Claude with Rainbrand for Extropic | Rainbrand

Step 0: Start with one prompt

Claude chose what to make and wrote this prompt, with the Rainbrand MCP connected.

Use Rainbrand and Extropic’s brand to explain its thermodynamic computing hardware to developers and researchers, using only facts from extropic.ai. Make an interactive page where readers tune and sample the four probabilistic circuits on its X0 chip, a 20-second film that climbs from one pbit to the billion-pbit cluster Extropic plans for 2027, and a two-page Z1 datasheet. Don’t extend Extropic’s efficiency claims, and label the pieces as concepts.

Step 1: Add a brand

Added to Rainbrand from extropic.ai (opens in a new tab). It listed Times New Roman for headings, which the site never loads, so Claude corrected that with a Brand Edit. A sample of what Claude could use:

View the full brand

Logo

The standalone stippled mark, the default logo

Colours

Typefaces

Aa Bb 123

Kessler

Aa Bb 123

Suisse

Aa Bb 123

Suisse Mono

Step 2: Ask for Briefs

Claude asked for 2 Briefs first: one for the sampler, one for the film and datasheet.

For the circuit sampler

See the full Brief

Claude asked for

rainbrand · create_brief

task: “Design an interactive web page that explains the four probabilistic circuits Extropic demonstrated on its X0 chip, for developers and researchers who are new to thermodynamic computing. Readers tune each circuit and watch it sample: a pbit (0 or 1 with a set probability, like a weighted coin), a pdit (one of k outcomes with configurable probabilities, like a weighted die), a pmode (a programmable Gaussian with a set mean and variance) and a pmog (a mixture of Gaussians, using a pdit to select between pmodes). Each circuit shows a live trace of its output over time and a histogram that fills in against the target distribution, with short plain-language captions on what it does and where it fits: X0 proved these circuits in silicon, and the Z1 chip carries 269,568 pbits. The page runs as a simulation in the browser and must say so. It should look like Extropic's own technical figures and pages, work on desktop and phone, and make no performance claims beyond what Extropic states.”

Rainbrand sent backin 37 s

Guidance

Extropic brand context for the probabilistic-circuits explainer

Figures“dark plotting fields, fine white axes and labels, and warm yellow/gold traces and curves”

Simulation“state clearly that samples are generated by an in-browser simulation, not a live X0/Z1 device”

Facts“The supplied Brand materials do not verify that X0 demonstrated these four circuits in silicon”so Claude checked them on Extropic’s hardware page.

AlsoPalette, buttons, logo, typography

For the film and the datasheet

See the full Brief

Claude asked for

rainbrand · create_brief

task: “Make two pieces about Extropic's Z1 chip and the systems built on it, for engineers and technical buyers following the hardware, using only the figures in Extropic's Summer 2026 update. (1) A 20-second 16:9 film that climbs the systems hierarchy: one pbit, a pbit connected to sixteen neighbours, the Z1 chip (eight cores, 269,568 pbits, over 50 MHz sampling, under 1 W), the Z1 thermo compute stick (two chips, over 500,000 pbits, M.2), the Z1 accelerator card (16 chips, over 4,000,000 pbits, PCIe) and the billion-pbit cluster Extropic plans to build in 2027, ending on the logo and early access in 2027. (2) A two-page US Letter datasheet: page one covers the Z1 chip's specifications (also 215,904 coupling parameters, a sparse graph where each pbit connects to 16 neighbours, chromatic Gibbs sampling of an Ising model, under 12 mm per side) and how it works; page two covers the stick, card and cluster, the software stack (THRML, Torx, Thermalizers and an early-access GPU simulator API) and early access. Use Extropic's real product photography where it shows these products. Both are unofficial concepts and must not invent specifications, benchmarks or efficiency comparisons.”

Rainbrand sent backin 55 s

Guidance

Extropic brand context — pinned version de011d7a-258d-5212-8957-f62bb7681393

Imagery“Use the supplied product and technical visuals rather than generic computing imagery”

Products“use it as a form-factor/product view, not as evidence for the task’s two-chip count”said of the Z1 stick photo.

Claims“Do not introduce efficiency comparisons or benchmarks”

Step 3: Make the pieces

Extropic builds chips that compute with randomness. Concepts by Claude; every figure comes from extropic.ai (opens in a new tab).

Circuit sampler

An interactive page: set the odds of Extropic’s four random circuits and watch them sample.

What it used from the Brief

Logo

TypeKesslerSuisseSuisse Mono

Colours#1C0101#FFFFFF#F5D54C#374151

Styled after

VoicePlain definitions, no performance claims

One pbit to one billion

A 20-second film, from one circuit to the cluster Extropic plans for 2027.

Music added after Review: “Half Mystery” by Kevin MacLeod, from incompetech.com (opens in a new tab) under CC BY 4.0 (opens in a new tab)

What it used from the Brief

Logo

TypeKesslerSuisseSuisse Mono

Images

VoiceLabels and figures, no comparisons

Z1 datasheet

A two-page spec sheet for engineers: the Z1 chip, then the stick, card and cluster.

What it used from the Brief

TypeKesslerSuisseSuisse Mono

Colours#1C0101#FFFFFF#F5D54C#374151

Images

VoiceSpecifications as published.