01 / Agency
Who is actually in control?
Initiation, choice, delegation, and human participation.
Buildcraft is a Human-AI Systems Design company. We design products and workflows where people and intelligent systems work together — defining what AI controls, what humans control, and how the two interact.
Research. Define. Design. Build.
LEEO
Brand strategy, product design, and design system for an insurtech platform. From zero to investor-ready.
WriteWise
Design system and product UX that simplified complex workflows into clearer, shippable screens.
SlateRoom
Audience decision system for talent-led video shows. Model calibration, brand, and evidence-led report design.
Project 28
A survivors and tower-defense mobile game. Game design, art direction, and solo engineering in Godot.
Drummer-1
A VST3/AU drum machine plugin. Brand, interface, and end-to-end engineering for musical pattern generation.
"Buildcraft was a true partner. They listened to our needs, took an early direction, and turned it into a complete brand foundation we could build on."
Jeff Chen
CEO, LEEO
Human-AI Systems Design
We design the relationship between human judgment and machine intelligence.
Buildcraft works with leaders building AI into products, decisions, and operations. We define roles, decision rights, interfaces, safeguards, and feedback loops — then help ship the system, not just the strategy deck.
Founder
Founded by a designer-engineer who has spent two decades where models and people meet.
Carl Brunson has led product, brand, and systems work for startups and large organizations, including design leadership through Verikai’s approximately $120M acquisition. His background spans computer science, mathematics, interactive design, business, and hands-on product building.
Previously: Verikai (acquired for ~$120M), Netspend, Pearson, CEB (acquired for $2.6B by Gartner).
“The goal isn't maximum automation. It's the right relationship between human and machine.”
The new design problem
Software is becoming an actor, not just a tool.
For decades, people operated software. Now software can interpret, recommend, generate, decide, and act. Most organizations are adding AI to existing products and workflows without redesigning the human role around it.
The result is powerful technology paired with unclear authority, fragile trust, awkward handoffs, and human workarounds. Buildcraft designs the missing relationship between the person and the system.
- What should the AI actually do?
- What should the human still control?
- When should AI recommend, request approval, or act?
- How should people understand confidence, uncertainty, and consequence?
- How does a person correct, override, or recover from a bad result?
- Who owns the outcome when something goes wrong?
The Buildcraft Model
Six questions every Human-AI system must answer.
The Buildcraft Model evaluates the relationship across Agency, Authority, Legibility, Trust, Correction, and Accountability. Together, these dimensions reveal where a system is useful, confusing, unsafe, or incomplete.
02 / Authority
What may AI decide independently?
Permissions, approvals, decision rights, and consequence.
03 / Legibility
Does the person understand what the system is doing?
Intent, evidence, state, uncertainty, and expected next action.
04 / Trust
When should AI be believed or questioned?
Confidence, calibration, provenance, verification, and appropriate reliance.
05 / Correction
Can the human redirect or override it?
Editability, undo, escalation, recovery, and learning from feedback.
06 / Accountability
Who owns the outcome when something goes wrong?
Responsibility, auditability, governance, and recourse.
Services
From one critical workflow to the system your organization depends on.
01 / Two weeks
Human-AI Audit
A focused two-week engagement to map one important system, locate broken decision points, and define what the human and machine should each do.
02 / Six to ten weeks
Human-AI System Design
A six-to-ten-week engagement to redesign the workflow, behavior, interface, rules, and failure paths — then prototype or implement the new system.
03 / Ongoing
Human-AI Design Partner
Ongoing senior design leadership for teams building AI products or redesigning work around intelligent systems.
Buildcraft Research
Evidence for designing better relationships with intelligent systems.
We study how AI products distribute agency, authority, understanding, and responsibility. Buildcraft Research turns recurring patterns from products and practice into methods, benchmarks, and the Human-AI Index.
