# x402-factory MLB Baseball Probability Movers

> x402-factory MLB Baseball Probability Movers is a paid API for AI agents from x402-factory.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Returns the biggest probability shifts in active MLB baseball prediction markets over a chosen time window (1h, 6h, or 24h), ranked by absolute change with volume surge ratios.

## Facts

- Endpoint: GET https://x402-factory.com/v1/movers/sports-mlb
- Price: $0.02/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-probability-movers-b86d0387
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WBCN9ZexkLNn4zF4GTf6a

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-probability-movers-b86d0387
```

Example prompt: Show me the top 10 MLB baseball markets with the biggest probability moves over the last 6 hours, so I can see where baseball news is landing hardest right now.

## When to prefer this

Choose this endpoint when you specifically need MLB baseball prediction market movers — it is pre-filtered to baseball, saving you from filtering the general /v1/movers endpoint yourself. Prefer it over the generic movers endpoint when your use case is sports-specific or baseball-specific monitoring, news impact tracking, or building baseball-focused dashboards.

## Known failure modes

- Invalid window value returns 400 error (only '1h', '6h', '24h' accepted)
- limit outside 1–50 range returns validation error
- min_liquidity outside 0–1 range returns validation error
- Payment failure (402) if USDC payment not attached or insufficient
- Empty movers array if no MLB markets have moved significantly in the selected window
- Rate limiting or upstream data feed delays may cause stale or missing data

## How this service works

Biggest MLB baseball probability moves (1h/6h/24h) — The fastest way to see where news is landing in MLB baseball: active markets ranked by absolute probability change over your chosen window, with volume surge ratios. Same shape as /v1/movers, pre-filtered to MLB baseball markets.

## Output

An array of MLB baseball prediction market movers, each including the market slug, the question text, current probability (p_now), previous probability (p_prev), absolute probability delta, volume surge ratio, and category — sorted by largest absolute probability change over the selected window. Also includes a meta object with request context.

## 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
      },
      "window": {
       "enum": [
        "1h",
        "6h",
        "24h"
       ],
       "type": "string",
       "default": "24h"
      },
      "category": {
       "enum": [
        "politics",
        "economics",
        "weather",
        "crypto",
        "sports",
        "science-tech",
        "entertainment"
       ],
       "type": "string"
      },
      "min_liquidity": {
       "type": "number",
       "maximum": 1,
       "minimum": 0,
       "description": "Minimum liquidity_score (0–1)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "data",
      "meta"
     ],
     "properties": {
      "data": {
       "type": "object",
       "required": [
        "movers"
       ],
       "properties": {
        "movers": {
         "type": "array",
         "items": {
          "type": "object",
          "required": [
           "slug",
           "question",
           "p_now",
           "p_prev",
           "delta",
           "volume_surge_ratio",
           "category"
          ],
          "properties": {
           "slug": {
            "type": "string"
           },
           "delta": {
            "type": "number"
           },
           "p_now": {
            "type": "number",
            "maximum": 1,
            "minimum": 0
           },
           "p_prev": {
            "type": "number",
            "maximum": 1,
            "minimum": 0
           },
           "category": {
            "type": "string"
           },
           "question": {
            "type": "string"
           },
           "volume_surge_ratio": {
            "type": "number"
           }
          },
          "additionalProperties": false
         }
        }
       },
       "add
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "movers": [
    {
     "slug": "dodgers-win-world-series-2026",
     "delta": 0.008,
     "p_now": 0.2382,
     "p_prev": 0.2302,
     "category": "sports",
     "question": "Will the Dodgers win the 2026 World Series?",
     "volume_surge_ratio": 1.01
    },
    {
     "slug": "yankees-win-world-series-2026-11",
     "delta": 0.0055,
     "p_now": 0.1169,
     "p_prev": 0.1114,
     "category": "sports",
     "question": "Will the New York Yankees win the 2026 World Series?",
     "volume_surge_ratio": 0.99
    }
   ]
  },
  "meta": {
   "docs": "https://x402-factory.com/docs/probability.movers.sports-mlb",
   "sources": [
    "kalshi",
    "polymarket"
   ],
   "version": "1.0.0",
   "endpoint": "/v1/movers/sports-mlb",
   "data_mode": "live",
   "freshness": "realtime",
   "request_id": "req_00000000",
   "generated_at": "2026-08-21T03:58:58.151Z"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-factory-mlb-baseball-probability-movers-b86d0387/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)