Service type
CAD Platform Plugin Development
AutoCAD Plugin Development
AutoCAD automation built for production.
AutoCAD .NET API development, AutoLISP-aware modernization, and host-abstraction architecture for teams automating drawing creation, drawing updates, and structured-data-to-CAD workflows. Bounded scope, zero scope creep delivery.
In short
AutoCAD .NET API plugin development and AutoLISP-aware CAD automation modernization, delivered in bounded scopes (60-hour engagements typical). Best fit when legacy AutoLISP, AutoCAD customization, drawing standards, and structured engineering data need a safer bridge into production C#/.NET workflows.
Service command
Scope the system before selling the sprint.
Target buyer
Engineering and product teams shipping AutoCAD, MicroStation, SolidWorks, or mixed-CAD workflow tooling to internal users or end customers.
Operating model
Discovery -> scope -> build -> handoff
Buyer answer
Is CAD Guardian the right path for this service?
CAD Guardian LLC provides founder-led CAD Platform Plugin Development for Engineering and product teams shipping AutoCAD, MicroStation, SolidWorks, or mixed-CAD workflow tooling to internal users or end customers. Use this page when the production system needs scoped architecture, implementation, and handoff without a large vendor chain.
Strong fit signals
- AutoCAD .NET plugins that need to ship to production with deployment, versioning, and upgrade support.
- Legacy AutoLISP routines, AutoCAD scripts, or drafting macros that need triage, standardization, or a bridge into C#/.NET automation.
What to send
- System or workflow causing drag
- Current failure mode and business impact
- Autodesk Inventor API, MicroStation, SolidWorks, CAD, quote/BOM, PDF/DXF, label, .NET, SQL, ERP, PDM/PLM, or ACC environment
- Timeline, access constraints, and decision owner
- What a successful first phase must prove
First paid step
A $50 discovery call produces a written go/no-go recommendation, risk notes, and the first scoped phase if the problem is a fit.
Decision proof
2 related sanitized case study surfaces appears on this page before the final inquiry.
Outcomes
60 hours
Bounded scope on past cross-platform plugin migration
Zero
Scope-creep incidents on bounded plugin engagements
Single
Codebase targeting multiple CAD hosts via adapter pattern
Execution path
AutoCAD .NET add-in or CAD-host adapter with host-abstraction layer (so you can target MicroStation, SolidWorks-adjacent workflows, or other CAD hosts later without a rewrite).
AutoLISP and legacy AutoCAD automation audit: what to keep, refactor, retire, or migrate into a C#/.NET command, plugin, or structured-data workflow.
Structured-data-to-drawing plan for automating drafter-ready AutoCAD outputs from validated engineering inputs.
Deployment package (MSI/MSIX/ClickOnce) with versioning and CI/CD-friendly build.
What you receive
- AutoCAD .NET add-in or CAD-host adapter with host-abstraction layer (so you can target MicroStation, SolidWorks-adjacent workflows, or other CAD hosts later without a rewrite).
- AutoLISP and legacy AutoCAD automation audit: what to keep, refactor, retire, or migrate into a C#/.NET command, plugin, or structured-data workflow.
- Structured-data-to-drawing plan for automating drafter-ready AutoCAD outputs from validated engineering inputs.
- Deployment package (MSI/MSIX/ClickOnce) with versioning and CI/CD-friendly build.
- Test harness covering host adapter behavior so future CAD upgrades have a verification surface.
- Architecture documentation describing the seams, ready for an internal handoff or follow-on contract.
Best fit / not a fit
Best fit
- AutoCAD .NET plugins that need to ship to production with deployment, versioning, and upgrade support.
- Legacy AutoLISP routines, AutoCAD scripts, or drafting macros that need triage, standardization, or a bridge into C#/.NET automation.
- Teams maintaining a CAD plugin across multiple hosts (AutoCAD, MicroStation, SolidWorks-adjacent workflows, etc.) who want a single codebase.
- A&E or manufacturing teams automating AutoCAD drawing creation and updates from structured engineering/data inputs.
- Buyers who want a bounded-scope engagement with clear acceptance criteria, not open-ended T&M.
- Engineering teams building configurators, drawing automation, or CAD-to-data pipelines on AutoCAD.
