The Problem
AI coding tools are great at building things but terrible at knowing what to build. If you’re an agency or freelancer using Claude, Cursor, or v0 to ship code, the bottleneck isn’t writing — it’s the messy back-and-forth of getting client requirements nailed down and approved before you start.
Right now that’s some combination of PandaDoc, Jira, email threads, and crossed fingers. It doesn’t work well.
What Sigil Does
Sigil replaces that juggle with a single pipeline: Propose → Commit → Map → Deliver → Approve.
- Write proposals with a rich text editor, nested estimates, and AI-assisted drafting
- Send to clients via a portal where they can review, approve, or request changes
- Claude maps approved proposals into delivery stages with acceptance criteria
- Track staged delivery with explicit client sign-off before the next phase unlocks
The key constraint: nothing gets built until the client has explicitly approved what’s being built. Seems obvious, but most tools don’t enforce it.
Where It’s At
Core product is built — proposals, client portal, AI mapping, staged delivery, team RBAC, Figma integration for design review. Working through billing integration and polish before opening it up.