A draughtsman seen from behind, the back of the head showing, completes one detailed drawing at a drafting table, while a row of small robots along a long table extends it into a sequence of further drawings, each robot checking a pinned card of pattern samples and rulers, the whole scene drawn with wide empty margins on every side.

Behind the Craft

We Built Grok Bot. Here Are Our 14 Best Bots | Peng Zheng & Lauren Tan

Peter Yang with Peng Zheng and Lauren Tan · 27 September 2026

Company story · agents · design systems · Agent context files

Takeaway

Two leads at SpaceXAI show how they share work with AI agents: the designer builds the first screen by hand, and the engineer's agent divides projects among other agents.

Summary

Peter Yang, who runs the interview newsletter and podcast Behind the Craft, spoke with the lead designer and lead engineer of Grok Bot, the AI assistant made by SpaceXAI. Peng Zheng, the designer, builds the design system and one finished screen by hand, and his design agent extends that screen to the rest of the flow. Lauren Tan, the engineer, hands large projects to an agent that splits the work among other coding agents.

Key points

Zheng's design agent works directly in Figma. It reads a written file that describes how his design files are set up and the design system's colours, type and spacing.
Zheng describes his own share of the work plainly: "I will do the first 5%."
Tan's lead agent, Matcha, does no work itself. It breaks each project into tasks for other agents, and each of those starts coding agents in the cloud.
The full episode is for paid subscribers, and this account comes from the open show notes. One chapter covers giving agents more work one skill at a time.

Implication

A design team can put its own effort into the design system and one reference screen, and write down the system's rules in a file that an agent reads. This is Zheng's practice on one product, and its wider use is an inference and is not the speakers' claim.

Suggested actions

Product

Give an AI agent one new kind of task at a time, such as testing its own work before merging, and add the next only once it handles that reliably.

Design

Build the design system and one finished screen by hand, and give the agent a file of the system's rules before it extends that screen to the whole flow.

Derived by Working Surface from the article. Source line: How to trust your bots with more work, one skill at a time.

Source issue

28 September 2026: when agents build, people keep the first screen, the review, the files agents read and the whole product.