Have an agent draft an electronics design from a short brief, and leave ordering and power-on to you

The scene

You want a small electronic device with a clear job — a speaker, a voice accessory, or a handheld gadget — and you want an agent to draft the spec, parts list, circuit, and enclosure for you and a qualified person to review, without placing orders or powering anything up.

Tools involved

What they did

1. In one paragraph, say what the device must do, what it must not do, how it is powered, any size limits, and that parts must be available from a supplier you can actually buy from.
2. Ask the agent for a design packet: a spec, schematic notes, board-layer notes, a buyable parts list, an enclosure model, and draft firmware, each with its basis. Do not let it place an order or send files to a fabricator.
3. You or a qualified person should check electrical safety, power or batteries, heat, regulations, and whether the listed parts are still for sale. If a voltage, current, or cost is not in a source you provided, do not let the agent invent it.
4. Only after that review do you decide whether to send the board out for fabrication. A person must assemble, power on, and test the device. The agent may help debug only from measurements you give it.
5. Do not use it to design mains-voltage, high-power battery, or otherwise hazardous devices unless a qualified person is responsible throughout.

Copyable prompt

Draft a design packet for this device: [one-paragraph brief]. Include a spec, schematic notes, board-layer notes, a parts list using parts I can buy from [suppliers I name], enclosure notes, and draft firmware. For every part and electrical rating, say where the figure came from. If you cannot verify a figure, leave it blank. Do not place orders, contact a fabricator, or tell me to power the board on. Stop when the files are ready for a human review of safety, availability, and regulations.

Rewritten here for you to try; not a verbatim excerpt from elsewhere. What it asks：Ask only for design files and a sourced parts list. It must not order anything or suggest powering the board on, and it should leave unverified figures blank for a human safety review.

Things to watch

The official article said the three devices — a home voice-assistant hub, a USB speakerphone, and a handheld virtual pet — worked, that each board was ready for manufacturing in under a day with little human input, and that people still handled assembly and testing. Those are Anthropic’s claims, were not retested here, and do not mean the same paragraph will give you a production-ready product. Hardware involves safety and regulation; do not send model output to a factory or apply power without a review. You need access to Claude Fable 5.2 plus later fabrication and test conditions. Reproducible in China only if that model and the parts are available.

You need access to Claude Fable 5.2. Official API list prices are in the playbook checked on 10 Nov 2026. Board, enclosure, and parts costs are separate; this site does not invent those figures.