> ## Documentation Index
> Fetch the complete documentation index at: https://uasdev.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Bundler

# Understanding The Particle Bundler

The Particle Bundler is Particle Network's **in-house and open-source bundler implementation**, reliably facilitating close to **1 million UserOperations** across the EVM ecosystem. The Particle Bundler is automatically used natively within Particle's [various AA SDKs](/api-reference/aa/introduction), although it can also be used on its own, for free, through the open Particle Bundler RPC. The Particle Bundler has been proven to be a highly efficient and robust Bundler implementation capable of large-scale utilization of account abstraction. The Particle Bundler has been battle-tested by acting as the primary infrastructure component driving some of the ecosystem's largest [AA-centric growth campaigns](https://galxe.com/ParticleNetwork).

This document will briefly describe how you can leverage the Particle Bundler on its own through its public RPC endpoint.

***

<Tip>Check out the [Particle's Bundler repository](https://github.com/Particle-Network/particle-bundler-server).</Tip>

***

## Available methods

The Particle Bundler is open for use through its public RPC endpoint, which is: `https://bundler.particle.network`, with an optional path parameter of `chainId`.

At the moment, this RPC contains the standard bundler methods of:

* `eth_supportedEntryPoints`
* `eth_estimateUserOperationGas`
* `eth_sendUserOperation`
* `eth_getUserOperationByHash`
* `eth_getUserOperationReceipt`

All of these can be called through standard RPC requests without any authentication required, as shown in the example below:

```json JSON theme={null}
{
  "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

Currently, the Particle Bundler supports every chain available within Particle's Smart Wallet-as-a-Service. For a complete list of all chains supported, AA or not, look at [Network Coverage](/guides/network-coverage). Otherwise, the following chains are supported by the Particle Bundler:

* Ethereum Mainnet
  * Ethereum Goerli
  * Ethereum Sepolia
* Polygon Mainnet
  * Polygon Mumbai
* Optimism Mainnet
  * Optimism Goerli
* Scroll Mainnet
  * Scroll Sepolia
* Linea Mainnet
  * Linea Testnet
* Base Mainnet
  * Base Goerli
* Mantle Mainnet
  * Mantle Testnet
* Taiko Katla
* Avalanche Mainnet
  * Avalanche Fuji
* BNB Chain Mainnet
  * BNB Chain Testnet
* opBNB Mainnet
  * opBNB Testnet
* COMBO Testnet
* PGN Mainnet
  * PGN Testnet
* Gnosis Mainnet
  * Gnosis Testnet
* Astar zkEVM Testnet
* X1 Testnet
* Viction Mainnet
  * Viction Testnet
* Moonbeam
  * Moonriver
  * Moonbase
* Polygon zkEVM Mainnet
  * Polygon zkEVM Testnet
* Lumoz zkEVM Testnet
* ReadON Testnet
* ZetaChain Mainnet
  * ZetaChain Testnet
* Ancient8 Testnet
* ZKFair Mainnet
  * ZkFair Testnet
* Berachain Testnet
* Blast Mainnet
  * Blast Testnet
* MAP Protocol Mainnet
  * MAP Protocol Testnet
* Merlin Mainnet
  * Merlin Testnet
* LumiBit Testnet
* BEVM Canary Mainnet
  * BEVM Canary Testnet
* B² Testnet
* Core Mainnet
  * Core Testnet
* SatoshiVM Testnet
* Mode Mainnet
  * Mode Testnet

***

## Interactive API examples

For a full list of interactive API request examples alongside parameter descriptions for each endpoint, head over to [Bundler RPC](/api-reference/aa/bundler/getuseroperationreceipt) within the SDKs & APIs section of the documentation, or choose your desired endpoint below:

<CardGroup cols={2}>
  <Card title="getUserOperationReceipt" href="/api-reference/aa/bundler/getuseroperationreceipt">
    Returns a detailed object containing specific transaction details for a given user operation hash.
  </Card>

  <Card title="getUserOperationByHash" href="/api-reference/aa/bundler/getuseroperationbyhash">
    Returns a user operation object corresponding with a specific hash.
  </Card>

  <Card title="sendUserOperation" href="/api-reference/aa/bundler/senduseroperation">
    Pushes a signed user operation to the network.
  </Card>

  <Card title="estimateUserOperationGas" href="/api-reference/aa/bundler/estimateuseroperationgas">
    Takes a partial user operation object and returns detailed gas estimates.
  </Card>

  <Card title="supportedEntryPoints" href="/api-reference/aa/bundler/supportedentrypoints">
    Returns a list of EntryPoint addresses supported by the Particle Bundler.
  </Card>
</CardGroup>