Polymarket & Kalshi Odds

Recent payments · which agents last used it

Every indexed settlement paid to this service’s wallet, newest first. The index does not record which endpoint a payment was for, so if this wallet serves more than one endpoint, the rows include payments for the others. Paged up to the newest 5,000; the full history is on the merchant page.

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying: a price here is a claim, not a quote.

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x8d38D6026cf3A9805DE9c5F0611ceE95B532B120",
    "amount": "20000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x8d38D6026cf3A9805DE9c5F0611ceE95B532B120",
    "amount": "20000",
    "scheme": "exact",
    "network": "eip155:137",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
    },
    "payTo": "3644DrcePengCVjznEa59Dm7Mu7Acr522NvYyapHRHQh",
    "amount": "20000",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "queries": [
            "bitcoin"
          ],
          "maxMarketsPerQuery": 10
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "items": [
            {
              "url": "https://polymarket.com/event/bitcoin-above-on-october-23-2026",
              "venue": "polymarket",
              "bestAsk": 1,
              "bestBid": 0.999,
              "change7d": null,
              "closesAt": "2026-10-23T16:00:00Z",
              "outcomes": [
                {
                  "outcome": "Yes",
                  "probability": 0.9995
                },
                {
                  "outcome": "No",
                  "probability": 0.0005
                }
              ],
              "question": "Will the price of Bitcoin be above $72,000 on October 23?",
              "change24h": 0.001,
              "volumeUsd": 34250.394056000005,
              "eventTitle": "Bitcoin above ___ on October 23?",
              "liquidityUsd": 122378.67304,
              "volume24hUsd": 27635.37,
              "yesProbability": 0.9995
            }
          ]
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "required": [],
              "properties": {
                "sortBy": {
                  "enum": [
                    "volume24hr",
                    "liquidity",
                    "endDate"
                  ],
                  "type": "string",
                  "description": "Order of the most-active list."
                },
                "venues": {
                  "type": "array",
                  "items": {
                    "enum": [
                      "polymarket",
                      "kalshi"
                    ],
                    "type": "string"
                  },
                  "maxItems": 3,
                  "description": "Which prediction markets to read (default both)."
                },
                "queries": {
                  "type": "array",
                  "items": {
                    "type": "string"
                  },
                  "maxItems": 1,
                  "description": "What to search, e.g. [\"fed rate\", \"bitcoin\", \"election\"]. Leave empty for the most active markets."
                },
                "minVolume24hUsd": {
                  "type": "integer",
                  "description": "Skip thinly traded markets."
                },
                "crossVenueMatches": {
                  "type": "boolean",
                  "description": "Pair the same question on Polymarket and Kalshi and report the probability spread (free rows)."
                },
                "maxMarketsPerQuery": {
                  "type": "integer",
                  "maximum": 25,
                  "description": "Up to this many markets per venue for each topic."
                }
              }
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog

2026-10-25 17:20Z

Last indexed by Roundhouse

2026-11-15 08:50Z

Last enriched (probe, favicon, geo)

2026-10-23 14:46Z

x402 version

2

Max timeout

300s

Liveness probe

HTTP 405