Harness Engineering

Harness engineering turns repeated coding-agent mistakes into durable repository artifacts:

Harness = Instructions + Constraints + Feedback + Memory + Evaluation + Governance

Use this skill when the user asks to:

• make a repository more reliable for GitHub Copilot or other coding agents
• add durable agent instructions, repository rules, or guardrails
• prevent repeated AI coding-agent mistakes
• record known failure paths and the checks that prevent recurrence
• add lightweight drift checks for project rules
• review, refresh, or update an existing agent harness