# Jurat League Watcher

> Jurat League Watcher is a paid API for AI agents from jurat.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Sets up a persistent watcher that monitors a sports league and delivers game results with proof via webhook

## Facts

- Endpoint: GET https://jurat.dev/v1/watch/league
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/jurat-league-watcher-a9bec916
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QWT84TRSl1Wqz32IQlkG-

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 jurat-league-watcher-a9bec916
```

Example prompt: Set up a jurat watcher for MLB that sends signed game results to https://my-agent.example.com/webhook every 30 minutes for the next 7 days, and take a snapshot whenever the score changes.

## When to prefer this

Choose this endpoint when you need an ongoing, automated feed of sports league results delivered to a webhook with cryptographic proof of authenticity — especially for use cases like prediction market settlement, autonomous agent pipelines, or any scenario requiring tamper-evident sports data over a period of days. Prefer over the single-event finals endpoint when you need to cover multiple games or an entire season rather than one specific event.

## Known failure modes

- Missing required query params (league or webhook) returns a 400 error
- Invalid league identifier returns an error indicating unsupported league
- Payment not included or insufficient USDC via x402 returns a 402 Payment Required
- Webhook URL unreachable may result in failed delivery attempts without watcher creation failure
- Invalid duration_days or cadence_minutes values may be rejected or silently defaulted

## How this service works

Notarized snapshots of any URL with signed ed25519 attestations, sports finals with proof attached, change watchers and wakeups for ephemeral agents, x402 pre-flight and conformance reports. Paid per call in USDC via x402. No signup, no API keys.

## Output

Returns a JSON object confirming the watcher was created, including kind (watch), mode (league:<name>), status (active), and finals_delivered count (initially 0). Once active, jurat will POST notarized game results to the specified webhook at the configured cadence.

## 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": [
      "league",
      "webhook"
     ],
     "properties": {
      "date": {
       "type": "string"
      },
      "league": {
       "type": "string"
      },
      "webhook": {
       "type": "string"
      },
      "duration_days": {
       "type": "string"
      },
      "cadence_minutes": {
       "type": "string"
      },
      "snapshot_on_change": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "kind": "watch",
  "mode": "league:mlb",
  "status": "active",
  "finals_delivered": 0
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/jurat-league-watcher-a9bec916/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from jurat.dev](https://www.zero.xyz/host/jurat.dev/llms.txt)