Task

Simulate

3 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.

Aether x402 REST usage

Wallet balance on Base: the native ETH balance of any address, read live from the chain. Input: address

aether-x402.vercel.app Crypto & Payments 21 calls / 30d checked 2026-10-26

0.001 USDC per call per call

Simulate x402 REST usage

Pre-flight an x402 payment: decode the endpoint's challenge, report the cost on every rail (Base and Solana) and the cheapest, and — with a payer address — verify the wallet can afford the call on Base.

quartermaster.surewhynot.app Crypto & Payments 3 calls / 30d checked 2026-10-26

0.003 USDC per call per call

Estimate gas x402 REST usage

Estimates the gas a transaction would need and prices it at the current gas price, before you sign anything. Also the cheapest way to find out that a call would revert. Via eth_estimateGas.

flat-rate-llm.kikoribera03.workers.dev Other services 1 calls / 30d checked 2026-10-26

0.005 USDC per call per call

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