x402-toolbox — 333 deterministic agent utility APIs

Name: x402-toolbox — 333 deterministic agent utility APIs
Brand: x402-toolbox
Availability: InStock

333 keyless utility endpoints for AI agents: EVM chain reads, DNS/WHOIS, email validation, hash/encoding, VIN/barcode decode, weather, finance. One-line JSON, $0.002/call.

x402 verified · Verified on /chain/block-number · $0.002 · $0.002 USDC/request · 333 endpoints / 333 tools · Tools · 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 x402-toolbox