402.space

The unified interface
for the paid web.

your agent, buying what it needs

$ 402space call exa-search --body '{"query":"…"}'

→ POST api.exa.ai/search

← HTTP/1.1 402 Payment Required

→ paying $0.007 from your balance…

← HTTP/1.1 200 OK

{ "results": [ … ] }

paid $0.007 — balance $4.99 remaining

✓
One account, every 402 API — Search, market data, enrichment — the payment protocol behind each service is our problem, not yours.
✓
No crypto. No subscriptions. — Google sign-in, pay per use from a prepaid balance. No exchange, no wallet, no monthly plan.
✓
One call shape for the paid web — Give your agent a URL and we handle the 402 payment handshake behind the scenes.

HTTP 402 “Payment Required” — reserved since 1997, useful since now.

402.space

The unified interfacefor the paid web.