Bloom is now Rainbrand

Claude withRainbrand forExtropic (opens in a new tab).

Extropic’s homepage, extropic.ai: the glowing orange word Thermodynamic above Computing in white serif capitals, over a dark close-up of gold hardware. (opens in a new tab)
Extropic todayextropic.ai (opens in a new tab)

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:

Logo

Extropic’s mark: a solid diamond with four stippled wings

The standalone stippled mark, the default logo

Colours

  • Accent#F5D54C
  • Background#1C0101
  • Text#FFFFFF
  • Card border#374151

Typefaces

Aa Bb 123

Kessler

Aa Bb 123

Suisse

Aa Bb 123

Suisse Mono

Files 65

Extropic brand image: The Z1 thermo compute stickExtropic brand image: The XTR-0 platformExtropic brand image: A gold state trace with its probability densityExtropic brand image: The Extropic wordmark over amber light

Guidance 7

“Favor precise, explanatory language over unsupported hype.”

Voice, colour, type, logo, product and editorial imagery

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

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.
Also
Palette, buttons, logo, typography

Files

10
Extropic’s stippled mark

Kessler

Suisse

Suisse Mono

Font files, each with a specimen

  • Brief image: A gold state trace with its probability density
  • Brief image: Binary switching data on a sigmoid curve
  • Brief image: Two-mode distributions in gold and orange

For the film and the datasheet

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”
Also
Voice, palette, typography, logo, schematics for the cluster

Files

10
Extropic’s stippled mark

Kessler

Suisse

Suisse Mono

Font files, each with a specimen

  • Brief image: The Z1 chip
  • Brief image: The Z1 thermo compute stick
  • Brief image: The Z1 accelerator card

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).

The circuit sampler: the heading Programmable randomness above a note that the samples are simulated, then four panels, each with controls, a gold trace of recent outputs and a histogram against the set distribution, and a closing row from one circuit to the Z1 chip. (opens in a new tab)

Circuit sampler

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

Open page (opens in a new tab)
What it used from the Brief
Logo
Extropic’s stippled mark
Type
KesslerSuisseSuisse Mono
Colours
#1C0101#FFFFFF#F5D54C#374151
Styled after
A gold state trace with its probability densityBinary switching data on a sigmoid curveTwo-mode distributions in gold and orange
Voice
Plain 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)

Open video (opens in a new tab)
What it used from the Brief
Logo
Extropic’s stippled mark
Type
KesslerSuisseSuisse Mono
Colours
#1C0101#FFFFFF#F5D54C#374151
Images
The Z1 chipThe Z1 thermo compute stickThe Z1 accelerator card
Voice
Labels and figures, no comparisons
Datasheet page 1: Z1 in large type beside a photo of the chip, four headline figures (269,568 pbits, 8 cores, over 50 MHz, under 1 W), a specification table and an explanation of how it works. (opens full size in a new tab)Datasheet page 2: Z1 systems, with cards for the compute stick, the accelerator card and the planned billion-pbit cluster, a table of the software stack and an early access 2027 note. (opens full size in a new tab)

Z1 datasheet

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

Open PDF (opens in a new tab)
What it used from the Brief
Type
KesslerSuisseSuisse Mono
Colours
#1C0101#FFFFFF#F5D54C#374151
Images
The Z1 chipThe Z1 thermo compute stickThe Z1 accelerator card
Voice
Specifications as published

Step 4: Get it Reviewed

Every asset was Reviewed. Review caught some problems, and Claude fixed them.

How Review works (opens in a new tab)

Circuit sampler footer, logo check

The footer mark was too small. Drawn at full size, it passed.

The footer mark in round 1: a small white X whose stipple has blurred into soft beams.
before: 54 px wide, the dots blur togetherFail
Review comment
“The footer emblem alters Extropic’s stippled diamond mark, using straight beam wings rather than the official flared stipple geometry.”
Claude drew the mark at the supplied file’s native 256 pixels, after a first enlargement still failed, and asked for another Review.
The footer mark in the final round: the white stippled diamond and its four dotted wings.
after: 256 px, the file’s own sizePass
Review comment
“Extropic's standalone stippled mark is clearly displayed in the footer in white against the dark ground, unaltered and legible.”

Final Reviews: circuit sampler, film frame, Z1 datasheet

All three passed all 4 checks.

Circuit sampler PassThe top half of the page on a desktop.
What Review sawOpen full size (opens in a new tab)
LogoPass
Brand logo (opens in a new tab)
Extropic’s wordmark, from the brand.
Observed (opens in a new tab)
The white wordmark at the sampler’s top left.

