Basalt
VerifiedDescribe an OT or cloud stack in plain English and get a compliant diagram
Product preview
Basalt
What it is
Basalt is an architecture diagramming assistant built with industrial control systems in mind. Engineers describe a cloud, hybrid or OT/ICS environment in plain English and the AI draws it, then accepts follow-up prompts to change it. Before rendering, a deterministic linter checks the design against Purdue model and IEC 62443 rules and blocks invalid topologies. A library of vendor icons covers brands such as Siemens, Rockwell, Schneider, Cisco and AWS, and a text-based diagram language offers a code-first route with live preview. Exports include versioned PDF and Word files with the reasoning behind each zone and conduit. It is aimed at OT security engineers and critical infrastructure teams.
Key features
- Prompt-to-diagram generation
- Purdue and IEC 62443 lint checks
- 1,880+ vendor icons
- Versioned PDF and Word exports
What we liked
- + Built specifically for OT and ICS work
- + Blocks topologies that break the rules
- + Exports carry design rationale
Worth noting
- · Free plan limited to 5 diagrams and PNG export
- · Starter price is quoted on annual billing
Editor's notes
More context from AI BirdView
Most diagram tools treat an industrial network like any other box-and-arrow drawing, and Basalt takes a different view. It pairs conversational AI drawing with a rules engine that knows the Purdue levels and IEC 62443 zones and conduits, so a design that crosses a boundary it should not is caught before it ever reaches a review meeting. That combination of speed and guardrails is the heart of its appeal.
- Plain-English prompts produce a first diagram, and further prompts edit it without redrawing by hand.
- A deterministic linter checks designs against Purdue and 62443 rules and refuses illegal topologies.
- More than 1,880 vendor symbols cover common industrial, networking and cloud equipment.
- Each change is tied to an entry in a compliance document, and the page says humans sign off on every change.
- A diagram-as-code language with live validation suits engineers who prefer text.
Basalt is best for OT security engineers, integrators and utilities that need diagrams auditors can follow, and it references frameworks such as NIST CSF and NERC CIP alongside 62443. The site notes it is free during early access, so a useful tip is to rebuild one existing network drawing there and compare what the linter flags against your last manual review.
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