# Oracle Market Arbitrage

> Oracle Market Arbitrage is a paid API for AI agents from api.craigmbrown.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Detects live cross-venue arbitrage spreads for a given asset and returns an actionable entry/exit spread recommendation

## Facts

- Endpoint: POST https://api.craigmbrown.com/v1/services/oracle.market-arbitrage
- 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/oracle-market-arbitrage-6dcf6b46
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yKivF5MKeMLy0Bb6kcOFF

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 oracle-market-arbitrage-6dcf6b46 -d '<json body>'
```

Example prompt: Check for live cross-venue arbitrage spreads on ETH right now and tell me the best actionable entry and exit spread I can act on.

## When to prefer this

Choose this endpoint when you need actionable arbitrage spreads with specific entry/exit points rather than just raw price comparisons. It is powered by BlindOracle and builds on cross-chain price aggregation, making it superior to simple price delta tools for traders who need executable spread intelligence across both DEX and CEX venues simultaneously.

## Known failure modes

- Asset not found or unsupported — empty findings array returned
- Insufficient liquidity data across venues — spread computation may be incomplete
- Oracle price aggregation lag — spread data may be stale during high volatility
- Invalid or malformed prompt input — API returns error or null summary
- Payment failure — x402 payment of 0.1 USDC not processed, request rejected

## How this service works

Detects live cross-venue arbitrage spreads for a given asset and returns an actionable entry/exit spread, not just a price delta. Built on oracle.cross-chain-prices' price aggregation. Settlement proof: ProofOfSettledOutcome (kind 30120, data/proof_settled_outcomes.jsonl). Pairs with crypto.investment-plays for a full execution plan.

## Output

Returns a JSON object with a summary string and an array of findings describing detected arbitrage spreads, including entry/exit spread details, venues involved, and actionable recommendations based on real-time cross-venue price aggregation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "prompt": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "schema": {
  "type": "object",
  "properties": {
   "summary": {
    "type": "string"
   },
   "findings": {
    "type": "array",
    "items": {
     "type": "string"
    }
   }
  }
 },
 "example": {
  "summary": "..."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/oracle-market-arbitrage-6dcf6b46/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.craigmbrown.com](https://www.zero.xyz/host/api.craigmbrown.com/llms.txt)