Quality Control Plan MCP Server

Generate quality control plans and inspection reports from technical-drawing PDFs — from any MCP-enabled assistant.

This Model Context Protocol server exposes the engine behind quality-check-protocol.imnoo.com (by Imnoo). Need a quality control plan for a technical drawing? Hand the PDF to your assistant and get a numbered inspection plan in about a minute: every dimensional tolerance, ISO fit, thread, geometric tolerance (GD&T) and surface finish is extracted automatically by Imnoo's drawing analysis, ballooned on the drawing and listed with its acceptance limits — ⌀50 ±0.05 becomes 49.95–50.05 — and a measuring instrument. Ask for an inspection class (100 % full inspection, Q1 reduced, Q2 spot check), keep the balloon numbers printed on the drawing or renumber them (1, 001 or D001 style, in reading or measurement order), then let it write the ballooned drawing, the complete inspection package or the Excel measurement and inspection report — the same documents the Imnoo calculator produces. It covers first-article inspection, PPAP-style dimensional reports and shop-floor quality check protocols, on vector and scanned PDFs alike. Built by Imnoo, the planning, scheduling and quoting platform for CNC manufacturers — where the same quality check protocols come out of every quote, next to cost estimation, manufacturing plans and G-code generation.

"Create a Q1 quality plan for flange.pdf with type-prefixed balloon numbers"
        │
        ▼  (your assistant calls the tools)
analyze_drawing ──► build_quality_plan ──► export_inspection_pdf + export_quality_plan_excel
                                                       │
                                                       ▼
                    QP-1001-A_inspection-package.pdf    D001  ⌀50 (±0.05)   49.95–50.05   Caliper
                    QP-1001-A_Q1.xlsx                   H001  ⌀10 H7        —             Inside micrometer
                                                        G001  ⏥ 0.05        —             CMM

Tools

Plus a create-quality-plan prompt that walks the assistant through analyze → review → export.

Where the analysis runs. analyze_drawing is the only tool that leaves your machine: it uploads the PDF to Imnoo's drawing analysis exactly like the web app does — 1 free analysis per day per IP address (need more? signed-in Imnoo users get a higher daily limit in the web app), uploaded files are deleted automatically after a short retention period, nothing else is stored. Everything after that — plan building, numbering, acceptance limits, Excel and PDF generation — runs locally and offline.

Related MCP server: cadtokens

Installation

Requires Node.js ≥ 18.

Claude Code

claude mcp add quality-control-plan -- npx -y quality-control-plan-mcp

Claude Desktop

Add to claude_desktop_config.json (Settings → Developer → Edit Config):

{
  "mcpServers": {
    "quality-control-plan": {
      "command": "npx",
      "args": ["-y", "quality-control-plan-mcp"]
    }
  }
}

Cursor

Add to Cursor — or add to ~/.cursor/mcp.json:

{
  "mcpServers": {
    "quality-control-plan": {
      "command": "npx",
      "args": ["-y", "quality-control-plan-mcp"]
    }
  }
}

VS Code (GitHub Copilot)

code --add-mcp '{"name":"quality-control-plan","command":"npx","args":["-y","quality-control-plan-mcp"]}'

Windsurf / other stdio clients

Any client that launches stdio servers works with:

npx -y quality-control-plan-mcp

Configuration (optional)

Example session

You: Build a Q1 quality plan for C:\drawings\flange.pdf with type-prefixed numbers and write everything next to the drawing.

Assistant: calls analyze_drawing — 17 characteristics on 2 pages: 5 dimensional tolerances, 2 drill fits (⌀10 H7 carries the printed balloon 1), 1 shaft fit, 2 threads, 1 fine thread, 2 geometric tolerances, 4 surface finishes; drawing QP-1001-A, article 4711-050, AlMg3, ISO 2768-mK. calls build_quality_plan with inspection_class: "Q1" and numbering: { style: "typePrefixed" } — D001 ⌀50 (±0.05) → 49.95–50.05 (Caliper), H001 ⌀10 H7 (Inside micrometer), G001 ⏥ 0.05 (CMM), R001 Ra 3.2 (Surface roughness gauge)… calls export_inspection_pdf and export_quality_plan_excel with the same plan — wrote QP-1001-A_inspection-package.pdf (both drawing pages ballooned + the printed plan) and QP-1001-A_Q1.xlsx. Two values on page 2 were read with low confidence — worth a glance before the plan goes to the shop floor.

