^[a-zA-Z0-9_-]+$",
            "type": "string"
          },
          "required": {
            "type": "boolean"
          }
        },
        "required": [
          "required"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "bazaar",
    "payment-identifier"
  ],
  "sourceHost": "quotient-api-gateway.onrender.com",
  "lastUpdated": "2026-09-11T06:16:00.255Z",
  "quality": {
    "calls30d": 9,
    "uniquePayers30d": 5,
    "lastCalledAt": "2026-09-11T06:15:59.907Z"
  },
  "liveness": {},
  "verified": false,
  "featured": false,
  "provider": {
    "host": "quotient-api-gateway.onrender.com",
    "manifest_name": "quotient-api-gateway.onrender.com",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-09-18T22:00:31.484Z"
  }
}