Welcome to Candide

A TypeScript toolkit for building Ethereum smart wallets: gas sponsorship, passkeys, batch transactions, and account recovery, all on top of Safe contracts.

Quick Start

npm install abstractionkit

import { SafeAccountV0_3_0 as SafeAccount } from "abstractionkit";

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

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

EIP-7702 Account Upgrades

Upgrade existing EOAs to smart accounts with EIP-7702 delegation

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 of the docs.

Why Smart Accounts?

Smart accounts eliminate the biggest UX barriers in Web3:

No gas tokens: Users pay fees in any ERC-20 or have them sponsored entirely
Modern onboarding: Login with passkeys, email, or social accounts. No seed phrases
Built-in security: Account recovery, multisig support, and spending limits
Batch transactions: Execute multiple operations atomically in a single transaction

Smart accounts are programmable contracts, unlocking capabilities impossible with traditional EOAs.

Core Features

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.)

Modern Authentication

Passkey integration: Onchain WebAuthn support for biometric login
Social login: Email and OAuth integration

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
InstaGas	No-code dashboard to set gas sponsorship rules. No Solidity required
Account Recovery	Email/SMS recovery with an alert system and automatic on-chain execution