Short answer: At the end of October 2026, a widely shared r/SolidWorks post said that MecAgent, an AI assistant for SolidWorks sometimes described as a “Cursor for CAD,” scanned local drives for CAD files and uploaded them, and that the then terms of the free plan granted a broad licence, including for training. 3Druck.com reported the post on 30 October 2026 and reported MecAgent’s reply: it apologised for unclear wording, said it does not collect data under the paid plan, said it had not used free-plan data for training so far, and said it was suspending the free plan and data collection until the terms were clearer. A post about that report by Mike Kalil on 30 October 2026 reached 14,459 impressions on X. The practical lesson is ordinary, and it is not limited to one vendor: read the data terms before you install an AI helper on a work machine, give it one project folder rather than a whole disk, and keep dated copies of the CAD files you care about in a place you control. A TimeBind cannot stop an installed tool reading your drive. It can date the exact file you kept.
Last checked 12 November 2026. General information for engineers, architects and designers who install AI helpers on CAD or BIM workstations, not legal, IT-security, export-control or professional-liability advice. We have not independently run MecAgent. The account below follows contemporaneous reporting of a Reddit post and of MecAgent’s public reply, plus the vendor’s current terms page. Terms change. Read the terms of any tool before you install it. A dated record does not stop software on your machine uploading a file, and it is not proof that a model trained on your work.
Table of Contents
What was reported
On 30 October 2026, the manufacturing commentator Mike Kalil posted on X about a Reddit thread on r/SolidWorks that was “making the rounds.” The post, which had 14,459 impressions, 121 likes, 8 reposts, 22 replies and 45 bookmarks when we read the public metrics, described MecAgent — marketed as a Cursor-like AI agent for SolidWorks — as facing a weekend PR problem after that thread. Other posts the same week repeated the same outline.
3Druck.com, a 3D-printing trade title, published a report the same day, “Uproar over MecAgent: AI assistant for SolidWorks allegedly uploaded CAD files in the background, provider responds.” According to that article, Reddit user u/Objective-Appeal-307 said a .NET helper launched by the application searched local drives for files with extensions including .sldprt, .sldasm, .slddrw, .step and .stl, grouped them into projects, and uploaded them to cloud storage on AWS, including files the user said they had never opened in SolidWorks. The user said they could not find an off switch on the free plan, and pointed to the terms then in force: section 5.2 as consent to scanning and uploading on the free plan, section 7.1 as a permanent, irrevocable licence including for AI training and disclosure to third parties, and section 7.5 as saying a deletion request does not revoke that licence.
3Druck reported that a MecAgent team representative replied in the thread, apologised for the unclear presentation, said the company does not collect data under the paid plan, said it had not used data from the free plan for training so far, and said that until the terms were worded more clearly MecAgent was suspending the free plan and data collection. Deletion requests, the report said, could be sent to the company’s support address.
We have not independently verified the traffic, the helper binary, or the historical wording of every clause. Treat the Reddit account as one user’s report, and MecAgent’s reply as the company’s public position as reported on 30 October. Before you install the tool now, read the current terms at the vendor’s site rather than a screenshot from late October. Terms can be edited after a scare.
What this means for anyone installing an AI CAD helper
The useful part of the story is not a verdict on one product. It is a checklist that applies to any AI assistant that sits on top of SolidWorks, Revit, AutoCAD, Rhino, Fusion, or a similar tool and asks for filesystem or application access.
- Free tiers can have different data terms from paid ones. Several posts about MecAgent claimed that the only listed off switch was to upgrade. Whether or not that remains true, it is a reason to read the free-plan section, not only the marketing page.
- Search the terms for “scan,” “upload,” “perpetual,” “irrevocable,” “training” and “sub-license.” If a deletion request does not revoke a licence, that sentence is easy to miss and hard to unwind later.
- Give the tool one folder, not a whole disk, if you install it at all. Client files, export-controlled models, and old STL archives you never meant to share can live many folders away from the part you have open.
- Work machines have extra duties. Employer policies, client confidentiality, and (in some US work) export-control rules can be in play when a tool uploads geometry. This page is not export-control advice; it is a reason to involve IT before you install a new helper on a workstation that holds client or controlled files.
- A pause is not the same as a deletion, and a deletion may not cancel a licence. If you already installed a tool whose terms worried you, use the vendor’s official support path and keep a copy of what you sent.
Practical checklist
- Before you install any AI helper on a CAD or BIM workstation, read the current data terms, including the free-plan section, and keep a dated copy of the terms as they stood that day (a PDF or a full-page save).
