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Documentation Index

Fetch the complete documentation index at: https://docs.linkup.so/llms.txt

Use this file to discover all available pages before exploring further.

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.