Api Endpoint

api.seerium.xyz

Ending soon and expiring prediction market API for Polymarket, Kalshi, and Gemini. Find active markets resolving soon with close time, bid/ask prices, volume, liquidity, venue, and market links.

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Offering

Provider: api.seerium.xyz
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://api.seerium.xyz/v1/prediction/ending-soon
MIME type: application/json
First seen: 2026-10-16T01:51:40.954Z
Last seen: 2026-11-02T20:33:59.279Z
Tags: None supplied

Website

Payment pricing

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

Payment option 1: 0.1 USDC
Atomic price: 100000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2: 0.1 USDC
Atomic price: 100000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "100000",
    "payTo": "0x81832eEDe3a4ad96CB3D7cA09977636D912fd3D5"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "100000",
    "payTo": "2h752kAbb9z1jpdSzqMEYg9JHv6TPJ6T2BfAJMyjLFtZ"
  }
]

Observed health

Status: Healthy
Latest latency: 67 ms
Average latency: 819 ms
HTTP status: 402
Last checked: 2026-11-02T20:33:59.272Z
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"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "source": {
          "type": "string",
          "enum": [
            "polymarket",
            "kalshi",
            "gemini",
            "all"
          ],
          "description": "Optional prediction market venue filter: polymarket, kalshi, gemini, or all. Defaults to all."
        },
        "hours": {
          "type": "number",
          "minimum": 1,
          "maximum": 168,
          "description": "Optional resolving-soon window in hours. Defaults to 24."
        },
        "limit": {
          "type": "number",
          "minimum": 1,
          "maximum": 100,
          "description": "Optional maximum ending-soon markets to return. Defaults to 25."
        }
      }
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {
            "hours": {
              "description": "Optional resolving-soon window in hours. Defaults to 24.",
              "maximum": 168,
              "minimum": 1,
              "type": "number"
            },
            "limit": {
              "description": "Optional maximum ending-soon markets to return. Defaults to 25.",
              "maximum": 100,
              "minimum": 1,
              "type": "number"
            },
            "source": {
              "description": "Optional prediction market venue filter: polymarket, kalshi, gemini, or all. Defaults to all.",
              "enum": [
                "polymarket",
                "kalshi",
                "gemini",
                "all"
              ],
              "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"
}