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Crypto Prices Cross-Conversion (Chainlink)
x402
Crypto Prices Cross-Conversion (Chainlink) is a paid API for AI agents from x402.professorsausages.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).
Converts between two registry crypto assets using Chainlink USD oracle feeds, returning both conversion legs
Price / call$0.002
Success—
StatusUnknown
Output
Returns both legs of the conversion: the USD price of the input asset and the USD price of the output asset via Chainlink oracle feeds, plus the derived cross-rate (how many output tokens one input token equals).
Example use cases
BTC to ETH portfolio rebalancing
“I'm thinking about rebalancing my portfolio — can you tell me how much ETH I'd get for 1 BTC right now using Chainlink oracle prices, and show me the USD value for both assets separately?”
Stablecoin to altcoin rate check
“What's the current Chainlink oracle rate from USDC to MATIC? I want to see the USD price for each token and how many MATIC one USDC converts to.”
Cross-asset DeFi collateral valuation
“I need to know the oracle-backed cross-rate between WBTC and AVAX for a collateral calculation — can you pull both USD legs from Chainlink and give me the derived exchange rate between them?”
Technical details
Endpoint
POSThttps://x402.professorsausages.com/prices/convertWhen to prefer
Use this endpoint when you need a decentralized, oracle-backed cross-rate between two crypto assets and want both USD legs reported separately. Prefer this over DEX swap quotes when you want indicative oracle prices rather than liquidity-dependent AMM quotes, and when Chainlink feed coverage is sufficient for your asset pair.
Side effects
- Asset not in registry — one or both tokens lack a Chainlink USD feed, returning an error or null
- Stale oracle data — Chainlink feed may have delayed updates during low-activity periods
- Invalid input schema — missing required input or output asset fields returns a 400-class error
- Network or upstream oracle unavailability causing a 5xx response
- Payment failure — x402 payment not processed, resulting in 402 response
Tags
x402
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