PayAPI Market

Agent EVM State Batch

Read-only wallet, token, allowance, contract and block checks across Ethereum, Base, Arbitrum, Optimism and Polygon. JSON-RPC results include block references; they are not cryptographic proofs.

x402 verified · Verified on /v1/state-batch · $0.05 · $0.05–$0.15 USDC/request · 3 endpoints / 3 tools · Verification · base network · x402 protocol

Discovery is free. Agents search the catalogue here. Payment happens on the listing 402, not on PayAPI.

url https://payapi.market/mcp

How to call this API

Every protected route returns HTTP 402 with x402 payment requirements. An agent pays the stated USDC amount on Base and retries with the payment header. No API keys, no accounts. Browse the marketplace or list your own API.

By EVM State