Schematic
The logical netlist. Place components and splices, connect their pins, and put the conductor on the connection itself.
The AI-native, collaborative, browser-based and versioned design ecosystem for wiring harness engineers
Schematic, layout, BOM and a TO-SCALE formboard, all in one live document. With an assistant that helps you at every step.
No credit card · 14 days · nothing to install
Schematic 
Wiring 
BOM & cut list 
Formboard
One harness, four views.
Draw the logic once. Routes, cut lengths, the BOM and a 1:1 formboard all come from the same live document. Edit any view and the others follow.
Schematic
Wiring
BOM & cut list
Formboard
The logical netlist. Place components and splices, connect their pins, and put the conductor on the connection itself.
The physical side: connectors, branch points and the routes between them. Decide where the bundle splits and add coverings to a route.
Parts and cut lengths, derived live from the model. Fix the harness and the numbers follow, then export the workbook to XLSX.
The manufacturing drawing at true 1:1 scale, kept in sync with the wiring. Export a full-size PDF for the build board.
One harness, four views.
Draw the logic once. Routes, cut lengths, the BOM and a 1:1 formboard all come from the same live document. Edit any view and the others follow.
Schematic Wiring BOM & cut list Formboard
Wiring
The physical side: connectors, branch points and the routes between them. Decide where the bundle splits and add coverings to a route.
BOM & cut list
Parts and cut lengths, derived live from the model. Fix the harness and the numbers follow, then export the workbook to XLSX.
Formboard
The manufacturing drawing at true 1:1 scale, kept in sync with the wiring. Export a full-size PDF for the build board.
Everything a harness team needs, in one live document.
Collaboration & history
Draw together, in real time.
Everyone edits the same live harness: cursors, drags and changes as they happen. Undo only reverts your own work, and every action lands in a history anyone can open read-only.
- Live cursors and presence
- Per-user undo
- Viewer, Editor and Admin roles
- History by day, snapshots read-only
AI assistant
An assistant that reads your harness.
Ask it to find real parts from trusted supplier sources, add them to your library, place them and connect the cavities. Every edit arrives as a proposal; nothing changes until you apply it.
- Reads CSV wire lists you attach
- Creates parts from supplier pages
- Generates a whole harness as one proposal
- Applied changes show up in history
Integrations
Fits the tools you already use.
Bring wire lists, supplier data and whole harnesses in; send full-scale drawings, BOMs and a complete JSON back out. KiCad and Onshape importers are on the way.
- Formboard PDF at true 1:1 scale
- BOM and cut list as XLSX
- Harness JSON round-trip
- KiCad and Onshape · coming soon
Parts & libraries
Real parts, versioned.
Connector housings, terminals, conductors, seals, splices. Every occurrence in a harness pins the exact version it was built with, so a library update never silently changes your design.
- Organization libraries and local parts
- Cavity counts on the part definition
- Exact version pinned per occurrence
- BOM rows follow the model
Agents & MCP
Bring your own agent.
HarnessHive ships an MCP server. Point Claude, ChatGPT, Cursor or your own agent at the workspace to read harnesses, BOMs, empty cavities and libraries. Tokens are read-only unless you opt in.
- Eight read tools for every token
- Writes behind an explicit opt-in
- Scoped to one workspace
- Revoke a token instantly
Works with
Join our community.
A small team building this with the people who use it. Come say hi, show us what you’re wiring, and hear about new things first.
Built for teams who actually build.
[public/teams/startups.webp]
Startups & machine builders
Ship the first harness without buying a seat of legacy EDA.
[public/teams/students.webp]
Student teams
Hand the harness over each season with its full history intact.
[public/teams/shops.webp]
Harness shops & freelancers
Send a 1:1 formboard and a clean BOM to the build bench.
Student teams we sponsor.
Formula Student teams across the globe, building their cars with our support.
