Stablecoin Accepted

Can I pay Exa with USDT or USDC?

Yes. Exa accepts USDC (Base, Solana), according to its official documentation as of 2026-10-17. USDT is not listed in its official documentation.

Web search and page-contents API built for AI applications. Its docs say the Search and Contents endpoints can be paid per request in USDC via x402, without an API key.

Accepted coins and networks

CoinNetworksProcessorBillingNotes
USDCBaseSolanaNot statedPay per invoicePay-per-request via the x402 protocol on the /search and /contents endpoints; no account or API key needed. The docs also list Arc and World Chain (incl. Circle Gateway batched payments). Regular API-key plans are billed separately.

How to pay

  1. Docs: Reference > Pay with x402. Call /search or /contents without an API key, answer the 402 challenge with a signed USDC payment. Not tested with a live payment.
  2. Choose the coin and the network shown at checkout. Pay only on a network listed above for that coin.
  3. Send the exact amount from a wallet you control, before the payment window expires. Sending on a different network can lose the funds.
  4. Keep the transaction ID until the order is confirmed. If the payment does not show up, contact Exa support with it.

Evidence

Verbatim quotes from Exa’s own pages. See how we verify.

  • “Use Exa’s Search and Contents APIs without an API key. Pay per request with USDC on Arc, Base, World Chain, or Solana via the x402 protocol”
    https://exa.ai/docs/reference/x402-guide · captured 2026-10-17

Screenshots

Cropped to the payment wording; any personal or account data is blurred before publishing. Click a screenshot to enlarge it here; use the arrows, arrow keys or a swipe to switch.

Exa docs: Pay with x402 — USDC on Arc, Base, World Chain or Solana
Exa docs: Pay with x402 — USDC on Arc, Base, World Chain or Solana · captured 2026-10-17 · source page

Questions

Does Exa accept USDT?

Not according to its official sources: Exa does not list USDT as a payment option.

Does Exa accept USDC?

Yes. Exa accepts USDC (Base, Solana), according to its official sources.

Which payment processor does Exa use for crypto?

Exa’s official sources do not name the payment processor.

Does Exa require identity checks to pay with crypto?

Identity checks at payment: Not stated.

Does Exa refund crypto payments?

Refunds for crypto payments: Not stated.

Can Exa auto-renew with crypto?

Auto-renew with crypto: No.

History

  • — Added. Verified via official docs.

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