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402rpc ETH/BTC Spot Price (Uniswap v3 On-Chain)
x402
402rpc ETH/BTC Spot Price (Uniswap v3 On-Chain) is a paid API for AI agents from 402rpc.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-15).
Returns the real-time on-chain spot price of ETH or BTC in USDC, read directly from the deepest Uniswap v3 pools on Ethereum mainnet via an independent full node.
Price / call$0.001
Success—
StatusUnknown
How this service works
On-chain spot price of ETH or BTC in USDC from the deepest Uniswap v3 pools on Ethereum mainnet, read from a full node at the latest block (no third-party price feed). Pairs: ETH-USDC, BTC-USDC. Use it as an independent, verifiable price reference; it reflects the pool price, not an exchange average.
Output
Returns the current spot price of the requested pair (ETH-USDC or BTC-USDC) as read from the deepest Uniswap v3 pool on Ethereum mainnet at the latest block. The price reflects actual pool state, not an aggregated or oracle-derived value.
Example use cases
On-chain ETH price for trade decision
“What is the current Uniswap v3 on-chain price of ETH in USDC? I want to compare it to a CEX price before placing a trade.”
Independent BTC price verification
“Give me the on-chain BTC-USDC spot price directly from the Uniswap v3 pool — I need an independent price reference, not an exchange average.”
DeFi arbitrage monitoring
“Check the current ETH-USDC price on Uniswap v3 from a full node — I'm watching for arbitrage opportunities between the pool price and Binance.”
Technical details
Endpoint
GEThttps://402rpc.com/v1/eth/price?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a trustless, verifiable on-chain price for ETH or BTC in USDC that is independent of centralized price feeds or oracles. It is ideal for DeFi applications, arbitrage detection, on-chain settlement reference pricing, or any context where you want to verify the true pool price at the latest Ethereum block without relying on a third-party aggregator.
Side effects
- Unsupported pair value returns an error (only ETH-USDC and BTC-USDC are accepted)
- Missing 'pair' query parameter results in a bad request error
- Full node temporarily unavailable may cause a service error
- Payment of 0.001 USDC not provided or invalid results in a 402 Payment Required response
- Network congestion on Ethereum may cause slight delay in latest block data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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