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Linkup now supports x402 — an open payment protocol that lets you pay per request in USDC on the Base network, with no account or API key required.

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What’s New

  • Pay per request — send USDC directly from your wallet, no sign-up needed.
  • All endpoints supported — /v1/search, /v1/fetch, and /v1/research.
  • Standard HTTP flow — get a 402 response, sign with your wallet, resend with the payment header.
  • On-chain settlement — every payment is verified and settled on Base.

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Get Started

See the x402 documentation for pricing, a quickstart example, and headers reference.