SkillForge
A skill creator that proves its skills work. Evidence-driven skill creation for Claude Code and Codex: baseline-tested generation, per-skill regression evals, ecosystem doctor, cross-runtime compile, and an opt-in proactive advisor.
SkillForge is an evidence-driven skill creation and maintenance system for Claude Code and Codex that proves skills work before deployment. It routes skill-related requests through a six-phase pipeline that includes baseline testing (red/green gates), automated validation, and per-skill regression evaluations. The tool maintains ecosystem health by detecting trigger collisions, deduplicating skills across runtimes, and optionally mining session history for skill gaps. SkillForge generates skills that ship with their own test suites and can compile to multiple agent runtimes.
Key Features
Use Cases
- 01Creating new agent skills with automated evidence that they solve real problems
- 02Maintaining quality across large skill ecosystems by catching conflicts and redundancy
- 03Running regression tests on existing skills to ensure they continue working after updates
- 04Compiling a single skill definition for deployment across multiple agent platforms
- 05Auditing all installed skills to find trigger word collisions and duplicate functionality
- 06Mining your own agent interaction history to discover missing skills worth building
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SkillForge — FAQ
What is SkillForge?+
SkillForge is a skill creator for Claude Code and Codex that uses an evidence-driven pipeline to generate, test, and maintain agent skills. Unlike traditional skill creators, it requires baseline testing before creation and behavioral validation after to prove skills actually improve agent performance.
How do I install SkillForge in Claude Code?+
Clone the repository to a temporary directory, copy the skillforge folder to ~/.claude/skills/, remove development files, and optionally run the interactive installer for advisor hooks. The optional /skillforge command file can be copied to ~/.claude/commands/ for quick access.
Which AI clients work with SkillForge?+
SkillForge works with Claude Code and Codex CLI. Skills it generates can be compiled for multiple runtimes including Claude Code, Codex, and AgentSkills using the cross-runtime compilation tool.
What are the prerequisites for running SkillForge?+
You need Claude Code or Codex CLI installed and Python 3.8 or later. SkillForge uses only Python standard library; PyYAML is optional and will be used if present for enhanced parsing.
Is SkillForge free to use?+
Yes, SkillForge is open source and released under the MIT license, making it free for both personal and commercial use.
What does the baseline testing (red gate) do?+
The red gate runs a fresh sub-agent on the task without the proposed skill. If the agent succeeds without the skill, SkillForge stops the creation process because no new skill is needed. This ensures only genuinely useful skills are created.
How do I install SkillForge?+
Open the source repository on GitHub and follow its README. SkillForge is a skill — MCP Agents Market links you directly to the official repo.
Is SkillForge free?+
SkillForge is an open-source project hosted on GitHub. Check the repository for its license and any usage requirements.