# x402-factory NFL Sports Prediction Markets Board

> x402-factory NFL Sports 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 NFL football prediction markets with live blended probabilities, 24h volume, resolution dates, and slugs for drill-down in a single call.

## Facts

- Endpoint: GET https://x402-factory.com/v1/board/sports-nfl
- 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-nfl-sports-prediction-markets-board-053f97fd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eXhpuK--j8Ukwfyw4Imev

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-nfl-sports-prediction-markets-board-053f97fd
```

Example prompt: Pull up the top 20 active NFL prediction markets right now — I want to see the live probabilities, 24-hour trading volume, and when each one resolves.

## When to prefer this

Choose this endpoint when you need a comprehensive, single-call snapshot of all active NFL prediction markets with live probabilities and volume data. Prefer this over individual market lookups when you want a full board view rather than drilling into a specific market. Use the slug values returned to then fetch detailed data on specific markets. Best for dashboards, newsletters, or agents that need to track the overall state of NFL prediction markets at a glance.

## Known failure modes

- Payment required (402) if x402 payment header is missing or invalid
- Invalid limit parameter (outside 1-50 range) returns validation error
- Service unavailable if upstream prediction market data provider is down
- Empty markets array if no NFL markets are currently active (off-season)
- Rate limiting if too many calls in short succession

## How this service works

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

## Output

Returns a JSON object with a 'data' field containing a category string ('NFL') and an array of market objects. Each market includes: slug (for drill-down), question (the market question), probability (0-1 blended live probability), volume_24h_usd (24-hour trading volume in USD), and resolution_date. Also includes a meta object with request metadata.

## 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": "chiefs-win-superbowl-2027-02",
     "question": "Will the Chiefs win Super Bowl LXI?",
     "probability": 0.1974,
     "volume_24h_usd": 178504.9,
     "resolution_date": "2027-02-07"
    },
    {
     "slug": "chiefs-win-super-bowl-lxi-2027-02",
     "question": "Will the Chiefs win Super Bowl LXI?",
     "probability": 0.1616,
     "volume_24h_usd": 109434.1,
     "resolution_date": "2027-02-07"
    }
   ],
   "category": "sports-nfl"
  },
  "meta": {
   "docs": "https://x402-factory.com/docs/probability.board.sports-nfl",
   "sources": [
    "kalshi",
    "polymarket"
   ],
   "version": "1.0.0",
   "endpoint": "/v1/board/sports-nfl",
   "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-nfl-sports-prediction-markets-board-053f97fd/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)