- If the terms allow scanning outside the file you opened, do not install the tool on a machine that holds other clients’ work until you have a written position from your firm.
- Sandbox the first test on dummy files in a dedicated folder, not on a live project library.
- Keep master copies you control of the parts, assemblies, drawings, and exchange files (STEP, IFC, DWG) that matter, in a folder that is not the tool’s working cache. For how to date a CAD, BIM or Figma file, see how to prove a CAD, BIM or Figma file existed before a date and, for AutoCAD specifically, how to prove an AutoCAD DWG existed before a date.
- Date the files, and a manifest of a folder, if you need a checkable record later. The free bulk SHA-256 manifest tool can hash a folder of drawings in the browser. A TimeBind records that an exact file existed by a date and still matches. It does not stop an installed tool uploading a copy, and it does not prove a model trained on your geometry.
What a TimeBind does and does not show
A TimeBind is a dated, checkable record that an exact file existed no later than a recorded time and still matches. The SHA-256 fingerprint is made in your browser and the file is never uploaded. The record is anchored to Bitcoin (a Merkle root in an OP_RETURN). Your first Pooled TimeBind is free; after that, TimeBinds start from US$5, and an ASAP TimeBind is US$15. See how it works.
For a CAD or BIM workflow, a useful TimeBind is often a particular part file, an issued drawing, an IFC or STEP export, or a zip of a milestone set. You can later show that this exact file existed no later than the recorded time and still matches. That can matter in a priority, handover or originality discussion about the file you actually had.
A TimeBind does not audit what software on your computer uploaded, does not prove a vendor honoured its terms, does not prove authorship or ownership of a design, and does not satisfy export-control or professional-record rules on its own.
Limits
We did not run MecAgent, inspect its traffic, or archive every historical version of its terms. Reporting from 30 October 2026 describes a user allegation, clauses the user cited, and a company reply that the free plan and data collection were being paused. The current terms may differ. Other CAD AI tools will have other terms. This page is not a finding that any one file was uploaded, trained on, or misused.
Tools that can help
Read the vendor’s current terms first — for MecAgent, that is currently mecagent.com/terms. On this site, prove a CAD, BIM or Figma file existed before a date and prove an AutoCAD DWG existed before a date cover dated records for design files. The free bulk SHA-256 manifest tool and the design-file timestamping hub are there if you want to fingerprint or date a set of drawings. See also the invention records hub if the files are part of a disclosure routine.
Before you install that add-in, the free AI CAD add-in checklist reviews the current terms, the files it could reach, and the dated copies you still hold. It cannot inspect an installer, and it is not legal advice.
Frequently Asked Questions
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Did MecAgent train a model on free users’ CAD files?
Not according to the company reply reported by 3Druck.com on 30 October 2026. MecAgent said it had not used free-plan data for training so far, and that it was pausing the free plan and data collection. We have not independently verified that statement, and a pause is not the same as a historical deletion.
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If I already installed the free plan, what should I do?
Read the current terms, stop using the tool if your firm does not accept them, and use the vendor’s official support path if you want to ask about deletion. Keep a dated copy of the terms you agreed to and of any support request. This is not legal advice, and a deletion request may not cancel a licence if the terms say it does not.
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Does a TimeBind stop a plugin uploading my drawings?
No. A TimeBind does not control software installed on your computer. It only records that an exact file you TimeBind existed by a date and still matches.
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Is this only a SolidWorks issue?
No. The MecAgent report is about one SolidWorks assistant. The same questions apply to any AI helper that wants filesystem or application access on a CAD or BIM workstation.
Sources checked
- Mike Kalil (@mikekalilmfg), post of 30 October 2026, https://x.com/mikekalilmfg/status/2116255125367029938 (public metrics read 12 November 2026: 14,459 impressions, 121 likes, 8 reposts, 22 replies, 45 bookmarks)
- 3Druck.com, “Uproar over MecAgent: AI assistant for SolidWorks allegedly uploaded CAD files in the background, provider responds,” 30 October 2026, https://3druck.com/en/programs/controversy-over-mecagent-ai-assistant-for-solidworks-allegedly-uploading-cad-files-in-the-background-provider-responds-02165004/
- MecAgent, Terms of Service, https://mecagent.com/terms (read 12 November 2026; terms may have changed since late October)
Date the drawings you keep yourself
Your first Pooled TimeBind is free, with no credit card required. After that, TimeBinds start from US$5, and an ASAP TimeBind is US$15. Click here to start, or see plans and pricing.
Related: AI companies paying for CAD files: what architects should keep.
Related: Revit Autodesk Assistant and Dynamo MCP: what architects should keep.
