project's case study - wallets for agents that pay
sigloop is the payment layer the agentic web needs — providing AI agents with smart contract wallets featuring safety limitations, session keys, scoped permissions, and native HTTP 402 payment automation.
- name
- sigloop
- Year
- tech
- AI agents, web3, ERC-4337
overview
as AI agents become increasingly autonomous, they need the ability to make payments on behalf of users, but with strict safety guarantees. sigloop provides smart contract wallets purpose-built for this new paradigm, where agents can transact within well-defined boundaries.
the core challenge was enabling autonomous payments while keeping users in control. traditional wallets give all-or-nothing access, either an agent has the private key or it doesn't. sigloop introduces a middle ground with session keys, scoped permissions, and on-chain budget guardrails.
built on the ERC-4337 account abstraction standard, sigloop eliminates seed phrases entirely. users onboard with passkeys alone, and agents receive time-bound, contract-scoped permissions that can be revoked instantly.
what we did
- smart contract development
- ERC-4337 integration
- SDK design
- security architecture
- native payment automation
- HTTP 402
- account abstraction standard
- ERC-4337
- scoped wallet permissions
- per-agent
- key revocation
- instant