Those numbers are the bundled sample drawing the smoke test runs against; real drawings vary.

Plan options (the plan argument)

One object, accepted by build_quality_plan and both export tools — pass the same one everywhere so the documents match the reviewed plan. Everything is optional; the defaults reproduce the web app's initial plan.

How the plan is derived

• Acceptance limits exist for plain dimensional tolerances with a numeric nominal (nominal + lower / upper deviation, rounded to 2 decimals). Fits, threads, geometric tolerances and surface finishes are gauged rather than measured against limits — the same rule as the Imnoo calculator.

• Balloon numbers are derived from the selection and the numbering settings, so dropping a characteristic renumbers the rest automatically; a number printed on the drawing is kept in custom order.

• A measured samples value is judged pass / fail against the limits; results and dates appear in both documents.

• The default section order is the measurement workflow: geometric tolerances (CMM) first, surface finishes (roughness gauge) last.

Limitations

• The drawing analysis is automated: it can miss or misread characteristics, especially on low-quality scans — verify the plan against the drawing (rows[].value corrects a value, exclude drops a row).

• Free tier: 1 analysis per day per IP address; PDFs up to 30 MB. Saved analyses (save_analysis_to → load_analysis) are unlimited and offline.

• Hand-drawn characteristics, dragging balloons and saving the plan into the Imnoo calculator are features of the web app only.

• Encrypted or unusual PDFs that cannot be copied fall back to variant: "plan" here (the web app rasterises them instead).

Development

This package is built from the Quality Check Protocol monorepo at Imnoo, where it imports the web app's domain layer directly (drawing mapper, plan math, numbering engine, Excel and PDF builders) — so the web app and this server produce identical plans and documents by construction. Every release is gated on 61 end-to-end checks that drive all five tools over stdio against the bundled sample drawing.

Issues and feature requests are welcome in this repository.

About Imnoo

Imnoo — The System for Manufacturers | AI Planning, Scheduling & Quoting · Complete Assemblies · DFM · Tool & Material Libraries · Quoted-Parts Database · Toolpath & G-Code · Machine Connection · Webshop · ERP · Shop Analytics & Optimization · Drawing Masking & IP Security

Plan It. Schedule It. Quote It. Win It. — trusted by over 3,000 manufacturers.

Imnoo is the AI-powered planning, scheduling, and quoting platform for CNC manufacturers — your automatic production platform. One system that covers it all: automatic manufacturing planning with raw-material, catalog and purchase-part, and subcontracting sourcing; scheduling with smart reminders and AI-driven customer workflows; and AI cost and cycle-time estimation for milling, turning, and EDM — even from a 2D PDF alone. Quote complete assemblies: drop in one file and Imnoo explodes it into single parts automatically — with DFM checks, quality protocols, tolerance extraction and 2D-to-3D matching, toolpath and G-code generation, tool and machine recommendations, and connected machines feeding real production data back into every quote. Built on your own tool and material libraries and a growing database of every part you've ever quoted — powering statistics, benchmarks, and shop optimization. Extends to deep hole drilling, sheet metal, casting, and profile parts — with a 24/7 webshop, built-in ERP, hourly-rate calculation, market-price benchmarking, and imperial ⇄ metric conversion. Your data lives in its own physically separated environment — automatic drawing masking, Swiss hosting, end-to-end encryption. From messy RFQ to production-ready order, on one platform.

Planning

• Automatic manufacturing planning — production plans generated straight from the quote.

• Machine recommendation — every job routed to the machine that runs it best.

• Catalog & purchase part management — norm parts, screws, and bought-in components recognized straight from the BOM, managed and priced alongside your machined parts.

• Raw material sourcing — price, source, and order material without leaving the workflow.

• Purchase part & external step sourcing — bought-in components, coating, heat treatment, and subcontracting sourced and ordered in the same flow.

