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AI Agent2025
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Claude Code Harness

Provides a Plan→Work→Review→Release harness for Claude Code agent workflows that enforces spec-driven tasks, TDD-backed implementation, independent review, and packaged evidence for PRs/releases. Exposes plugin/CLI commands and a Go-native guardrail engine to keep agent-driven code delivery reproducible and auditable.

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Introduction

Agent-driven coding often drifts: plans live only in chat, tests become optional, reviews happen too late, and release evidence is rebuilt from memory. That hidden entropy makes agent outputs hard to trust for production work. Claude Code Harness flips the starting point from “ask the agent to code” to “approve a narrow, observable contract” so automation stays verifiable.

What Sets It Apart
  • Spec-first operating loop: Harness generates and treats spec.md and Plans.md as the source of truth, so unknowns remain explicit and the agent cannot silently invent data. This reduces drift and makes acceptance criteria machine-checkable.
  • Enforced implement/review gates: /harness-work runs focused tasks with TDD and verification while /harness-review separates independent review from implementation. That division reduces bias and catches integration issues earlier.
  • Evidence packaging for release: /harness-release and the release preflight collect verifiable artifacts (tests, verification output, changelog boundaries) so PR-ready work can be validated for release readiness without reconstructing state later.
  • Tool & runtime alignment: Designed as a Claude Code plugin path (Claude Code v2.1+), with Go-native guardrails and compatibility paths for Codex/OpenCode, so it integrates into agent-first toolchains rather than replacing them.
Who it's for + Trade-offs

Great fit if you run agent-assisted engineering at scale and need reproducible, auditable delivery—teams using Claude Code who want to enforce TDD, independent review, and clear acceptance gates. It presumes a repository with write access, an established agent runtime (Claude Code v2.1+), and a willingness to move from ad-hoc prompts to an approved plan-and-slice workflow.

Look elsewhere if you need a lightweight prompt helper for ad-hoc exploration (Harness adds process overhead), if you cannot provide repository write access, or if your environment cannot run the required Claude Code plugin paths. The design favors provability and gateability over speed of one-off experimentation.

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Information

  • Websitegithub.com
  • AuthorsChachamaru127
  • Published date2025/12/12

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