The AI PCB design tool your agent can actually drive

Schema is a desktop schematic capture and PCB layout tool. Describe a circuit in plain English and an agent places the parts, wires the nets, routes the copper and runs the checks — through the same commands you use yourself. Reads your KiCad and Altium libraries. Free to start on macOS, Windows and Linux.

The Schema PCB editor: a small two-layer board with an inductor, a resistor, a capacitor and an IC inside the board outline, with the layer and net lists on the left and the Schema Assistant panel on the right.

Schema at a glance

What it is: Desktop schematic capture and PCB layout, with an AI agent that drives the editor
Platforms: macOS on Apple Silicon; Windows and Linux on x86-64 and arm64
Price: Free plan with monthly agent credits; extra credits sold in packs
Reads: KiCad symbol and footprint libraries, Altium schematic libraries
Writes: Gerber RS-274X, Excellon drill (plated and non-plated)
Checks: ERC on the schematic, DRC on the board, violations placed on the canvas
Agent surface: 74 documented commands, identical for you and the agent
Latest version: 1.0.1

The whole loop, in one tool

Schematic to fabrication

Capture a schematic, push the netlist to a board, place footprints, route the copper, pour the ground plane, and export Gerber and Excellon drill files.

An agent surface, not a macro language

A command layer built for perceive / act / verify / recover: an agent can describe the board, make a change, run DRC, look at a render, and undo when it gets it wrong.

Your existing libraries

Reads KiCad symbol and footprint libraries and Altium schematic libraries directly. Point Schema at the parts you already have and keep working.

Rules checked as you go

Clearance, annular ring, edge clearance, unconnected nets and silkscreen conflicts are checked against per-net-class rules, with every violation placed on the board.

Native compatibility

Import your existing KiCad and Altium projects. Work collaboratively on the same files without the hassle of manual conversion or vendor lock-in.

Schematic editor

Capture logic with fluid precision

Build your circuit seamlessly. Schema provides a fast, intuitive canvas for wiring up components, managing net labels, and establishing your design intent before laying out the board.

Native support for KiCad and Altium symbol libraries
Smart wiring, bus support, and hierarchical sheets
Real-time ERC (Electrical Rules Check) for catching errors early
Transition back and forth between schematic and PCB seamlessly with integrated tabs

PCB editor

Layout that holds its own rules

Place footprints from your libraries, route with walk-around collision handling, and pour copper that respects pad clearances the way a fabricator expects.

Interactive routing with 45° and orthogonal constraints, vias, and net-class track widths
Zone fill with per-pad clearance, thermal-relief settings and island removal
Live ratsnest and joint-based connectivity as the board changes
Gerber RS-274X and Excellon drill export, including plated and non-plated splits

Start here

Guides for the things people actually want to do first.

GuideHow to make a PCB schematic with AIThe full loop, from a one-line description to a checked schematic.GuideText to schematicWhat a plain-English prompt turns into, command by command.GuideHow to import a KiCad libraryPoint Schema at symbol and footprint libraries you already have.GuideAI PCB routing explainedHow an agent routes copper, and where it hands back to you.DocsCommand referenceEvery one of the 74 commands the editor and the agent share.InstallDownload SchemaBuilds for macOS on Apple Silicon, and for Windows and Linux on x86-64 and arm64.

How Schema compares

Honest comparisons against the tools you are probably choosing between — including what they do better.

ComparisonBest AI PCB design softwareSix tools compared on licence, platform, libraries and agent surface.ComparisonBest AI schematic generatorsWhich tools turn a description into an editable schematic.ComparisonFree AI PCB design toolsWhat "free" actually means in each tool, without the asterisks.

Frequently asked questions

What is Schema?

Schema is a desktop AI PCB design and schematic capture tool for macOS, Windows and Linux. You capture a schematic, push it to a board, place footprints, route copper, pour ground planes, run design-rule checks and export Gerber and Excellon drill files. An AI agent can do any of those steps for you by issuing the same commands you would issue yourself.

How much does Schema cost?

There is a free plan that includes a monthly allowance of agent credits. Using the AI agent spends credits, and additional credits are sold in packs. Drawing, routing and exporting by hand are not metered. Full detail is on the pricing page.

Can Schema open my KiCad files?

Yes. Schema reads KiCad symbol and footprint libraries directly, so parts you have already curated work without conversion, and it can convert a KiCad schematic into a Schema project. It also reads Altium schematic libraries.

What does "an EDA tool your agent can actually drive" mean?

It means the AI is not a separate chat window bolted onto the side. The editor exposes 74 documented commands — place a symbol, draw a wire, route a trace, fill a zone, run DRC, render the board, undo — and both you and the agent act through that same surface. The agent can therefore look at the board, change it, check its own work and undo when it gets something wrong.

Is Schema related to schema.org or database schemas?

No. Schema is an electronic design automation tool for designing circuit boards. It has no connection to schema.org, to database schemas, or to the psychology term.

What formats can Schema export for fabrication?

Gerber RS-274X for copper, silkscreen, solder mask and paste layers, and Excellon drill files including separate plated and non-plated output — the set a board house expects.

Design a board with an agent that shows its work

Free to start on macOS, Windows and Linux. Bring your existing KiCad and Altium libraries.

Read the docs →