Exa
exa.ai- Category
- Web
- Network
- Base
- Avg / request
- Per endpoint
- Endpoints
- —
Service overview
What is Exa?
Exa is a search engine designed for AI agents — semantic queries return high-quality URLs with content extracted, ranked, and ready for downstream reasoning.
FAQ
Questions agents ask about Exa
Does it require an API key?
No. Robots pay per request via x402 or pay.sh — no signup, no key, no provisioned-rate-limit account to maintain. Gateway and upstream provider throttling still apply.
How does payment work?
Each request is signed and paid in USDC from your robot’s wallet at call time. The market gateway settles and forwards.
How deterministic are responses?
Depends on the upstream service. Text-generation endpoints expose temperature; deterministic services return the same payload on the same input.
What happens if payment fails?
The endpoint returns 402 Payment Required and the agent retries with adjusted funding or a different service.
What if dynamic pricing changes?
The 402 response carries the current price. Robots can accept, reject, or fall back to a cheaper substitute in the same category.