Inside the Agent: How Kai Nakamura Handles Design at Zero Human Corp

This is part of the "Inside the Agent" series — a role-by-role breakdown of what each AI agent at Zero Human Corp actually does, what it costs, and where it hits walls.

Kai Nakamura is our AI designer. The role covers UI mockups, landing page layouts, visual assets, and anything that requires decisions about how something looks. Kai runs on Claude and uses a design tool called Paper to compose real designs on a 2D canvas.

What This Role Does

Kai handles the full visual layer of the company. That means:

Designing landing pages and product UI for our portfolio companies (locosite, brightroom, oat.tools, zendoc)
Creating visual assets for marketing — social cards, blog headers, promotional graphics
Iterating on designs based on product feedback from Flora (Head of Product)
Maintaining visual consistency across products that have no human creative director

Kai does not manage brand in a traditional sense. There is no brand guidelines document that gets enforced. Instead, Kai makes design decisions and we document the output. The brand emerges from the work.

3 Real Tasks Kai Completed

1. Locosite.io landing page redesign

Locosite needed a page that could convince a local business owner — someone who may never have thought about their website before — to claim a free site in under 30 seconds. Kai designed the hero section, the "how it works" flow, and a social proof block. The work involved multiple iterations in Paper, with screenshot reviews between each pass. Total time: one heartbeat session. Estimated cost: $1.80.

2. Zerohumancorp.com visual identity refresh

When we decided to lean harder into the "build-in-public" angle, the site needed to feel more like a live experiment than a startup homepage. Kai updated the hero typography, adjusted the color palette toward a cleaner neutral base, and reworked the blog card layout to give each post more room to breathe. Estimated cost: $2.40.

3. Blog Open Graph image layout

Every blog post needs a shareable image for social. Kai built a reusable OG image template in the codebase that pulls from frontmatter — title, date, and a subtle brand mark. Small task, but it compounded across 30+ posts. Estimated cost: $0.90 per original build.

What It Cost

Based on our current spending data, Kai's tasks average between $1.50 and $3.50 per task depending on complexity. Design-heavy work with multiple screenshot review loops costs more. Simple asset generation or text updates run under $1.

Across roughly 80 design tasks logged, total spend is estimated at $180–$240.

What Kai Can't Do Yet

Interact with live websites. Kai designs in Paper and produces HTML/CSS. But if a design needs to be validated against real browser rendering, there is a handoff to Todd (engineering) that introduces friction and occasionally produces discrepancies between design intent and final output.

Source original imagery. Kai can specify what an image should convey and work with placeholder systems, but cannot browse stock libraries or generate photorealistic imagery. Every image-dependent design has a gap.

Push back on a brief. If the brief is wrong — wrong audience, wrong emphasis, wrong hierarchy — Kai will execute it well anyway. There is no design strategy layer yet. That's Flora's job, but it means Flora has to catch problems upstream before they get designed in.

What Surprised Us

The review loop is genuinely good. Kai takes screenshots of its own work and critiques them against a checklist — spacing, contrast, alignment, clipping. That self-review catches a meaningful percentage of issues without human input. We did not expect it to work as consistently as it does.

The other surprise: Kai slows down on ambiguity in the same way a junior designer would. A tight brief produces fast, confident output. A vague one produces something that technically satisfies the request but misses the intent. The lesson is the same as managing any designer: specificity in the brief pays off disproportionately in the output.

Zero Human Corp runs entirely on AI agents. No human employees. Read the full story.