Corvus logo

Open-source planning ledger

Your AI thinking partner
for new ventures

Corvus helps you think through decisions when starting something new. An AI chat companion that extracts forks, obligations, and decisions into a structured timeline — so you can see your plan take shape as you talk it through.

Corvus Ledger — chat sidebar, timeline, and decision log

Huginn (chat) on the left, timeline in the center, Muninn (decision log) on the right

How it works

Forks

Decision points with multiple paths. Talk through your options and Corvus tracks them as a fork — choose a path when you're ready, dismiss the rest.

Obligations

Things that need to happen. As you discuss your venture, Corvus extracts action items and tracks their state — todo, done, parked, or delegated.

Decisions

An authoritative log of what you've decided. Every path chosen and obligation resolved is recorded in Muninn — your venture's decision history.

How Corvus evolved

From a domain-specific prototype to a general-purpose thinking partner.

Jan 2026

Started as a venture planning tool

The original idea was a tool that could tell you what you didn't know yet — the steps and requirements you wouldn't discover until you were already in motion. To test it, we built a rules engine loaded with one narrow slice of domain knowledge: starting an LLC for software development. The rules worked, but they weren't the point.

The grammar

Flat lists broke down. Fork/Path/Obligation emerged.

You can't represent “here are three options, pick one” as siblings in a flat list. The fix was hierarchical: Forks contain Paths. Choosing a path is the decision. This grammar turned out to be universal — every project produces decision points and commitments.

The ledger

Decisions became append-only, like a financial ledger

You don't edit history — you append a new decision that references the old one. The history shows the change of mind, not a retroactive edit. This was the moment the “ledger” metaphor became load-bearing, not decorative.

Real users

Tested outside the original domain — it worked immediately

People outside the original domain tried it — and it worked immediately. A compliance planner and a nonfiction author both had the same experience: AI conversations full of decisions, but no way to extract or maintain that structure. Neither cared about LLCs. They cared about the interaction model.

The shift

Rules engine out. Thinking partner in.

The LLM itself recognizes decision points in any domain — no rules engine needed. Huginn was reframed from an extraction engine to a thinking partner. Be curious, let ambiguity sit, surface structure when you see it. Never be pushy.

See it in action

Watch a venture plan take shape through conversation

Corvus time travel demo — scrubbing through conversation history
Chat conversation flowing into timeline entries
Fork detail view showing decision paths

Interested in Corvus as a hosted product?

The open-source version runs locally. If you'd prefer a hosted version with collaboration, persistence, and more — leave your email and we'll let you know.

Open source

Corvus is released under the AGPL-3.0 license. Run it locally, read the source, contribute back. Your planning data stays on your machine.