ZeroDev
ZeroDev is account-abstraction / smart-wallet infrastructure for EVM chains. It runs an ERC-4337 (and EIP-7702) bundler RPC and a paymaster RPC, both exposed as JSON-RPC over HTTPS, plus the Kernel smart-account SDK and a meta-aggregator (Smart Routing). Apps sponsor gas, let users pay gas in ERC-20s, and submit UserOperations through a single project-scoped RPC endpoint.
4 APIs
0 Features
Account AbstractionSmart WalletsERC-4337EIP-7702PaymasterBundlerJSON-RPCWeb3
ERC-4337 bundler exposed as JSON-RPC over HTTPS. A single POST to the project-scoped RPC URL carries methods eth_sendUserOperation, eth_estimateUserOperationGas, eth_getUserOper...
Verifying and ERC-20 paymaster exposed as JSON-RPC over the same project-scoped RPC URL. Methods include zd_sponsorUserOperation (ZeroDev sponsorship), pm_sponsorUserOperation (...
Kernel is ZeroDev's modular ERC-4337 and EIP-7702 smart-account implementation. The TypeScript Kernel SDK (built on viem / permissionless) builds and signs UserOperations, then ...
ZeroDev's meta-infrastructure aggregates underlying bundler and paymaster providers behind one project-scoped RPC, with Smart Routing that lets users deposit and have assets rou...
opencollection: 1.0.0
info:
name: ZeroDev Bundler & Paymaster RPC
version: '3.0'
description: 'JSON-RPC 2.0 over HTTPS. All calls are an HTTP POST of a {jsonrpc,id,method,params} envelope to a single project-scoped
URL: https://rpc.zerodev.app/api/v3/{projectId}/chain/{chainId}. Authentication is by projectId embedded in the URL path.
The same endpoint serves both bundler and paymaster methods; append ?provider=ULTRA_RELAY to route through UltraRelay.'
items:
- info:
name: Bundler RPC
type: folder
items:
- info:
name: eth_sendUserOperation
type: http
http:
method: POST
url: https://rpc.zerodev.app/api/v3/{projectId}/chain/{chainId}
header:
- key: Content-Type
value: application/json
body:
type: json
data: '{"jsonrpc":"2.0","id":1,"method":"eth_sendUserOperation","params":[{"sender":"0x1234567890123456789012345678901234567890","nonce":"0x0","callData":"0x","callGasLimit":"0x88b8","verificationGasLimit":"0x33450","preVerificationGas":"0xc350","maxFeePerGas":"0x59682f00","maxPriorityFeePerGas":"0x3b9aca00","signature":"0x"},"0x0000000071727De22E5E9d8BAf0edAc6f37da032"]}'
docs: Submit a signed UserOperation to the bundler. Returns the userOpHash.
- info:
name: eth_estimateUserOperationGas
type: http
http:
method: POST
url: https://rpc.zerodev.app/api/v3/{projectId}/chain/{chainId}
header:
- key: Content-Type
value: application/json
body:
type: json
data: '{"jsonrpc":"2.0","id":1,"method":"eth_estimateUserOperationGas","params":[{"sender":"0x1234567890123456789012345678901234567890","nonce":"0x0","callData":"0x","signature":"0x"},"0x0000000071727De22E5E9d8BAf0edAc6f37da032"]}'
docs: Estimate preVerificationGas, verificationGasLimit, and callGasLimit for a UserOperation.
- info:
name: eth_getUserOperationByHash
type: http
http:
method: POST
url: https://rpc.zerodev.app/api/v3/{projectId}/chain/{chainId}
header:
- key: Content-Type
value: application/json
body:
type: json
data: '{"jsonrpc":"2.0","id":1,"method":"eth_getUserOperationByHash","params":["0xdead00000000000000000000000000000000000000000000000000000000beef"]}'
docs: Look up a UserOperation by its hash.
