sigcli-auth-proxy
sigcli Auth Proxy Skill
Skill by ara.so — Devtools Skills collection.
Overview
sigcli is an authentication CLI and proxy that handles browser-based SSO, OAuth2 flows, and credential injection for AI agents. It extracts credentials (cookies, localStorage, OAuth tokens), encrypts them locally with AES-256-GCM, and injects them into HTTP requests — so agents can access authenticated APIs without ever seeing secrets.
Key capabilities:
- Browser SSO authentication for any website/SSO provider
- OAuth2 Client Credentials flow with automatic token refresh
- Encrypted credential storage (
~/.sig/credentials/) - Transparent HTTP proxy for agents (
sig proxy) - Direct authenticated requests (
sig request) - Command execution with injected credentials (
sig run) - Multi-provider support in single commands
Installation
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