Particle Bundler

The Particle Bundler is our open-source, production-ready ERC-4337 bundler.
It has already processed nearly 1M+ UserOperations across the EVM ecosystem and powers some of the largest AA campaigns in Web3.

Free to use via a public RPC: https://bundler.particle.network
Automatically included in all Particle AA SDKs
Proven to scale and battle-tested in live campaigns

Explore the Particle Bundler repository.

Why use the Particle Bundler?

Open-source & free — no lock-in, use it standalone or with our SDKs
Production-grade — tested at scale with millions of UserOps
Full RPC support — standard bundler methods available out of the box
Multi-chain ready — live on every chain supported by Particle’s Smart Wallet-as-a-Service

Available RPC Methods

The Bundler RPC endpoint: https://bundler.particle.network/{chainId?} Supported methods (no auth required):

eth_supportedEntryPoints
eth_estimateUserOperationGas
eth_sendUserOperation
eth_getUserOperationByHash
eth_getUserOperationReceipt

Example request:

JSON

{
  "method": "eth_sendUserOperation",
  "params": [
    {
      "sender": "0x8Fb859E944561678be40Cdd2dB16551396c0b074",
      "nonce": "0x0150",
      "initCode": "0x",
      "callData": "0x9e5d4c49000000000000000000000000329a7f8b91ce7479035cb1b5d62ab41845830ce8000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000600000000000000000000000000000000000000000000000000000000000000000",
      "callGasLimit": "0xa13c",
      "verificationGasLimit": "0xe2d8",
      "maxFeePerGas": "0x7ca702cd",
      "maxPriorityFeePerGas": "0x7ca702b0",
      "paymasterAndData": "0x000031dd6d9d3a133e663660b959162870d755d4000000000000000000000000329a7f8b91ce7479035cb1b5d62ab41845830ce8000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000416665636080709b968ebec098bf71fb0e79b3b480cc9ff809f192afb478c84ec50ad2de74b93a67860542099b11a1b5dbfa9bc21a2790c58e10015ce992a02f411b00000000000000000000000000000000000000000000000000000000000000",
      "preVerificationGas": "0x011120",
      "signature": "0x7cc0a2ae350b79c5b189bd36d55ab6a2756097d6d37537e3ec2c26daaa82c6d909fed87ff9d79a6fa127bd798126259ee72fa9395ecbeb1f70ed22ca35983aea1c"
    },
    "0x5ff137d4b0fdcd49dca30c7cf57e578a026d2789"
  ],
  "id": 1695717470,
  "jsonrpc": "2.0",
  "chainId": 80001
}

Supported Chains

The Particle Bundler supports all chains available in Smart Wallet-as-a-Service. 👉 For the full list, see Network Coverage.

ACCOUNT ABSTRACTION

Account Abstraction API

Architecture

Bundler

Particle Bundler

Why use the Particle Bundler?

Available RPC Methods

Supported Chains

Interactive Examples

getUserOperationReceipt

getUserOperationByHash

sendUserOperation

estimateUserOperationGas

supportedEntryPoints

​Particle Bundler

​Why use the Particle Bundler?

​Available RPC Methods

​Supported Chains

​Interactive Examples

getUserOperationReceipt

getUserOperationByHash

sendUserOperation

estimateUserOperationGas

supportedEntryPoints

Particle Bundler

Why use the Particle Bundler?

Available RPC Methods

Supported Chains

Interactive Examples