Private beta · macOS
Not a design doc nobody has opened since last quarter. Not the one engineer who remembers why. Idrisil is a living canvas for the decisions your product makes, readable by your team and by any AI agent.
The problem
The spec said one thing. Six edge cases and two incident fixes later, the code does something else, and nothing marks the moment it happened.
The onboarding doc describes v1 of the flow. Your product is on v4.
The person who knew why a rule existed left last spring, mid-handoff.
An AI agent asked to fix checkout reverse-engineers intent from code, and gets it wrong in ways nobody notices until a customer does.
How it works
Idrisil replaces prose with a real decision tree of flows, nodes, and edges. Every node holds the context prose would otherwise carry: the why, the edge cases, the open questions.
A project is plain files next to your code, not a server or a proprietary format. Change the flow, and the source of truth changes with it. Any coding agent can read the exact map you do.
A packaged agent skill goes further than reading: it teaches Claude, or another coding agent, the flow format itself, so the agent can add nodes, wire new edges, and extend a flow directly. The result is a functional business logic artifact the agent built and you can trace, not prose it guessed at.
Core features
Made to fit you
Light, dark, or match your system. Pick the default violet, or one of four muted alternates.
Every mouse action has a key too. The full list is one click away, inside the app.
Larger text and a color-blind-friendly palette for edges and nodes, one tap away.
Who this is for
If a decision branches, it can go on a canvas. These examples ship inside Idrisil, ready to open.
Every example above is a real bundled project, under "Not sure where to start? Open a working one first." Opening one always makes a fresh copy. The original is never touched.
Where this is headed
Linux, iPadOS, and Android are next. Tell us once below, and we will reach out as each one opens.
Technical FAQ
No. Idrisil runs fully on your computer. You can use it on a plane or with the network off. Idrisil does not check for updates or send data over the network during normal use.
Idrisil stores each project as plain files in a folder you choose on your own computer. Idrisil also keeps a small settings file for the app itself, such as your theme choice and recent projects list, in your user folder.
Yes. A project is a folder of plain text files. Point any coding agent at that folder, and it can read the same flows and notes you see in the app. A packaged agent skill goes further: it teaches the agent the flow format itself, so it can add nodes and wire edges to build out real logic, not only read what a person already drew.
Each flow and canvas saves as a plain text spec file next to your code. The format is documented and stable, so other tools and scripts can read it too.
No. Idrisil has no login and no account system. You open a project folder and start working.
No, for normal use. One optional feature exports a canvas to a separate app called tldraw offline, if you already have it installed. Idrisil works fully without it.
Your projects stay on your computer as plain files. Idrisil does not lock your work into a database or a server, so ending the beta does not delete or change your files.
The current beta runs on macOS. Linux, iPadOS, and Android support is planned. You can leave your email on this page to hear about each one.
Yes. A project is a folder, so you can share it the same way you share any folder, such as a shared drive or version control. Idrisil does not sync projects for you during this beta.
Use the note field on the beta request form on this page. Once you have access, the same channel works for bug reports and feature requests.
Privacy and terms
Idrisil does not track you. The application makes no network calls during normal use. It does not send analytics, usage data, or crash reports anywhere. Your projects stay on your own computer.
One optional feature connects to a separate app called tldraw offline, if you have it installed. That connection stays on your own computer and never reaches the internet.
This page has a form to request beta access. If you submit it, we store the email address and any optional answers you type. We use this information only to contact you about the beta. We do not sell it, and we do not share it with anyone else.
This page does not use cookies, trackers, or analytics scripts beyond what is needed to load the page itself.
Idrisil is beta software. Expect rough edges. Features can change or break between updates.
Idrisil is free during the beta. We do not charge for access, and we do not ask for payment information at any point in this process.
Your project files are plain files on your own computer at all times. You keep them if you stop using Idrisil, and you keep them if the beta ends.
This is an open, ongoing project. If a term here needs to change, we will update this page.
Get access
Idrisil is on TestFlight now — the link below drops you straight into the beta, no waiting.
Not on a Mac yet, or want to hear about Linux, iPadOS, or Android? Leave your email and we'll keep you posted.
We'll email you as other platforms open up.