GET /v1/board/crypto

$0.03realtimetier: datacache 60sEngine A — Probability API

One-call board of the most active crypto prediction markets: top markets by volume with blended live probabilities, resolution dates, and per-market slugs for drill-down. The bulk read for agents tracking the state of crypto at a glance.

Parameters

Example

curl "https://x402-factory.com/v1/board/crypto?limit=10"

Example response

{
  "data": {
    "category": "crypto",
    "markets": [
      {
        "slug": "bitcoin-above-150k-2026-09",
        "question": "Will Bitcoin trade above $150,000 by September 30?",
        "probability": 0.4133,
        "volume_24h_usd": 591880.68,
        "resolution_date": "2026-09-30"
      },
      {
        "slug": "bitcoin-above-100k-2026-12",
        "question": "Will Bitcoin close 2026 above $100,000?",
        "probability": 0.6492,
        "volume_24h_usd": 410547.48,
        "resolution_date": "2026-12-31"
      },
      {
        "slug": "ethereum-close-above-8000-2026-12",
        "question": "Will Ethereum close above $8,000 on December 31?",
        "probability": 0.3428,
        "volume_24h_usd": 290264.76,
        "resolution_date": "2026-12-31"
      },
      {
        "slug": "ethereum-above-5k-2026-12",
        "question": "Will Ethereum close 2026 above $5,000?",
        "probability": 0.3988,
        "volume_24h_usd": 179329.65,
        "resolution_date": "2026-12-31"
      },
      {
        "slug": "crypto-market-cap-5t-2026-12",
        "question": "Will total crypto market cap exceed $5 trillion by year end?",
        "probability": 0.3096,
        "volume_24h_usd": 161300.18,
        "resolution_date": "2026-12-31"
      },
      {
        "slug": "solana-above-400-2026-10",
        "question": "Will Solana trade above $400 by October 31?",
        "probability": 0.2516,
        "volume_24h_usd": 79399.21,
        "resolution_date": "2026-10-31"
      },
      {
        "slug": "bitcoin-etf-inflows-5b-2026-08",
        "question": "Will spot Bitcoin ETF net inflows exceed $5B in July?",
        "probability": 0.528,
        "volume_24h_usd": 71211.02,
        "resolution_date": "2026-08-05"
      }
    ]
  },
  "meta": {
    "endpoint": "/v1/board/crypto",
    "version": "1.0.0",
    "generated_at": "2026-08-18T22:54:16.757Z",
    "freshness": "realtime",
    "sources": [
      "kalshi",
      "polymarket"
    ],
    "request_id": "req_00000000",
    "docs": "https://x402-factory.com/docs/probability.board.crypto",
    "data_mode": "live"
  }
}

Response schema (data payload)

{
  "type": "object",
  "properties": {
    "category": {
      "type": "string"
    },
    "markets": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "slug": {
            "type": "string"
          },
          "question": {
            "type": "string"
          },
          "probability": {
            "type": "number",
            "minimum": 0,
            "maximum": 1
          },
          "volume_24h_usd": {
            "type": "number"
          },
          "resolution_date": {
            "type": "string"
          }
        },
        "required": [
          "slug",
          "question",
          "probability",
          "volume_24h_usd",
          "resolution_date"
        ],
        "additionalProperties": false
      }
    }
  },
  "required": [
    "category",
    "markets"
  ],
  "additionalProperties": false
}

The platform wraps every payload in an envelope: { "data": …, "meta": { endpoint, version, generated_at, freshness, sources, request_id, docs, data_mode } }.

Payment (x402)

Unpaid requests receive 402 with payment requirements (accepts). Pay $0.03 in USDC on Base per call via an X-PAYMENT header — see docs.x402.org. With PAYMENT_MODE=disabled (local dev) the endpoint is open.

Errors