Api Endpoint

x402-factory

Blended event probability across Kalshi and Polymarket for one market — Liquidity-weighted blend of venue implied probabilities for a canonical market slug, with per-venue detail, cross-venue divergence, and the last 1h move. Resolved markets return 410 RESOLVED with the outcome. Find slugs via /v1/probability/search.

Open interactive test console

Offering

Provider
x402-factory.com
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
Prediction Markets
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://x402-factory.com/v1/probability/:slug
MIME type
Not provided
First seen
2026-10-16T01:51:40.954Z
Last seen
Tags
prediction, probability, kalshi, polymarket

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.02 USDC
Atomic price: 20000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "20000",
    "payTo": "0xCc42Ed39a06b6cF3f484307eF76B88Bf56Fb305f"
  }
]

Observed health

Status
Healthy
Latest latency
28 ms
Average latency
106 ms
HTTP status
402
Last checked
Reachability
100% over 13 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "method": "GET",
  "pathParams": {
    "slug": "fed-rate-cut-2026-09"
  },
  "queryParams": {},
  "type": "http"
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "pathParams": {
          "properties": {
            "slug": {
              "pattern": "^[a-z0-9]+(?:-[a-z0-9]+)*$",
              "type": "string"
            }
          },
          "required": [
            "slug"
          ],
          "type": "object"
        },
        "queryParams": {
          "properties": {
            "venue": {
              "default": "blend",
              "enum": [
                "kalshi",
                "polymarket",
                "blend"
              ],
              "type": "string"
            }
          },
          "required": [],
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "properties": {
            "data": {
              "additionalProperties": false,
              "properties": {
                "category": {
                  "type": "string"
                },
                "divergence": {
                  "maximum": 1,
                  "minimum": 0,
                  "type": "number"
                },
                "last_move_1h": {
                  "type": "number"
                },
                "per_venue": {
                  "items": {
                    "additionalProperties": false,
                    "properties": {
                      "implied_p": {
                        "maximum": 1,
                        "minimum": 0,
                        "type": "number"
                      },
                      "liquidity_score": {
                        "maximum": 1,
                        "minimum": 0,
                        "type": "number"
                      },
                      "market_id": {
                        "type": "string"
                      },
                      "venue": {
                        "enum": [
                          "kalshi",
                          "polymarket"
                        ],
                        "type": "string"
                      },
                      "volume_24h_usd": {
                        "type": "number"
                      }
                    },
                    "required": [
                      "venue",
                      "market_id",
                      "implied_p",
                      "volume_24h_usd",
                      "liquidity_score"
                    ],
                    "type": "object"
                  },
                  "type": "array"
                },
                "probability": {
                  "maximum": 1,
                  "minimum": 0,
                  "type": "number"
                },
                "question": {
                  "type": "string"
                },
                "resolution_criteria_summary": {
                  "type": "string"
                },
                "resolution_date": {
                  "type": "string"
                },
                "slug": {
                  "type": "string"
                }
              },
              "required": [
                "slug",
                "question",
                "probability",
                "per_venue",
                "divergence",
                "category",
                "resolution_date",
                "resolution_criteria_summary",
                "last_move_1h"
              ],
              "type": "object"
            },
            "meta": {
              "type": "object"
            }
          },
          "required": [
            "data",
            "meta"
          ],
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}