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BlindOracle Cross-Chain Price Aggregator
x402
BlindOracle Cross-Chain Price Aggregator is a paid API for AI agents from api.craigmbrown.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-15).
Aggregates a token's price across multiple chains and venues (DEX + CEX) into one comparable read, flagging the highest-deviation pair
Price / call$0.03
Success—
StatusUnknown
How this service works
Aggregates a token's price across multiple chains and venues (DEX + CEX) into one comparable read, flagging the highest-deviation pair. Settlement proof: ProofOfSettledOutcome (kind 30120, data/proof_settled_outcomes.jsonl). Narrower than oracle.comprehensive-report (single metric, not a full report); feeds oracle.market-arbitrage's spread detection.
Output
Returns a JSON object with a summary string and an array of findings describing the token's price across multiple chains and DEX/CEX venues, including which pair exhibits the highest price deviation.
Example use cases
Pre-trade cross-chain price check
“Before I execute this trade, can you pull the aggregated price for WBTC across all DEX and CEX venues and tell me which chain or exchange is showing the biggest deviation?”
Arbitrage opportunity research
“I'm looking for arbitrage opportunities on SOL — give me its price aggregated across every chain and venue you can see and flag the pair with the highest price spread.”
Portfolio valuation cross-chain sanity check
“Can you get me the consolidated price for USDC across all chains and trading venues, and let me know if any venue is significantly off from the rest?”
Technical details
Endpoint
POSThttps://api.craigmbrown.com/v1/services/oracle.cross-chain-pricesWhen to prefer
Use this endpoint when you need a single consolidated price view for a token spanning both on-chain DEX venues and centralized exchanges across multiple blockchains. It is narrower than oracle.comprehensive-report (which provides a full multi-metric report) but purpose-built for cross-chain price comparison and deviation detection — ideal as a feed for arbitrage spread detection or pre-trade price checks.
Side effects
- Unknown or unsupported token symbol returns empty or error findings
- Network congestion or chain unavailability may produce incomplete cross-chain data
- Price data for low-liquidity tokens may be sparse or missing from some venues
- Payment failure (insufficient USDC balance) blocks the call entirely
- Stale data may be returned if upstream oracles have not updated recently
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| prompt | string |
Output
Schema · Response
{
"type": "json",
"schema": {
"type": "object",
"properties": {
"summary": {
"type": "string"
},
"findings": {
"type": "array",
"items": {
"type": "string"
}
}
}
},
"example": {
"summary": "..."
}
}Tags
x402
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