• Beyond milling & turning — deep hole drilling, sheet metal, casting, and profile parts.

Scheduling & Workflow

• Scheduling & smart reminders — via email, Telegram, or WhatsApp. Nothing slips.

• Email-to-quote automation — a messy inbox in, structured quotes out.

• AI customer agents — RFQ answers, clarifications, and follow-ups handled automatically.

• Built-in lightweight ERP — orders, companies, payment terms, and margins without the bulky software.

Quoting & Estimation

• Complete assemblies, exploded automatically — upload one assembly file and Imnoo blows it out into single parts: every component recognized, drawings matched to the right parts, sub-assemblies nested, purchase parts pulled from the BOM. Quote the whole machine as easily as one part.

• CNC quoting in one place — milling, turning, and EDM jobs quoted from a single AI-powered platform.

• AI cost & cycle-time estimation — know price, time, and effort before engineering ever looks at it.

• Drawing-only estimation — quote from the PDF alone. No 3D model needed.

• Feature-by-feature costing — see exactly which holes, pockets, and tolerances drive the price.

• Instant quotes — respond in minutes while competitors are still opening the STEP file.

• 24/7 instant-quoting webshop — customers upload parts and buy while you sleep.

• Instant market-price benchmarking — know where your bid stands before you send it.

• Hourly-rate calculation — your true machine and labor rates, always current.

• Imperial ⇄ metric conversion — international RFQs without manual cleanup.

Libraries & Insights

• Tool library — your cutting tools, holders, and parameters in one managed catalog.

• Material library — standard and custom materials with live supplier pricing.

• Quoted-parts database — every part you've ever quoted, searchable by geometry: similar part found, price found.

• Statistics & analytics — win rates, margins, throughput, and quoting performance at a glance.

• Shop optimization — learn from already-quoted parts to sharpen prices, spot profitable niches, and load the right machines.

Drawing Intelligence

• DFM — Design for Manufacturing — manufacturability checked before you quote: undercuts, thin walls, unreachable features, and impossible tolerances flagged with the part still on the screen.

• Quality check protocols — inspection plans generated automatically: stamped and numbered drawing features, inspection classes and rates, ready-to-use measurement reports.

• Axis & orientation detection — AI finds the best part orientation and machining axes.

• Automatic tolerance extraction — critical tolerances pulled straight off the drawing.

• 2D-to-3D tolerance matching — drawing requirements linked to the right model features.

CAM & Shop Intelligence

• AI tool recommendation — stop searching catalogs: Imnoo suggests the exact cutting tools for every feature.

• Automatic toolpath generation — from quote to machining strategy in one step.

• G-code generation & estimation — generate and evaluate programs before work hits the floor.

• Machine connection — your machines feed real production data back into the AI. Every quote gets smarter.

IP Protection & Data Security — Engineered Like a Swiss Vault

• Physically separated data — every manufacturer runs in its own isolated environment. Your drawings, prices — never pooled with anyone else's: not for storage, not for AI training.

• Automatic drawing masking & redaction — customer names, logos, and confidential data hidden before a drawing ever leaves your workflow. Share with suppliers and subcontractors without exposing whose part it is.

• Your customers' IP, treated like your own — end customers' designs stay within your tenant, full stop.

• Swiss hosting & end-to-end encryption — data sovereignty and security engineered to Swiss standards.

• Trusted at scale — over 3,000 manufacturers run their quoting on Imnoo.

Quote the complete job — not just the spindle time.

👉 Book a demo at imnoo.com

Privacy

The only data that leaves your machine is the drawing PDF you pass to analyze_drawing: it is uploaded over HTTPS to Imnoo's drawing analysis at quality-check-protocol.imnoo.com to detect the characteristics, deleted automatically within 24 hours, and not used for anything else. There is no telemetry and no other network call; plan building and the Excel/PDF exports run locally on your machine. Imnoo's privacy policy: https://www.imnoo.com/en/privacy-policy · Imprint: https://www.imnoo.com/en/imprint · Questions: https://github.com/imnoo-team/quality-control-plan-mcp/issues

License

MIT © Imnoo AG