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/agent-builder

Builds a new Claude Code agent (subagent) from scratch through a relentless, evidence-based interview that walks the agent's design tree decision-by-decision — entity fit, domain focus and vocabulary, role identity, anti-patterns, description, model tier, tools, and

shell
$ npx -y skills add testdouble/han --skill agent-builder --agent claude-code

How it fires

How this skill gets triggered: by you, by Claude, or both.

  • Fires itselfAuto-invocation. Claude auto-loads it when your prompt matches the work.
  • You can call itInvoke it directly when you want it.
  • Slash command/agent-builder
How auto-invocation works

Context preview

The summary Claude sees to decide when to auto-load this skill.

Builds a new Claude Code agent (subagent) from scratch through a relentless, evidence-based interview that walks the agent's design tree decision-by-decision — entity fit, domain focus and vocabulary, role identity, anti-patterns, description, model tier, tools, and
Ships withhan

Han is a suite of AI skills and agents for solo (or small-team) product engineers.

Get the whole plugin, auto-invoked

Other skills on han.