fourzerotwo
Free tier

Try it free

Most of the catalog is free up to a daily allowance, so your agent works before anyone sets up a wallet. Past the allowance, the same call costs a fraction of a cent in USDC over x402.

No card, no wallet. We'll only use your email to tell you about changes to the API.

WhoFree calls per day
MCP, no key50
Free key (HTTP or MCP)500
Endpoints marked sample (our own data: sanctions, property, vehicle tax…)3 each

Allowances reset at midnight UTC. Without a key, plain HTTP calls still return 402 with the price, so x402 agents can always pay. A few endpoints with strict upstream limits are paid only.