- info:
name: eth_getUserOperationReceipt
type: http
http:
method: POST
url: https://rpc.zerodev.app/api/v3/{projectId}/chain/{chainId}
header:
- key: Content-Type
value: application/json
body:
type: json
data: '{"jsonrpc":"2.0","id":1,"method":"eth_getUserOperationReceipt","params":["0xdead00000000000000000000000000000000000000000000000000000000beef"]}'
docs: Fetch the receipt for an included UserOperation.
- info:
name: eth_supportedEntryPoints
type: http
http:
method: POST
url: https://rpc.zerodev.app/api/v3/{projectId}/chain/{chainId}
header:
- key: Content-Type
value: application/json
body:
type: json
data: '{"jsonrpc":"2.0","id":1,"method":"eth_supportedEntryPoints","params":[]}'
docs: List the EntryPoint contract addresses (v0.6 / v0.7) the bundler supports.
- info:
name: eth_chainId
type: http
http:
method: POST
url: https://rpc.zerodev.app/api/v3/{projectId}/chain/{chainId}
header:
- key: Content-Type
value: application/json
body:
type: json
data: '{"jsonrpc":"2.0","id":1,"method":"eth_chainId","params":[]}'
docs: Return the chain ID served by this RPC.
- info:
name: Paymaster RPC
type: folder
items:
- info:
name: zd_sponsorUserOperation
type: http
http:
method: POST
url: https://rpc.zerodev.app/api/v3/{projectId}/chain/{chainId}
header:
- key: Content-Type
value: application/json
body:
type: json
data: '{"jsonrpc":"2.0","id":1,"method":"zd_sponsorUserOperation","params":[{"chainId":8453,"userOp":{"sender":"0x1234567890123456789012345678901234567890","nonce":"0x0","callData":"0x","signature":"0x"}}]}'
docs: ZeroDev gas sponsorship. Returns the paymaster fields and updated gas values.
- info:
name: pm_sponsorUserOperation
type: http
http:
method: POST
url: https://rpc.zerodev.app/api/v3/{projectId}/chain/{chainId}
header:
- key: Content-Type
value: application/json
body:
type: json
data: '{"jsonrpc":"2.0","id":1,"method":"pm_sponsorUserOperation","params":[{"sender":"0x1234567890123456789012345678901234567890","nonce":"0x0","callData":"0x","signature":"0x"},"0x0000000071727De22E5E9d8BAf0edAc6f37da032"]}'
docs: Pimlico-compatible sponsorship. Returns paymasterAndData (v0.6) or paymaster fields (v0.7).
- info:
name: pm_getPaymasterStubData
type: http
http:
method: POST
url: https://rpc.zerodev.app/api/v3/{projectId}/chain/{chainId}
header:
- key: Content-Type
value: application/json
body:
type: json
data: '{"jsonrpc":"2.0","id":1,"method":"pm_getPaymasterStubData","params":[{"sender":"0x1234567890123456789012345678901234567890","nonce":"0x0","callData":"0x"},"0x0000000071727De22E5E9d8BAf0edAc6f37da032","0x2105",{}]}'
docs: ERC-7677 stub paymaster data, used upstream to derive preVerificationGas.
- info:
name: pm_getPaymasterData
type: http
http:
method: POST
url: https://rpc.zerodev.app/api/v3/{projectId}/chain/{chainId}
header:
- key: Content-Type
value: application/json
body:
type: json
data: '{"jsonrpc":"2.0","id":1,"method":"pm_getPaymasterData","params":[{"sender":"0x1234567890123456789012345678901234567890","nonce":"0x0","callData":"0x"},"0x0000000071727De22E5E9d8BAf0edAc6f37da032","0x2105",{}]}'
docs: ERC-7677 final paymaster data and signed paymaster fields.
- info:
name: zd_getERC20PaymasterAddress
type: http
http:
method: POST
url: https://rpc.zerodev.app/api/v3/{projectId}/chain/{chainId}
header:
- key: Content-Type
value: application/json
body:
type: json
data: '{"jsonrpc":"2.0","id":1,"method":"zd_getERC20PaymasterAddress","params":[{"entryPoint":"0x0000000071727De22E5E9d8BAf0edAc6f37da032","gasToken":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}]}'
docs: Resolve the ERC-20 paymaster address for paying gas with a given token.
