Wallet Verify Solana API — Pay Per Call with USDC on Base

wallet_verify_solana API

Verify an ed25519 Solana wallet signature over a message containing a Nonce line. Consumes the nonce — one verification per nonce. Returns the signer pubkey. Part of the x402 Gateway — $0.001 per call, settled in USDC on Base. No accounts, no API keys: agents pay per request via the x402 protocol.

How payment works

Send a POST to https://x402.freeq.one/tools/wallet_verify_solana without a payment header and the API replies 402 Payment Required with an x402 challenge (payTo address, USDC amount, Base network). A paying agent signs the USDC payment and retries with the X-PAYMENT header — settlement is verified on-chain in seconds and the API response returns with an X-PAYMENT-RESPONSE receipt.

Example call

curl -X POST https://x402.freeq.one/tools/wallet_verify_solana \
  -H "Content-Type: application/json" \
  -d '{"items":[{"proof":{"merkleTreeDepth":20,"merkleTreeRoot":"0x1","nullifier":"0x1","message":"0x1","scope":"0x1","points":["0x1","0x1","0x1","0x1","0x1","0x1","0x1","0x1"]}}]}'

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