Skill

klayoutclaw:geometry

Adds rectangles, polygons, paths, cells, and instances to KLayout layouts via Python CLI scripts and MCP execute_script tool. Use for drawing shapes or chip geometry.

Python

cli-tools

automation

npx claudepluginhub caidish/klayoutclaw --plugin klayoutclaw

Tool Access

This skill uses the workspace's default tool permissions.

Preview

CLI scripts for creating geometry in KLayout via the MCP server's `execute_script` tool.

Supporting Assets

scripts/add_instance.pyscripts/add_path.pyscripts/add_polygon.pyscripts/add_rect.pyscripts/create_cell.py

SKILL.md

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Stats

Stars15

Forks3

Last CommitMar 8, 2026

Actions

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KLayout Geometry Skills

CLI scripts for creating geometry in KLayout via the MCP server's execute_script tool.

Each script connects to KLayout at 127.0.0.1:8765 and runs pya code to create shapes.

Prerequisites

KLayout running with KlayoutClaw plugin (v0.3+)
A layout must be open (use create_layout tool first)

Scripts

All scripts live in scripts/ relative to this skill. Coordinates are in microns.

add_rect.py — Add a rectangle

python scripts/add_rect.py <cell> <layer> <datatype> <x1> <y1> <x2> <y2>

Example: python scripts/add_rect.py TOP 1 0 -50 -12.5 50 12.5

add_polygon.py — Add a polygon

python scripts/add_polygon.py <cell> <layer> <datatype> <x1,y1> <x2,y2> ...

Example: python scripts/add_polygon.py TOP 1 0 0,0 10,0 10,10 0,10

add_path.py — Add a path with width

python scripts/add_path.py <cell> <layer> <datatype> <width> <x1,y1> <x2,y2> ...

Example: python scripts/add_path.py TOP 1 0 5 0,0 50,0 50,50

create_cell.py — Create a new cell

python scripts/create_cell.py <cell_name>

Example: python scripts/create_cell.py CONTACT_PAD

add_instance.py — Place a cell instance

python scripts/add_instance.py <parent> <child> [x] [y]

Example: python scripts/add_instance.py TOP CONTACT_PAD 100 200

Workflow

For simple shapes, call scripts directly. For complex designs with many shapes, prefer calling execute_script via MCP with a single Python block — this avoids per-shape HTTP round trips and is much faster.

# Example: batch geometry via execute_script
tool_call("execute_script", code="""
dbu = _layout.dbu
li = _layout.layer(1, 0)
for x in range(0, 100, 10):
    _top_cell.shapes(li).insert(pya.Box(int(x/dbu), 0, int((x+5)/dbu), int(5/dbu)))
""")