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The facts, the numbers, the files.

For anyone writing about 3V3. Everything here is true today and sourced; use any of it without asking. Questions go to the founder directly.

Embargoed material is marked and lifts on Tuesday 11 November 2026, 15:00 UK.

In one paragraph

What 3V3 is.

3V3 is a PCB tool in the browser with a hosted MCP. Ask Claude, Cursor or ChatGPT for a board and watch it place, route and check it in your browser, then export Gerbers for any fab. Free for 14 days, then £15 a month. Run by a small team and its agents, in the UK.

The number

3:52

Median time from one plain prompt to exported Gerbers, over five real agent runs (Claude Code, Opus) on our hosted MCP. Every board passed its design-rule check. The table →

What it got wrong

In a trial run an agent made a coin-cell board 35 × 23 mm instead of the 30 × 20 asked, because the holder alone is 33.5 mm, and said so. On a USB-C power board our status stayed amber for pins left empty on purpose; that one was ours to fix, and is fixed: a pin can now be marked “not connected”.

What it isn't

Not a replacement for an engineer. The agent does the placing and routing; a person checks the board and signs it off before anything is ordered. Any fab, no lock-in; export always works, paid or not.

Press kit

Images and files.

The board, powered

The uncut run

The editor

Fact sheet

The short list.