--- title: "Solana Fee Sponsorship: Sponsor Fees or Accept USDC & USDT" description: "Sponsor Solana transaction fees for your users, or let them pay in USDC or USDT. Kora-compatible, on mainnet and devnet, with the same Pimlico API key as your EVM chains." canonical: https://www.pimlico.io/solana --- # Solana Fee Sponsorship: Sponsor Fees or Accept USDC & USDT > Markdown mirror of https://www.pimlico.io/solana. Every page on this site has a markdown version at the same path with a `.md` suffix. For technical and implementation details, see Pimlico's documentation index at https://docs.pimlico.io/llms.txt. ## Pages on this site ### Home - [The gas sponsorship engine for onchain apps](https://www.pimlico.io/index.md): Pimlico is the gas sponsorship engine for onchain apps. Sponsor transactions, let users pay gas in USDC, USDT, or 300+ other tokens, and set policy rules across 100+ EVM chains. On Solana, sponsor fees or let users pay them in USDC or USDT. ### Case-studies - [How fomo keeps social trading gas-free and sub-second](https://www.pimlico.io/case-studies/fomo.md): How the social trading app reached a retail audience by deleting gas from the experience: 8.8 million user operations across 14 mainnet chains, with sub-second median confirmation. - [World App: an abstraction that holds across thousands of mini apps](https://www.pimlico.io/case-studies/world-app.md): How World App keeps the blockchain invisible across thousands of mini apps: 23 million bundled user operations in twelve months, 36 million sponsored, and a ~1.5s median confirmation. ### Products - [Ecosystem Gas Programs for Chains](https://www.pimlico.io/products/ecosystem-gas-programs.md): For chains and ecosystems: sponsor gas for every team building on your chain, so their users transact without ever holding native token. - [Pay Gas in USDC, USDT & 300+ ERC-20 Tokens](https://www.pimlico.io/products/erc20-gas.md): Let users pay gas in USDC, USDT, or any of 300+ ERC20 tokens, with no native tokens required. Audited by OpenZeppelin and Quantstamp. - [Gas Sponsorship for Onchain Apps](https://www.pimlico.io/products/gas-sponsorship.md): Sponsor gas for your users so they transact instantly, with no native tokens to buy and no fee prompts to abandon. Powered by the engine behind 100M+ sponsored transactions. - [Sponsorship Policies — Spend Controls for Gas](https://www.pimlico.io/products/sponsorship-policies.md): Spend controls for gas: sponsor the first N transactions per user, cap dollars per transaction, per user, or per campaign, all configured in the dashboard and applied instantly. - [Transaction Infrastructure & ERC-4337 Bundlers](https://www.pimlico.io/products/transaction-infrastructure.md): The execution engine under the sponsorship layer: ERC-4337 bundlers with <2s inclusion on L2s, parallel processing, and 250M+ transactions relayed in production. ### Solutions - [Onchain Execution for AI Agents](https://www.pimlico.io/solutions/ai-agents.md): Give AI agents smart accounts that execute on demand: they trade, pay, and move money the instant your logic fires. Sponsor their actions, or let user-funded agents pay their own way in USDC, USDT, or 300+ tokens, within the limits you set. - [Smart Account Infrastructure for Chains](https://www.pimlico.io/solutions/chains.md): Launch with smart account infrastructure from day one and fund gas programs that turn your ecosystem’s onboarding friction into growth. - [Deploy Pimlico on Your Chain](https://www.pimlico.io/solutions/chains/deploy.md): Enterprise deployments for chains and ecosystems: Pimlico's complete suite, from gas sponsorship to transaction infrastructure, live on your chain so every builder ships better UX from day one. - [Gasless Onboarding for Consumer Apps](https://www.pimlico.io/solutions/consumer-apps.md): Onboard users who have never owned crypto: sponsor their gas, set budgets that protect your margins, and make the blockchain disappear from your UX. - [Enterprise Onchain Infrastructure](https://www.pimlico.io/solutions/enterprise.md): SOC 2 certified infrastructure with custom SLAs, 24/7 support, and the team that co-authored ERC-4337, built for companies that cannot afford a dropped transaction. - [Stablecoin Settlement Infrastructure](https://www.pimlico.io/solutions/stablecoin-processors.md): Execute stablecoin transactions reliably, at low latency, on 100+ EVM chains and Solana, with gas paid in the stablecoins you already move. - [Smart Account Infrastructure for Startups](https://www.pimlico.io/solutions/startups.md): Ship smart accounts in hours, not weeks. Free on testnets, pay-as-you-go in production, no commitments. It is the stack startups like Daimo and Zora started on. - [Smart Account Infrastructure for Wallets](https://www.pimlico.io/solutions/wallets.md): Build gasless smart wallets with any signer and any smart account, on the infrastructure trusted by MetaMask, Safe, and Trust Wallet. ### Other pages - [Case Studies](https://www.pimlico.io/case-studies.md): How teams like fomo and Tools for Humanity ship gasless, reliable onchain experiences on Pimlico infrastructure. - [Customers](https://www.pimlico.io/customers.md): The teams building on Pimlico: Circle, MetaMask, Safe, Trust Wallet, Zora, Tools for Humanity, and more, across wallets, consumer apps, and stablecoin payments. - [Smart Account & Signer Integrations](https://www.pimlico.io/integrations.md): Every major smart account and signer, already integrated: Safe, Kernel, MetaMask, Privy, Turnkey, passkeys, and more, across 100+ chains. - [Pricing](https://www.pimlico.io/pricing.md): Free on testnets, pay-as-you-go in production, custom Enterprise rates. Transparent credit-based pricing for gas sponsorship and transaction infrastructure. - [Privacy Policy](https://www.pimlico.io/privacy.md): This Privacy Policy will inform you about how we look after your personal data when you visit our website or use our services and tell you about your privacy rights. - Solana Fee Sponsorship: Sponsor Fees or Accept USDC & USDT (this page) - [Terms of Service](https://www.pimlico.io/tos.md): This Terms of Service will inform you about the terms of using Pimlico's services. --- # Your users never need SOL for fees. Pimlico pays Solana transaction fees for your users, or lets them pay in USDC or USDT instead. Kora-compatible, and live on mainnet and devnet. [Start building](https://dashboard.pimlico.io)[Read the Solana guide](https://docs.pimlico.io/guides/solana) **send.ts** ```typescript // User taps "Send": no SOL, no fee prompt const { signature } = await pimlico.signAndSendTransaction({ transaction: userSignedTransaction, }) // ✓ Confirmed on Solana // ✓ Fee paid: sponsored by you ``` ## Two ways to cover the fee Every Solana transaction names a fee payer. Make it Pimlico, then choose who ends up paying. ### You pay it The user never sees a fee. You cover it from your Pimlico balance. 1 Build the transaction Set Pimlico’s signer as the fee payer. 2 The user signs Only their own signature, with no SOL needed for the fee. 3 Pimlico pays and sends Pimlico adds the fee payer’s signature and submits the transaction. 4 Charged to your balance Itemized with your sponsorship spending in the dashboard. ### Your users pay it in USDC or USDT The user pays the fee in a stablecoin they already hold, not in SOL. 1 Get a quote The fee is priced in USDC or USDT before anyone signs. 2 Add the payment A token transfer to Pimlico joins the transaction. 3 The user signs once Their action and the fee go out as one transaction. 4 Pimlico pays and sends Pimlico checks the payment, pays the network fee and submits. ## Built on Kora’s API Pimlico speaks the JSON-RPC API of Kora, the Solana Foundation’s open-source fee payer. Integrate with the official [@solana/kora](https://github.com/solana-foundation/kora) client, or send the JSON-RPC calls yourself. Running your own Kora node today? The methods below work against Pimlico unchanged, without a node to operate. - getPayerSigner - getBlockhash - getSupportedTokens - estimateTransactionFee - signAndSendTransaction **sponsor.ts** ```typescript import { KoraClient } from "@solana/kora" // The same Pimlico API key you use on EVM chains const pimlico = new KoraClient({ rpcUrl: "https://solana.pimlico.io/v1/mainnet/rpc?apikey=API_KEY", }) // Set Pimlico's signer as the transaction's fee payer const { signer_address: feePayer } = await pimlico.getPayerSigner() // The user signs, Pimlico co-signs as fee payer and sends const { signature } = await pimlico.signAndSendTransaction({ transaction: userSignedTransaction, // base64 }) // ✓ Fee paid by Pimlico, charged to your balance ``` **stablecoin-fee.ts** ```typescript // Users pay the fee in USDC or USDT instead const { payment_instruction, payment_amount } = await pimlico.getPaymentInstruction({ transaction, // base64, Pimlico's signer as fee payer fee_token: USDC_MINT, source_wallet: user, }) // Show the user payment_amount, add payment_instruction to the // transaction, have the user sign it, then send it const { signature } = await pimlico.signAndSendTransaction({ transaction: userSignedTransactionWithPayment, }) // ✓ Fee paid in USDC, not SOL ``` Privy ## Works with Privy’s Solana wallets Privy’s embedded Solana wallets can sign a transaction without sending it, so Pimlico can be its fee payer. Users log in with email or a social account, sign once, and never need SOL for the fee. Pimlico can also collect the fee in USDC or USDT, on the same API key and dashboard you’d use with Privy on EVM chains. [Privy’s guide to signing Solana transactions](https://docs.privy.io/wallets/using-wallets/solana/sign-a-transaction) **privy.ts** ```typescript import { useSignTransaction, useWallets, } from "@privy-io/react-auth/solana" import { KoraClient } from "@solana/kora" import { getBase64Decoder } from "@solana/kit" const pimlico = new KoraClient({ rpcUrl: "https://solana.pimlico.io/v1/mainnet/rpc?apikey=API_KEY", }) const { wallets } = useWallets() const { signTransaction } = useSignTransaction() // Build it with Pimlico's signer as the fee payer (encoded bytes) const { signer_address: feePayer } = await pimlico.getPayerSigner() const transaction = buildTransaction({ feePayer, instructions }) // The user signs with their Privy embedded wallet const { signedTransaction } = await signTransaction({ transaction, wallet: wallets[0], }) // Pimlico adds the fee payer's signature and sends it const { signature } = await pimlico.signAndSendTransaction({ transaction: getBase64Decoder().decode(signedTransaction), }) ``` ## One dashboard for Solana and EVM Solana runs on the same API keys as your EVM chains and sits beside them everywhere you look: usage, sponsorship spending, and a transaction log that links every signature to Solscan. When someone asks whether a transaction landed or who paid for it, the answer is one filter away. [Open the dashboard](https://dashboard.pimlico.io) Solana transaction logs Illustrative data | Signature | Type | Network | Status | Fee | | --- | --- | --- | --- | --- | | 4vJ9…uKq2 | Sponsored | Solana | Included | $0.0012 | | 2nXa…8hTe | Paid in USDC | Solana | Included | 0.0031 USDC | | 5Gk3…pW7r | Paid in USDT | Solana | Included | 0.0029 USDT | | 3hQm…Zc1b | Sponsored | Solana Devnet | Pending | $0.0011 | Example of the Solana transaction logs in the Pimlico dashboard: each transaction's signature, who paid the fee, the network, its status and the fee. Pimlico has processed 250M+ transactions and sponsored 100M+ across 100+ chains. Solana runs on the same platform, with the same team and 24/7 support behind it. ## Frequently asked questions **Can I use my existing Pimlico API key?** Yes. Every Pimlico API key works on Solana. Point the Kora client at https://solana.pimlico.io/v1/mainnet/rpc?apikey=YOUR\_KEY (or swap mainnet for devnet), and Solana shows up next to your EVM usage in the dashboard. **Which Solana networks are supported?** Solana mainnet and devnet. **Which tokens can users pay fees in?** USDC and USDT. The fee is quoted in the token before the user signs, so they see the exact amount they are paying. **How am I billed for sponsored Solana fees?** Sponsored fees are charged to your Pimlico balance, the same way as gas sponsorship on EVM chains, and itemized under Usage in the dashboard. **Do sponsorship policies work on Solana?** Not yet. Policies apply to EVM chains today, and Solana support is coming. Until then, sponsored Solana transactions aren’t capped by policy rules. **Is it compatible with Kora?** Yes. The endpoint speaks Kora’s JSON-RPC API and supports getPayerSigner, getBlockhash, getSupportedTokens, estimateTransactionFee, signAndSendTransaction, so the @solana/kora client works with it. **Does it work with Privy?** Yes. Privy’s embedded Solana wallets can sign a transaction without sending it. Build the transaction with Pimlico’s signer as the fee payer, have the user sign it with Privy’s useSignTransaction hook, then send it through Pimlico. **Do my users need a smart account?** No. On Solana the fee payer is its own signer on the transaction, so users keep the wallet they already have.