Verifying Paymaster Reference
This is a reference guide page, describing only the technical specification for the Verifying Paymaster. Please see the Verifying Paymaster overview page for the full collection of documentation, including tutorials, how-to guides, and conceptual guides for the Verifying Paymaster.
Our verifying paymasters allows you to sponsor User Operations on-chain with our paymaster contracts.
In exchange for sponsoring the on-chain gas fees, we deduct from your balance off-chain.
The following chains are supported
| Chain | Mainnet | Testnet |
|---|---|---|
| Ethereum | ✅ (ethereum) | ✅ (sepolia) ✅ (goerli) |
| Arbitrum | ✅ (arbitrum) | ✅ (arbitrum-goerli) |
| Polygon | ✅ (polygon) | ✅ (mumbai) |
| Optimism | ✅ (optimism) | ✅ (optimism-goerli) |
| Gnosis | ✅ (gnosis) | ✅ (chiado-testnet) |
| Linea | ✅ (linea) | ✅ (linea-testnet) |
| Base | ✅ (base) | ✅ (base-goerli) |
| Avalanche C-Chain | ✅ (avalanche) | ✅ (avalanche-fuji) |
| Scroll | ✅ (scroll) | ✅ (scroll-alpha-testnet) ✅ (scroll-sepolia-testnet) |
| Celo | ✅ (celo) | ✅ (celo-alfajores-testnet) |
| BSC | ✅ (binance) | |
| DFK Chain | ✅ (dfk-chain) | ✅ (dfk-chain-test) |
| Klaytn | ✅ (klaytn-cypress) | |
| Xai Orbit | ✅ (xai-goerli-orbit) | |
| Nautilus | ✅ (nautilus) | |
| opBNB | ✅ (opbnb) |
All calls are in JSON-RPC format and have to be made to the following URL: https://api.pimlico.io/v1/{chain}/rpc?apikey=[YOUR_API_KEY_HERE]
Where {chain} is the chain variable (such as goerli or polygon) as found in the table above.