The agent-first IDE for physical engineering
Not renders. Not meshes. Impulse is an AI engineer with its own world model, verification, and an industrial CAD kernel — it plans entire products, builds real parametric geometry, and proves every change against physical reality before it commits. Manufacturable STEP out, whenever you ask.
A real session — scope · build · verify · edit · propagate
The problem
Agents now write, test, and ship half the world's code. Meanwhile, the things that actually get manufactured are still drawn click by click — and every “AI CAD” tool so far dodges the hard part: one hands you a shape and leaves the checking to you; another autocompletes inside your old CAD and still needs you to confirm every move. Neither can be trusted with atoms — and atoms are unforgiving. A wrong guess isn't a bug. It's a part that doesn't fit, a mold that gets scrapped, a month that gets lost.
◷ Weeks of drafting for known engineering
Enclosures, mounts, gear trains, fixtures, rev N+1 — the boring 80% of product development is still drawn by hand by the most expensive people in the building.
◇ Models that know dimensions, not reasons
A parametric file knows a wall is 2mm. It doesn't know why — what it mates with, what load it carries, what happens three parts away when you change it. That knowledge lives in someone's head, and it leaves when they do.
△AI that can't be trusted with atoms
Generated geometry looks right until the first print. Without a system that measures what the AI actually did, every output is a claim you have to verify by eye — which is slower than doing it yourself.
Meet the system
An agent alone can't be trusted with atoms. So we built the machine that makes it trustworthy — four systems fused into one: an agent that reasons, a world that remembers, a verifier that never blinks, and an engine that forges real geometry. It holds the entire product, takes your edit, and tells you what breaks before it breaks. Nothing else on the market goes this deep.
FORGE
A whole product, a single part, or one stubborn edit. Argue with it — it argues back with measurements.
FORGE scopes whole products from any brief — or picks up one part and iterates with you, change by change. Before anything commits, it speculates about the physics: will this flow, will that wall hold, do these parts still fit — run through real solvers, not vibes. When your edit is a mistake, it pushes back with numbers.
HYLOS
From ὕλη — Greek for matter. The world every part lives in.
HYLOS is the persistent semantic-spatial representation of your product — every part, feature, mate, clearance, and constraint, with the reason it exists and the evidence behind it. FORGE doesn't remember your product. It lives inside it. Session after session, nothing is forgotten and nothing rots.
SENTINEL
Nothing commits on the agent's word.
SENTINEL runs a bench of industry-grade solvers — fit, clearance, kinematics, process limits — the same class of machinery aerospace parts are proven on. FORGE invokes them mid-reasoning like a compiler, and every change is measured against HYLOS and refused if it doesn't hold. Touch one feature and SENTINEL re-verifies everything downstream, automatically.
ANVIL
Where geometry gets real.
ANVIL drives an industrial OCCT B-Rep kernel — the same class of machinery aerospace and automotive parts are engineered on. When the kernel refuses a construction, ANVIL re-expresses the design and retries until the geometry is real — then remembers what failed, forever.
Every layer is ours — the agent, the world, the verifier, the kernel. No host CAD, no rented API, no human safety net pretending to be automation. That's why Impulse can do the engineering instead of suggesting it.
How you work
Brief it like an engineer
Intent, photos, sketches, datasheets, STEP files, constraints. The agent reads it all, scopes the whole product, and lays out a plan you approve before it builds.
It builds — and proves it
Real parametric parts on the OCCT kernel, part by part, with rationale you can read. Every claim is measured by SENTINEL before it commits. No silent failures, no fake geometry.
Iterate as long as it takes
Question the design, change your mind, push it further — edits propagate and everything affected is re-verified. Export clean STEP whenever you want. Rev 2, rev 12, rev 40.
See it work
Real screen captures from the product. The same loop you watched above — scope, plan, build, verify, iterate — running on real products, turn after turn, with HYLOS and SENTINEL doing their jobs under every frame.
Describe it, or show it
Drop in anything — a photo, a sketch, a PDF datasheet, a STEP file, a screenshot, even a napkin drawing. Impulse reads it all, figures out the parts the product actually needs, lays out a plan, and drafts the whole thing — the way a real product engineer scopes a build before touching CAD.
It thinks in geometry
HYLOS — the world model — holds every part, feature, mate, and constraint of the product, and the agent reasons over it out loud: fits, clearances, trade-offs, intent. Every move comes with rationale you can read and steer, not a black box that spits out a shape and hopes.
Real parts. Total control.
These aren't frozen meshes. They're real parametric parts in a live canvas. Tell it to hollow a bowl, move a mount, or thicken a wall and it reshapes the actual geometry in place — and SENTINEL re-verifies everything your change touches before it commits.
Yours to take anywhere
Impulse speaks the formats the manufacturing world runs on. Export a real STEP file and keep going in SolidWorks, Onshape, or Fusion — or send it straight to your printer or shop. No lock-in, no dead ends.
Not just parts
Anyone can hand you a single bracket. Impulse composes complete products — it works out every piece the product needs and sizes each one to fit the others: the mechanism, the mounts, the electronics bay, and the way it all goes together.
The request
A smart automatic dog feeder — holds about 3 days of kibble, dispenses a set portion on a schedule, runs on an ESP32.
What it composed
A part is a shape. A product is dozens of parts that have to agree with each other — sizes, clearances, mounting, assembly order. Impulse holds the whole thing at once, so what comes out actually goes together.
No compromises
⌁ Real-time progress
Every agent step is visible — plan, activity, measurement, commit. You watch the work happen; nothing lands as a surprise.
⇄ Your formats, your tools
STEP in, STEP out. Start from your existing parts and finish in SolidWorks, Onshape, or Fusion — or go straight to your printer or shop. No lock-in.
▧ Nothing to install
Browser-native. The kernel, the model, and the verification run server-side — a session is one link, shareable with your whole team.
▣ Your IP stays yours
Private projects, full export at any time, and a record of every decision and measurement — the audit trail your design reviews always wanted.
Who it's for
Go from idea to a complete product.
Describe what you're building and iterate on the whole thing — every part sized to fit the others, the assembly held together as you change your mind.
Start building →Gears, mechanisms, mounts, and enclosures that fit.
Meshing gear trains, linkages, and moving assemblies — built around your boards, motors, and actuators, with standoffs on your holes and cutouts on your ports.
Design the system →The boring 80%, done with receipts.
Jigs, fixtures, brackets, rev N+1 — an agent that documents every decision, measures what it built, and hands back clean STEP. STEP in, STEP out.
Offload the grind →Whole product lines, client-ready.
Spin up variants, explore directions alongside the agent, and export real CAD your clients' engineers can pick up and run with — no lock-in.
Explore directions →Pricing
Credits power agentic engineering — planning, building, editing, and verifying real geometry. Spend them on the best model for the job, from fast drafts to deep reasoning.
Builder
$39
per month
Pro
$199
per month
Studio
$999
per month
Impulse for teams that build serious systems
Large assemblies, your component catalog as a design space, proposals with every assumption stated, private deployment. For automation builders, integrators, and engineering organizations.
We're onboarding in waves — early seats get the agent first.
Seats from $39/mo · engineering & hardware teams first