Welcome to Candide

A developer platform for building Ethereum smart wallets: gas sponsorship, passkeys, chain abstraction, and account recovery, all on top of Safe contracts.

In production since ERC-4337 launched in 2023, Candide is the longest running account abstraction infrastructure provider: millions of UserOperations bundled across hundreds of thousands of accounts. Every account contract in these docs ships with public audits from auditors such as OpenZeppelin, Ackee, Certora, Nethermind, and Cantina.

Quick Start

npm install abstractionkit

import { SafeMultiChainSigAccountV1 as SafeAccount } from "abstractionkit";

const account = SafeAccount.initializeNewAccount([ownerPublicKey]);
console.log(account.accountAddress); // 0x… deterministic smart wallet address

The account you just created is a Safe Unified Account. It has the same address on every EVM chain, and a single signature can authorize execution across all of them.

Send your First Gasless Transaction

Create a smart account and submit your first gasless UserOperation with batched transactions

Pay Gas in ERC-20

Let users pay transaction fees in USDC, DAI, or any ERC-20 token

Chain Abstraction

Sign once, execute on every chain. One account, one address, every EVM network

EIP-7702 Account Upgrades

Upgrade existing EOAs to smart accounts with Calibur (passkeys, multi-key) or Simple Account

Pay Gas in USDT on Solana

Send SPL transfers from accounts with zero SOL through the Solana Paymaster, built on Kora

Core Features

Onboarding & Deposits

• Let users deposit from any chain to wallet using a single address via Forwarding Address.

Gas Abstraction

• Gasless transactions: Sponsor user fees with flexible rules and policies
• ERC-20 gas payments: Let users pay gas in any token (USDC, DAI, etc.). No ETH required

Modern Authentication

• Passkey integration: Onchain WebAuthn support for biometric login. No seed phrases
• Social login: Email and OAuth integration

Chain Abstraction

• Sign once, execute on every chain: one signature authorizes UserOperations across every chain you target
• Same account everywhere: one address on every EVM network where Safe is deployed

Advanced Transactions

• Batch operations: Execute multiple transactions atomically
• Spending controls: Set limits and policies for subscriptions and recurring payments

Security

• Account recovery: Social Recovery or traditional recovery options
• Multi-signature: A single account controlled with multiple signatures

Developer Tools

Tool	What it does
AbstractionKit SDK	TypeScript library for building and sending UserOperations. First-class support for Safe and EIP-7702 accounts.
Bundler	ERC-4337 compliant nodes for submitting UserOperations on all major EVM chains
Paymaster	Sponsor gas or accept ERC-20 token payments with configurable policies
Solana Paymaster	Gasless Solana transactions with fees collected in USDT. Built on Kora
InstaGas	No-code dashboard to set gas sponsorship rules
Forwarding Address	One deposit address per user that routes funds from any supported chain to the destination wallet
Account Recovery	Email/SMS recovery with an alert system and automatic on-chain execution

Access Candide's Dashboard to get API keys and configure your integration.

Chains Supported

Candide is available on all major EVM equivalent networks, plus Solana through the Solana Paymaster. Reach out if you need a network added. Every chain runs the same reliability guarantees: 99.9% uptime SLA on Enterprise, verified every minute.

Arbitrum

Avalanche

Base

BnB Chain

Celo

Ethereum

Gnosis

HyperEVM

Optimism

Plasma

Polygon

Solana

Somnia

Tempo

World Chain

See the full list of supported networks, including testnets and extended networks.

Support & Feedback

Find us on Discord, Twitter, Telegram, or at team@candidelabs.com. We have night owls and early birds on the team. Expect a reply regardless of your timezone.

Using AI to build faster:

Every page has a Copy Page button in the toolbar. Paste it directly into Claude or ChatGPT with a pre-filled prompt. For agents and IDE integrations like Claude Code or Cursor, point them to /llms.txt for a full index, or install the Candide agent skills.