harnessforge
Generate harness files for AI coding agents
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Programming with Jack Chew

harnessforge - Generate harness files for AI coding agents

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harnessforge is a local, open-source harness generator for AI coding agents. Run uvx harnessforge init to scan a repo and generate the startup files agents read before coding: AGENTS.md, CLAUDE.md, Cursor rules, memory, skills, tools, and validators. Claude Code, Cursor, Codex, Gemini CLI, Aider, and others stay the brain — harnessforge lays down the project context.

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Programming with Jack Chew
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2026 Q1 is the year developers still build the agent harness. 2026 Q3 / 2027 is the year the LLM builds its own harness. Today, every AI coding agent — Claude Code, Cursor, Codex, Gemini CLI, Aider, and others — depends on the same hidden layer: the files that brief the agent before it starts work. AGENTS.md. CLAUDE.md. Cursor rules. SKILLS/. MCP server lists. Memory schemas. Test commands. Validators. “Do not touch this path.” “Require human approval before this.” Different IDE, same boilerplate. Different repo, same boilerplate. Different agent, same boilerplate. That is why I built harnessforge. It is not another coding agent. The coding agent stays the brain. harnessforge scans your repo locally and generates the project context, memory, skills, tools, and validation structure that coding agents read before work begins. The goal is simple: make AI coding agents more consistent across real repos without manually writing the same harness files again and again. Would love feedback from developers using Claude Code, Cursor, Codex, Gemini CLI, Aider, Continue, Windsurf, or other coding agents.