tiagovilasboas

Harness Fowler — Development agent for Claude Code

Development community

Harness engineering (Fowler) — agent contract.

How to install Harness Fowler

Installs to ~/.claude/agents/tiagovilasboas-voomp-review-harness-harness-fowler.md

Terminal
mkdir -p ~/.claude/agents && curl -fsSL https://raw.githubusercontent.com/tiagovilasboas/voomp-review-harness/HEAD/agents/HARNESS-FOWLER.md -o ~/.claude/agents/tiagovilasboas-voomp-review-harness-harness-fowler.md

Restart Claude Code, or start a new session, for it to be picked up.

What Harness Fowler does

Harness engineering (Fowler) — agent contract

Apply **in full** when the task touches harness design, skills, agents, RAG/memory contracts, or CI gates around agents.

Source: [Harness engineering for coding agent users](https://martinfowler.com/articles/harness-engineering.html) (Böckeler, 2026).

Vocabulary (mandatory — no synonyms)

Term Meaning
Coding agent Model + harness. Harness = vendor (system prompt, tools, orchestration) + user harness (this

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Full documentation available on GitHub

View Source Repository

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