# EventEdge Oracle Cross-Market Check

> EventEdge Oracle Cross-Market Check is a paid API for AI agents from edge.arakelproof.space, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-17).

Retrieves machine-readable prediction-market data for a given term, comparing odds and positions across multiple markets without executing any trades.

## Facts

- Endpoint: GET https://edge.arakelproof.space/v1/market/cross-check
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/eventedge-oracle-cross-market-check-e5dfd4da
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sRGeAinsyURcrljpvXG_Q

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 eventedge-oracle-cross-market-check-e5dfd4da
```

Example prompt: Can you check EventEdge Oracle for cross-market prediction data on 'US Federal Reserve rate cut 2025' — I want to see how different prediction markets are pricing that outcome right now?

## When to prefer this

Choose this endpoint when you need a read-only, machine-readable snapshot of prediction market data aggregated across multiple platforms for a specific event, topic, or entity. It is ideal for agents that need to monitor or compare prediction market consensus without any risk of accidentally executing trades. Prefer it over individual exchange APIs when cross-market comparison is the goal.

## Known failure modes

- Missing required 'term' query parameter returns a validation error
- Unknown or unsupported term yields no market data in response
- Rate limiting or payment failure (x402) blocks the request
- Service downtime on arakelproof.space causes connection errors
- Ambiguous terms may return low-relevance or empty market comparisons

## How this service works

Machine-readable prediction-market monitoring and cross-market comparison. No trade execution.

## Output

A JSON object conforming to the eventedge.cross-market-check.v1 schema, including a generated_at timestamp, a no_trade_execution flag confirming read-only operation, and cross-market prediction data for the queried term — likely including market names, odds or probability figures, and comparative positions across platforms.

## 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": [
      "term"
     ],
     "properties": {
      "term": {
       "type": "string",
       "description": "Event, topic, company, person, or market concept"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "schema": "eventedge.cross-market-check.v1",
  "generated_at": "2026-09-14T00:00:00Z",
  "no_trade_execution": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/eventedge-oracle-cross-market-check-e5dfd4da/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from edge.arakelproof.space](https://www.zero.xyz/host/edge.arakelproof.space/llms.txt)