---
id: task-061
title: Safe Multisig Integration for Collaborative Transactions
status: To Do
assignee: []
created_date: '2026-01-02 16:08'
labels:
  - feature
  - web3
  - multisig
  - safe
  - governance
dependencies:
  - task-007
priority: medium
---

## Description

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Integrate Safe (Gnosis Safe) SDK to enable collaborative transaction building and signing through the canvas interface.

## Overview
Allow CryptID users to create, propose, and sign Safe multisig transactions visually on the canvas. Multiple signers can collaborate in real-time to approve transactions.

## Dependencies
- Requires task-007 (Web3 Wallet Linking) to be completed first
- Users must link their Safe wallet or EOA that is a Safe signer

## Technical Approach
- Use Safe{Core} SDK for transaction building and signing
- Create TransactionBuilderShape for visual tx composition
- Use Safe Transaction Service API for proposal queue
- Real-time signature collection via canvas collaboration

## Features
1. **Safe Linking** - Link Safe addresses (detect via ERC-1271)
2. **TransactionBuilderShape** - Visual transaction composer
3. **Signature Collection UI** - See who has signed, who is pending
4. **Transaction Queue** - View pending transactions for linked Safes
5. **Execution** - Execute transactions when threshold is met

## Visual Transaction Builder Capabilities
- Transfer ETH/tokens
- Contract interactions (with ABI import)
- Batch transactions
- Scheduled transactions (via delay module)

## Collaboration Features
- Real-time signature status on canvas
- Notifications when signatures are needed
- Discussion threads on pending transactions

## References
- Safe{Core} SDK: https://docs.safe.global/sdk/overview
- Safe Transaction Service API: https://docs.safe.global/core-api/transaction-service-overview
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## Acceptance Criteria
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- [ ] #1 Install and configure Safe{Core} SDK
- [ ] #2 Implement ERC-1271 signature verification for Safe linking
- [ ] #3 Create TransactionBuilderShape for visual tx composition
- [ ] #4 Build signature collection UI with real-time updates
- [ ] #5 Display pending transaction queue for linked Safes
- [ ] #6 Enable transaction execution when threshold is met
- [ ] #7 Support basic transfer and contract interaction transactions
<!-- AC:END -->
