Api Endpoint

eu-verify

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.

Open interactive test console

Offering

Provider: x402-datashop-production.up.railway.app
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-datashop-production.up.railway.app/v1/predict/polymarket
MIME type: application/json
First seen: 2026-10-16T01:51:51.176Z
Last seen: 2026-11-02T18:57:08.854Z
Tags: prediction-markets, polymarket, probabilities, Events, Macro, Crypto

Website

Payment pricing

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

Payment option 1: 0.01 USDC
Atomic price: 10000 · Network: eip155:8453 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0x6ab8efe305cce67daa48c97bde29c04402822dff"
  }
]

Observed health

Status: Healthy
Latest latency: 104 ms
Average latency: 296 ms
HTTP status: 402
Last checked: 2026-11-02T18:57:08.847Z
Reachability: 100% over 14 checks

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

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET",
        "HEAD",
        "DELETE"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "tag": {
          "type": "string",
          "description": "Polymarket tag slug, e.g. crypto, politics, economy",
          "default": "crypto"
        },
        "limit": {
          "type": "integer",
          "minimum": 1,
          "maximum": 10,
          "description": "Events to return",
          "default": 5
        }
      }
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET",
            "HEAD",
            "DELETE"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {
            "limit": {
              "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"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}