ngundotra/transfer-request.md

Created July 10, 2025 21:24

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x402 Tx Flow

Raw

sequenceDiagram
  participant Client
  participant Server
  participant Facilitator

  Client->>Server: GET /api
  Server->>Client: HTTP 402 - Payment Required with { extra: { account: pubkey } }
  Client->>Solana: GET /blockhash
  Client->>Client: Form templated transaction, cosign, serialize
  Client->>Server: Include Header: X-PAYMENT b64 payload 
  Server->>Facilitator: /verify
  Facilitator->>Solana: Simulate, sign, send transaction
  Solana->>Facilitator: Verify transaction inclusion
  Facilitator->>Server: Confirm
  Server->>Client: return response x-payment-response

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