Skip to main content

​
Overview

Fee sponsorship lets CDP pay the Solana network fee on behalf of your users. Users can send transactions without holding SOL in their wallet to cover gas. This feature is in private preview and available to enterprise-scale integrations only. To opt in, apply for access. Once approved, pass useCdpSponsor: true to useSendSolanaTransaction or useSendSolanaUsdc.

​
Sponsoring a SOL transfer

Use useSendSolanaTransaction with useCdpSponsor: true. CDP signs the transaction as the fee payer, so users don’t need SOL for the network fee.
sendSolanaTransactionSponsored.tsx
import { useSendSolanaTransaction, useSolanaAddress } from "@coinbase/cdp-hooks";
import { PublicKey, Transaction, SystemProgram, SYSVAR_RECENT_BLOCKHASHES_PUBKEY } from "@solana/web3.js";
import { Buffer } from "buffer";

function createAndEncodeTransaction(fromAddress: string, toAddress: string, lamports: number) {
  const fromPubkey = new PublicKey(fromAddress);
  const toPubkey = new PublicKey(toAddress);

  const transaction = new Transaction().add(
    SystemProgram.transfer({ fromPubkey, toPubkey, lamports }),
  );

  transaction.recentBlockhash = SYSVAR_RECENT_BLOCKHASHES_PUBKEY.toBase58();
  transaction.feePayer = fromPubkey;

  return Buffer.from(transaction.serialize({ requireAllSignatures: false })).toString("base64");
}

function SendSponsoredTransaction() {
  const { sendSolanaTransaction } = useSendSolanaTransaction();
  const { solanaAddress } = useSolanaAddress();

  const handleSend = async () => {
    if (!solanaAddress) return;

    const transaction = createAndEncodeTransaction(
      solanaAddress,
      "recipient-address",
      1_000_000, // 0.001 SOL
    );

    const result = await sendSolanaTransaction({
      solanaAccount: solanaAddress,
      network: "solana-mainnet",
      transaction,
      useCdpSponsor: true,
    });

    console.log("Transaction signature:", result.transactionSignature);
  };

  return <button onClick={handleSend}>Send Transaction</button>;
}

​
Sponsoring a USDC transfer

Use useSendSolanaUsdc with useCdpSponsor: true. When createRecipientAta is also enabled, CDP sponsors both the network fee and the associated token account (ATA) rent for the recipient.
sendSolanaUsdcSponsored.tsx
import { useSendSolanaUsdc, useSolanaAddress } from "@coinbase/cdp-hooks";

function SendSponsoredUsdc() {
  const { sendSolanaUsdc } = useSendSolanaUsdc();
  const { solanaAddress } = useSolanaAddress();

  const handleSend = async () => {
    if (!solanaAddress) return;

    const result = await sendSolanaUsdc({
      solanaAccount: solanaAddress,
      to: "recipient-address",
      amount: "1.50",
      network: "solana-mainnet",
      createRecipientAta: true,
      useCdpSponsor: true,
    });

    console.log("Transaction signature:", result.transactionSignature);
  };

  return <button onClick={handleSend}>Send USDC</button>;
}

​
Rate limits

CDP enforces sponsorship limits. If a limit is exceeded, the API returns a 429 response. To request a limit increase, reach out in the Coinbase Developer Discord.
  • Sending Transactions: Build and send Solana transactions without fee sponsorship
  • Signing: Sign Solana messages and transactions without broadcasting
  • React Hooks: Explore all available CDP hooks for embedded wallets