twarge/horizontal
Connect to Horizontal, review PCB designs, make undoable edits, and export fabrication files.
Set up or connect Codex or Claude Code to Horizontal and diagnose its MCP connection. Use for plugin onboarding, connecting to an open board or project, missing Horizontal tools, unavailable live state, or DOCUMENT_OPEN, AUTH_FAILED and TIMEOUT errors.
Change a Horizon/Horizontal design safely through the horizontal MCP tools — swap a part, add or remove components, rewire nets, redraw schematic wiring, move packages, or clear copper. Use for any apply_ops, remap_part, import_pool_part or place_component work, and before saving or committing design changes.
Generate and check fabrication and documentation outputs for a Horizon/Horizontal project — Gerbers, ODB++, drill files, BOM, pick-and-place, schematic PDF, STEP, board drawings. Use when asked to export, release or regenerate outputs, or when exported files are older than the design.
Review a board, schematic or circuit in the Horizontal app or a Horizon EDA project. Use for requests such as "review my board in Horizontal", hardware design audits, sanity checks, finding circuit or layout problems, or comparing parts, values and topologies with numbers.