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
- website
- sigloop.tiscacatalin.com
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