Free MCP access for calculations
Free CNC calculator for ChatGPT and Claude
Use the same CNC calculators from a compatible ChatGPT or Claude client. The assistant finds the right tool, asks for missing information and receives calculated results with units, sources and notes.
Connect the public MCP server
Add this address as a remote MCP server in a compatible client. The feature name and availability depend on your client.
https://app.cnckalkulator.de/mcp
Transport: Streamable HTTP. The public server requires no login or API key. It provides free calculations, material search, skills and prompts.
Manage an authenticated connection for your own Pro dataThe complete calculation stays free
Individual calculators, material search, rule-based quote guidance and calculation scenarios are available through public MCP access without a Pro subscription. You provide the inputs; the server calculates the results.
Skills and prompts for drawing and quote
The included skills describe a traceable process: review documents, divide the drawing into image regions, document features, request missing parameters, plan manufacturing and check the quote.
- Distinguish observed values, confirmed data and assumptions.
- Ask specifically for missing dimensions and shop prices.
- Record tool calls, inputs, units and results together.
Compare scenarios traceably
Quantities, variants, cost changes and price negotiations can be calculated with complete inputs. The AI client asks the questions; calculation rules and totals remain in the shared tools.
Separate calculation and private data
Public access contains no private drawings or saved quotes. Personal Pro files and shop data require the appropriate authenticated access. A free calculation never starts a paid image analysis.
Frequently asked questions
Do I need Pro for quote calculation via MCP?
No. Public calculations, material search and calculation guidance are fully free for now. Separate permissions apply to personal Pro documents and saved Pro records.
Does MCP work with every ChatGPT or Claude plan?
That depends on the connection features available in your client and account. The connection page identifies the server and its capabilities. Availability in a particular client or plan is not guaranteed.
Can the assistant invent prices or approve quotes?
The guidance requires confirmed inputs and verifiable results. Missing information must be clarified. Technical or commercial approvals and sending are never granted by a calculation call.