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Uzys Claude Harness: A Multi-Stack Unified AI Development Harness Framework

Uzys Claude Harness is a deterministic workflow framework designed for Claude Code. It enables a consistent AI-assisted development experience across projects through a 6-stage gated process and 9 tech stack templates.

Claude CodeAI编程助手开发工作流多栈开发确定性框架开发者工具代码规范
Published 2026-04-20 21:18Recent activity 2026-04-20 21:23Estimated read 4 min
Uzys Claude Harness: A Multi-Stack Unified AI Development Harness Framework
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Section 01

Introduction / Main Floor: Uzys Claude Harness: A Multi-Stack Unified AI Development Harness Framework

Uzys Claude Harness is a deterministic workflow framework designed for Claude Code. It enables a consistent AI-assisted development experience across projects through a 6-stage gated process and 9 tech stack templates.

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Section 02

Background: Standardization Needs for AI Programming Assistants

With the popularity of AI programming assistants like Claude Code and GitHub Copilot, developers face a new challenge: how to maintain a consistent AI collaboration experience across different projects and tech stacks?

Each project has its own directory structure, tech stack choices, and coding standards, so AI assistants need to repeatedly adapt to these differences. Worse still, when AI operates freely without constraints, it may introduce code that does not conform to the project style, or even cause security risks.

Uzys Claude Harness (hereinafter referred to as "Harness") is designed to solve these problems. It provides a lightweight yet complete framework to make AI-assisted development predictable, reproducible, and scalable.

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Section 03

Core Design: 6-Stage Gated Workflow

The core of Harness is a deterministic 6-stage workflow, where each stage has clear input/output and acceptance criteria:

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Section 04

1. Spec (Requirements Specification)

Clarify "what to build". Harness provides the North Star decision heuristic (a four-dimensional assessment of trend/role/capability/simplicity) and SPEC templates to help filter scope creep at the early stage of the project.

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Section 05

2. Plan (Technical Planning)

Determine "how to implement". Generate an executable technical plan based on Phase×Milestone dependency graphs and critical path analysis.

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Section 06

3. Build (Code Construction)

Actual coding implementation. During this stage, AI is constrained by hooks such as file protection and security scanning to ensure the code complies with project specifications.

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Section 07

4. Test (Testing & Validation)

Automated test execution. For front-end projects, Harness also integrates UI Visual Review capabilities, using Playwright screenshot comparison to detect visual regressions.

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Section 08

5. Review (Code Review)

Quality control stage. Harness supports integration with the ECC (Everything Claude Code) plugin to provide additional security checks.