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bhaveshbakshi633

live_session_server

by bhaveshbakshi633
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Python
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textToCadForAll

Let anyone turn a plain-language description into a real, manufacturable CAD design using the AI of their choice: Claude, GPT, or any other model that can call tools.

Why

Today AI can talk about designs but rarely produces parts a workshop can actually make. This project builds the missing layer between an AI model and a real CAD system (SolidWorks first), so the model can create, inspect, and fix geometry in real time while a human watches and steers.

Related MCP server: solidworks-mcp

Principles

  • Real designs only. Every part must be manufacturable and every assembly must be assemblable: standard stock, off-the-shelf parts, fasteners with tool access, valid sheet-metal flat patterns.

  • Model-agnostic. All capabilities are exposed as MCP tools so any AI client can use them.

  • API over simulated input. Drive CAD through its native API (COM for SolidWorks). Use mouse/keyboard UI automation only as a narrow fallback where no API exists.

  • Honest capability tiers. Every tool is labelled verified, pilot, or blocked. Pilot output needs human review; blocked means it does not work yet.

  • See the result. After each change the AI renders and checks the model visually and numerically.

Roadmap

  1. Live-session MCP server: read the user's current selection, view, feature tree, rebuild errors, and screenshots so the AI is aware of what the human is doing.

  2. Action tools: sketches, features, mates, dimensions, with undo after every step.

  3. UI-automation fallback for dialogs and options with no API.

  4. Design checks: interference, clearances, fastener access, sheet-metal rules, DFM.

  5. Support for other CAD systems and other AI clients.

Live-session server (SolidWorks)

live_session_server.py is a stdio MCP server that gives any AI client real-time awareness of a running SOLIDWORKS session. It only reads through the native COM API and never sends simulated mouse or keyboard input.

Tool

Tier

What it does

live_status

verified

Version, active document, unsaved/rebuild flags, selection count, in-context edit state

get_selection

verified

What the human selected: kind, owning component, click point, plane normal / cylinder axis and radius / circle centre / line endpoints, all in mm

get_view

verified

Rotation matrix, translation and zoom of the active view

get_feature_tree

verified

Features with type, suppression and error code; assembly components with fixed/suppressed state

get_rebuild_errors

verified

Only the features carrying errors, plus suppressed components

screenshot

verified

PNG of the graphics area, optionally from a named view with zoom-to-fit; the human's view is restored afterwards

rebuild

pilot

Rebuild and report errors

undo

pilot

Undo N steps (same as Ctrl+Z) to back out a rejected AI action

select_by_name

pilot

Select a named plane/face/feature/component for a following action

clear_selection

verified

Clear the selection

Verified on SOLIDWORKS 2026 SP3, Python 3.14, pywin32 312, mcp 2.2.

Install

pip install -r requirements.txt
claude mcp add --scope user sw-live -- python C:\path\to\live_session_server.py

Any MCP client works the same way (Cursor, Codex, Claude Desktop, ...): run python live_session_server.py over stdio. SOLIDWORKS must already be running at the same privilege level as the server.

Status

Live-session watch tools work. Action tools (sketches, features, mates) come next. Contributions and ideas are welcome.

License

MIT

This server cannot be deployed

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Resources

Related MCP Connectors

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