One bundle.Every UserOperation.

Aggregate UserOperations from your users and agents and post them to the ERC-4337 EntryPoint in a single bundle. A managed account abstraction bundler, so your team never runs a mempool, a relayer pool, or a sequencer integration.

02Features

What it does

Atomic execution.

Every op lands together or the whole bundle reverts.

Pre-flight simulation.

Failing ops are rejected before they pay gas.

Deterministic estimates.

Gas is quoted accurately, not guessed.

Reorg resilience.

Automatic retries when chains reorganize.

MEV-aware submission.

Bundles are posted to minimize extraction.

Multi-chain.

Ethereum, Base, Arbitrum, and Polygon from one endpoint.

Scales from one agent to a fleet with no code changes.

03How to use

Get started

Wire the bundler into your stack through the unified SDK. Full integration steps live in the docs.

import { createPublicClient, http } from 'viem'
import { createBundlerClient, toCoinbaseSmartAccount } from 'viem/account-abstraction'
import { privateKeyToAccount } from 'viem/accounts'
import { mainnet } from 'viem/chains'

const client = createPublicClient({
  chain: mainnet,
  transport: http()
})

export const account = await toCoinbaseSmartAccount({
  client,
  owners: [privateKeyToAccount('0x...')],
  version: '1.1',
})

export const bundlerClient = createBundlerClient({
  account,
  client,
  transport: http('https://bundler.abstraxn.com/api/v1/{CHAIN_ID}/?apikey={API_KEY}')
})

Read the docs