Remove the backgrounds and colour

The brand logo reduced to its black shape.The mark extracted from the artwork, reduced to its black shape and lined up with the brand logo.

Line up and overlap

The aligned logos overlaid: matching parts are black, brand-only parts are blue, and artwork-only parts are pink.Open the overlap image in a new tab.
  • Matching parts
  • Brand only
  • Observed only
Review comment
“The official Extropic wordmark appears at the top left in clean white, unaltered and clearly legible against the dark background.”
CopyPass
  • Programmable randomness, the sampler’s heading.
  • The note that the samples come from a simulation in the browser, not an Extropic chip.
  • WordingAs requestedMatches
  • VoicePrecise, explanatoryMatches
Review comment
“The text includes all requested sections with correct spelling. The explanatory, precise technical tone fits Extropic’s guidance to pair big-picture goals with concrete explanations.”
TypographyPass
  • A weighted coin, a panel heading.
    FontKesslerMatches
  • The sampler’s opening paragraph.
    FontSuisseMatches
  • The four jump buttons: 01 pbit, 02 pdit, 03 pmode, 04 pmog.
    FontSuisse MonoMatches
Review comment
“Display headings are set in Kessler with tight tracking, body copy uses Suisse, and buttons use Suisse Mono, matching the brand font roles.”
ColourPass
  • BackgroundObserved #1B0100Approved #1C0101Matches
  • Gold controlsObserved #F5D54CApproved #F5D54CMatches
Review comment
“The dark background and gold accent fills match the brand palette; thin text strokes and border lines blend into the ground and were not measured.”
Film frame PassThe Z1 chip, 9.2 seconds in.
What Review sawOpen full size (opens in a new tab)
LogoPass
The white wordmark at the frame’s top left.
Review comment
“The Extropic wordmark at the top left is clearly displayed, unaltered, and legible against the dark background.”
CopyPass
  • Over 50 MHz sampling, under 1 W, a gold label.
  • 269,568 pbits on one chip, in eight cores.
  • WordingAs requestedMatches
  • VoicePrecise, explanatoryMatches
Review comment
“Technical specifications and system hierarchy labels match the requested copy accurately and align with Extropic’s precise, explanatory brand voice.”
TypographyPass
  • Z1, the scene’s heading.
    FontKesslerMatches
  • The line under the heading.
    FontSuisseMatches
  • Z1 chip, the current step in the progress row, in gold.
    FontSuisse MonoMatches
Review comment
“The display heading uses Kessler, the body text uses Suisse, and the labels and indicators use Suisse Mono, matching brand typography rules.”
ColourPass
  • BackgroundObserved #1B0100Approved #1C0101Matches
  • Gold progress barObserved #F5D54EApproved #F5D54CMatches
  • White textObserved #FFFFFFApproved #FFFFFFMatches
Review comment
“The dark background, white text, and gold indicator match Extropic’s brand palette. The embedded chip photo colors were not measured.”
Z1 datasheet PassPage 1, the chip.
What Review sawOpen full size (opens in a new tab)
LogoPass
The white wordmark at the datasheet’s top left.
Review comment
“The Extropic wordmark at top left matches brand reference R2, rendered cleanly with strong contrast on dark background.”
CopyPass
  • The datasheet’s opening lines on what Z1 is and what a pbit does.
  • Four figures: 269,568 pbits, 8 cores, over 50 MHz sampling rate, under 1 W.
  • WordingAs requestedMatches
  • VoiceTechnical, explanatoryMatches
Review comment
“Accurately reflects requested text and Extropic's technical, explanatory voice defining pbits and hardware sampling, with correct spelling and grammar.”
TypographyPass
  • What’s on the die, a section heading.
    FontKesslerMatches
  • A paragraph from How it works.
    FontSuisseMatches
  • Thermodynamic sampling unit, a label.
    FontSuisse MonoMatches
Review comment
“Kessler display headings set in capitals, Suisse body copy, and Suisse Mono labels all match Extropic brand typography.”
ColourPass
  • BackgroundObserved #1C0101Approved #1C0101Matches
  • Gold labelsObserved #F5D54CApproved #F5D54CMatches
  • White textObserved #FFFFFFApproved #FFFFFFMatches
  • RulesObserved #374151Approved #374151Matches

Review saw 4 frames of the film; Claude checked playback itself.

Try it yourself.

Add Rainbrand to the agent you already use.

Read the docs

  1. Open the Rainbrand plugin and add it.

    Open Rainbrand plugin (opens in a new tab)

  2. Connect your Rainbrand account when asked. It works in ChatGPT and in Codex.

Rainbrand builds and maintains shared brand context for your agents and products.

Get startedRead the docs