# x402-factory MLB Baseball Prediction Markets Board

> x402-factory MLB Baseball Prediction Markets Board is a paid API for AI agents from x402-factory.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-15).

Returns all active MLB baseball prediction markets with live blended probabilities, 24h volume, resolution dates, and slugs in a single call.

## Facts

- Endpoint: GET https://x402-factory.com/v1/board/sports-mlb
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-factory-mlb-baseball-prediction-markets-board-70d8887a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kMTc3vSwUE7rUVs0bzxQX

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability x402-factory-mlb-baseball-prediction-markets-board-70d8887a
```

Example prompt: Pull up the full MLB baseball prediction market board — show me all active markets with their live probabilities and 24-hour volume, up to 50 markets.

## When to prefer this

Use this endpoint when you need a broad, single-call snapshot of the entire active MLB baseball prediction market landscape — especially for bulk reads, daily briefings, or initializing a monitoring agent. Prefer this over drill-down slug endpoints when you don't yet know which specific markets exist or want ranked-by-volume ordering. Choose this over NBA or other sports endpoints when the user's focus is specifically on Major League Baseball.

## Known failure modes

- Invalid 'limit' parameter outside 1-50 range returns a validation error
- Payment failure or insufficient USDC balance returns HTTP 402
- Network timeout if downstream prediction market data source is slow
- Empty markets array if no MLB markets are currently active
- Rate limiting if called too frequently without payment

## How this service works

All active MLB baseball markets with live probabilities in one call — One-call board of the most active MLB baseball 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 MLB baseball at a glance.

## Output

Returns a JSON object with a 'data' field containing the category label ('MLB') and an array of market objects, each with a slug (for drill-down), a question string, a blended live probability (0–1), 24-hour USD volume, and a resolution date string. A 'meta' object is also included at the top level.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "limit": {
       "type": "integer",
       "default": 20,
       "maximum": 50,
       "minimum": 1
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "data",
      "meta"
     ],
     "properties": {
      "data": {
       "type": "object",
       "required": [
        "category",
        "markets"
       ],
       "properties": {
        "markets": {
         "type": "array",
         "items": {
          "type": "object",
          "required": [
           "slug",
           "question",
           "probability",
           "volume_24h_usd",
           "resolution_date"
          ],
          "properties": {
           "slug": {
            "type": "string"
           },
           "question": {
            "type": "string"
           },
           "probability": {
            "type": "number",
            "maximum": 1,
            "minimum": 0
           },
           "volume_24h_usd": {
            "type": "number"
           },
           "resolution_date": {
            "type": "string"
           }
          },
          "additionalProperties": false
         }
        },
        "category": {
         "type": "string"
        }
       },
       "additionalProperties": false
      },
      "meta": {
       "type": "object"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "markets": [
    {
     "slug": "dodgers-win-world-series-2026",
     "question": "Will the Dodgers win the 2026 World Series?",
     "probability": 0.2359,
     "volume_24h_usd": 369753.69,
     "resolution_date": "2026-11-01"
    },
    {
     "slug": "yankees-win-world-series-2026-11",
     "question": "Will the New York Yankees win the 2026 World Series?",
     "probability": 0.117,
     "volume_24h_usd": 100712.71,
     "resolution_date": "2026-11-05"
    }
   ],
   "category": "sports-mlb"
  },
  "meta": {
   "docs": "https://x402-factory.com/docs/probability.board.sports-mlb",
   "sources": [
    "kalshi",
    "polymarket"
   ],
   "version": "1.0.0",
   "endpoint": "/v1/board/sports-mlb",
   "data_mode": "live",
   "freshness": "realtime",
   "request_id": "req_00000000",
   "generated_at": "2026-08-21T03:58:58.081Z"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-factory-mlb-baseball-prediction-markets-board-70d8887a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-factory.com](https://www.zero.xyz/host/x402-factory.com/llms.txt)