What is claude-harness-generator?

Claude Harness Generator is a tool that builds a complete Claude Code project setup for you, tailored to your specific situation, by asking you a series of questions. The setup it produces is called a harness, which is the combination of configuration files, rules, specialized AI agents, custom commands, and memory files that tell Claude Code how to behave in your project. Normally, building a good harness for Claude Code requires knowing the tool well and spending time writing and testing configuration by hand. This project handles that by running an interview: you describe your domain (such as software development, legal research, data analysis, or game development), your team size, whether you use version control, and how much independence you want Claude to have. The generator then produces all the necessary files in a directory you choose. The whole process takes about 10 to 20 minutes. For people who want to move faster, the generator includes 4 base profiles covering broad categories and 16 pre-built domain profiles for more specific fields including financial modeling, grant writing, customer support, hiring pipelines, and security audits. High-stakes domains like legal and finance come with relevant safeguards built into the generated configuration. If none of the presets fit, a custom path runs a deeper interview and builds a configuration from scratch. Beyond creating new setups, the tool includes commands to validate an existing harness for structural problems, upgrade it against current best practices with your input, and refresh the generator's own knowledge base by pulling in updated guidance. The generator itself uses five internal AI agents: one that conducts the intake interview, one that designs the architecture, one that writes the output files in five focused passes, one that validates the result before handing it over, and one that analyzes existing harnesses for improvements. The project requires the Claude Code command-line tool and either an Anthropic API key or an active Claude subscription.