Sponsor Gas for Users

Remove gas friction entirely—sponsor transactions so users never see or pay fees.

Enable Sponsorship

Set sponsorship: true when getting a quote:

const quote = await meeClient.getQuote({
  sponsorship: true,
  instructions: [/* your calls */]
});

const { hash } = await meeClient.executeQuote({ quote });

Requires an API key with sponsorship enabled. Get one at dashboard.biconomy.io

By Wallet Type

Smart Account
EIP-7702
Fusion (EOA)

const quote = await meeClient.getQuote({
  sponsorship: true,
  instructions: [instruction]
});

Best for embedded wallets (Privy, Dynamic):

const quote = await meeClient.getQuote({
  sponsorship: true,
  delegate: true,
  authorization,
  instructions: [instruction]
});

Works with MetaMask, Rabby, etc. Token must support permit() for fully gasless:

const quote = await meeClient.getFusionQuote({
  sponsorship: true,
  trigger: {
    amount: 1n,  // Minimal amount
    chainId: base.id,
    tokenAddress: USDC_BASE
  },
  instructions: [instruction]
});

If trigger token doesn’t support permit, user needs gas for one approval tx.

Hosted vs Self-Hosted

Biconomy-Hosted
Self-Hosted

Simplest setup—uses Biconomy’s managed gas tanks:

const meeClient = await createMeeClient({
  account,
  apiKey: "your_project_api_key"
});

const quote = await meeClient.getQuote({
  sponsorship: true,
  instructions: [...]
});

No infrastructure to manage
Pay via dashboard (credit card or crypto)
Works across all supported chains

Full control with your own backend:

const quote = await meeClient.getQuote({
  sponsorship: true,
  sponsorshipOptions: {
    url: "https://your-backend.com/sponsor",
    gasTank: {
      address: "0xYourGasTank",
      token: "0xTokenAddress",
      chainId: 84532
    }
  },
  instructions: [...]
});

Custom approval logic
User-based policies
Your own gas tank

Example: Gasless NFT Mint

const mintInstruction = await account.buildComposable({
  type: "default",
  data: {
    chainId: base.id,
    to: NFT_CONTRACT,
    abi: nftAbi,
    functionName: "mint",
    args: [userAddress, tokenId]
  }
});

const quote = await meeClient.getQuote({
  sponsorship: true,
  instructions: [mintInstruction]
});

// User signs, you pay gas
const { hash } = await meeClient.executeQuote({ quote });

When to Use

Scenario	Recommendation
Onboarding new users	✅ Sponsor
Premium/paid features	✅ Sponsor
High-value actions	✅ Sponsor
Frequent transactions	Consider user-pays
Cost-sensitive apps	Consider user-pays in tokens

Next Steps

Composable Batch Calls

Execute multiple operations atomically

Welcome

ERC-8211 Smart Batching

Supertransaction API

AbstractJS SDK

Enable Sponsorship

By Wallet Type

Hosted vs Self-Hosted

Example: Gasless NFT Mint

When to Use

Next Steps

Composable Batch Calls

​Enable Sponsorship

​By Wallet Type

​Hosted vs Self-Hosted

​Example: Gasless NFT Mint

​When to Use

​Next Steps

Composable Batch Calls

Enable Sponsorship

By Wallet Type

Hosted vs Self-Hosted

Example: Gasless NFT Mint

When to Use

Next Steps