Not a fit
- One-off AutoLISP-only drafting macros with no modernization, standardization, data, or handoff component.
- Pure end-user AutoCAD support or template authoring.
Related case studies
Energy & electric substations company
Platform-Agnostic Plugin Migration
The engagement succeeded because it treated the migration as an abstraction boundary problem. Core WPF application logic was decoupled from CAD host APIs, enabling a single codebase to target multiple platforms.
Read the study →Enterprise engineering team
CAD Automation Modernization
The engagement succeeded because CAD automation was treated as an engineering system: reusable UI boundaries, host-specific adapters, structured drawing data, explicit runtime evidence, and owner-ready handoff notes all mattered.
Read the study →Glossary
- AutoCAD .NET API
- The managed programming interface for building production AutoCAD commands, plugins, automation, and integrations in C# or other .NET languages.
- AutoLISP
- AutoCAD scripting language often used for close-to-the-drawing automation, command shortcuts, drawing updates, standards enforcement, and legacy CAD workflow customization.
- Structured-data-to-drawing automation
- A workflow that validates engineering inputs from spreadsheets, databases, APIs, or forms and turns them into drafter-ready CAD drawing updates or generated outputs.
- Host abstraction layer
- A boundary that keeps shared plugin behavior separate from AutoCAD, MicroStation, Inventor, SolidWorks, or other CAD-host-specific APIs.
- CAD-hosted plugin
- A desktop extension that runs inside a CAD application and uses that host API for drawing access, commands, selection, and UI integration.
- Adapter pattern
- A design pattern that translates each CAD host API into a shared contract so one core codebase can support multiple platforms.
Get Started
Start with a $50 Discovery Call
We assess mutual fit, scope the autocad plugin development problem, and deliver a written go/no-go recommendation. No commitment beyond this call.
Discovery Call
$50 · 30 minutes. We assess mutual fit, scope the problem, and deliver a written go/no-go recommendation. No commitment beyond this.
Scope & Pricing
You receive a clear proposal with fixed scope, timeline, pricing, and success criteria — a document your team can evaluate internally.
Contract
Simple MSA + Order Form. No multi-year lock-ins. Timelines and deliverables live in a shared project tracker, not buried in legal.
Kickoff & Delivery
Shared roadmap with task owners, weekly check-ins, and a named point of contact. I project-manage delivery the same way I would an internal priority.
FAQ
AutoCAD Plugin Development questions
FAQ
Yes. Cross-platform plugin migration is a delivered pattern — see the platform-agnostic plugin migration case study. Typical engagements bound the work to 60 hours with explicit acceptance criteria.
Yes when the engagement is software/workflow automation rather than drafting-only work. SolidWorks support is scoped around API feasibility, data extraction, BOM/model workflow, add-in boundaries, and integration with .NET or enterprise systems.
Yes when AutoLISP is part of a larger CAD automation or modernization problem: legacy routine triage, AutoCAD drawing standardization, structured-data-to-drawing automation, or migration into C#/.NET AutoCAD API commands. Tiny one-off drafting macros with no architecture or handoff component are usually better handled by a pure drafting-support specialist.
Yes. The right first phase maps the data shape, drawing standards, title-block or attribute targets, validation rules, and drafter review expectations before choosing AutoLISP, AutoCAD .NET, scripts, or a hybrid path.
The lesson is to avoid turning quick scripts into invisible production systems. AutoLISP is valuable for close-to-the-drawing automation, but production workflows need naming standards, validation, logging, version control, test drawings, handoff documentation, and a migration path when the workflow outgrows scripting.
Deployment via MSI, MSIX, or ClickOnce depending on environment. CI/CD pipelines build per-version artifacts so AutoCAD 2024 and 2025 users can each receive a compatible build.
API surfaces are abstracted from business logic, and the build pipeline targets each supported AutoCAD version. Upgrade rehearsal runs in a separate environment before production rollout.
Yes when the shared logic dominates host-specific logic. The pattern is a host abstraction layer with one adapter per CAD platform. The cross-platform plugin migration case study delivered exactly this.
Ready to scope your autocad plugin development engagement?
Start with a paid discovery call. You get a written go/no-go recommendation — no commitment beyond that.