early developmentthis project is currently in development; what you see here is a presentation of the idea.

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sigloop

wallets for agents that pay

built on ERC-4337

the payment layer
the agentic web needs

giving AI agents smart contract wallets with safety limitations
with session keys, scoped permissions, and native x402 payment automation

ERC-4337 smart accounts with time-bound, contract-scoped permissions that can be revoked instantly
session keys
agents detect 402 responses, validate budgets, sign UserOps, and retry automatically
x402 payments
ERC-4337 account abstraction eliminates seed phrases; onboard with passkeys alone
passkey onboarding
per-agent spending limits, token allowlists, and real-time audit logs enforced on-chain
budget guardrails

if ZeroDev is the engine,
sigloop is the car

plug in the SDK and get everything without touching EntryPoints, UserOps, or bundler plumbing.

Product screenshot
scoped agent wallets.
per-agent access to specific contracts, tokens, and time windows. revoke instantly.
native x402 payment automation.
auto-detect 402 responses, validate budgets, sign, and retry — zero developer code.
interoperable by default.
any agent framework, runtime, or deployment target. pre-built modules for recovery, chain abstraction, and DeFi.

sigloop account abstraction

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session keys, scoped permissions & native x402 payment automation,
the modern abstraction of web3 for a better user experience and security