Is the Claude MD Optimizer skill free?

Yes. The skill itself is free from wrsmith108/claude-md-optimizer. SkillProof publishes the install command and an independent test verdict at no cost.

What is the Claude MD Optimizer SkillProof Score?

9.2/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 8/10, docs & honesty 5/5.

How do I install Claude MD Optimizer?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use Claude MD Optimizer with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

Claude MD Optimizer

Shrinks oversized CLAUDE.md / AGENTS.md / copilot-instructions via progressive disclosure

by wrsmith108 · wrsmith108/claude-md-optimizer

Tested · Works

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 9.2/10
Tested: Jul 20, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Jul 30, 2026 · a76ff95

⚠ This skill is no longer available upstream. Our re-check on Aug 10, 2026 couldn't find it any more (repo unreachable/deleted). The test below is what we measured on Jul 20, 2026 and we're leaving it up as a record — but there is nothing left to install, so we've removed the command.

Ran it against the repo's own 270-line CLAUDE.md fixture: the skill produced a 138-line main file (under its 200 target) plus 171 lines of verbatim .claude/rules sub-docs, and all eight probed detail strings survived, from the compose password to the deploy poll interval to the AWS/SendGrid key placeholders. A no-skill baseline pass hit 66 lines but only by summarizing, silently dropping those same specifics (POSTGRES_PASSWORD, wait-on health URL, AWS_SECRET_ACCESS_KEY, SendGrid key). The skill's zero-information-loss claim is the real, measurable edge, and it ships a genuine eval harness with fixtures and assertions rather than just prose.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 8/10
Docs & honesty 5/5

What Claude MD Optimizer does

Detects and slims down bloated agent instruction files (CLAUDE.md, AGENTS.md, copilot-instructions.md) by extracting reference content verbatim into the format's native sub-doc mechanism and replacing it with a rich inline synopsis plus link. Triggers on requests to optimize/reduce/shrink an over-long agent instructions or context file.

How to install Claude MD Optimizer

Nothing to install: the source repository no longer has this skill. If the author brings it back, our daily re-check will pick it up and the command will reappear here.

Commands — how to trigger Claude MD Optimizer

/claude-md-optimizer Shrinks oversized CLAUDE.md / AGENTS.md / copilot-instructions via progressive disclosure

It also activates on plain-language prompts like these:

Our CLAUDE.md file is way too long, shrink it without losing info
Split this bloated AGENTS.md into a synopsis plus linked sub-docs
Optimize our copilot-instructions.md using progressive disclosure

Frequently asked questions

Is the Claude MD Optimizer skill free?: Yes. The skill itself is free from wrsmith108/claude-md-optimizer. SkillProof publishes the install command and an independent test verdict at no cost.
Does Claude MD Optimizer work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 20, 2026. Verdict: Tested · Works. Ran it against the repo's own 270-line CLAUDE.md fixture: the skill produced a 138-line main file (under its 200 target) plus 171 lines of verbatim .claude/rules sub-docs, and all eight probed detail strings survived, from the compose password to the deploy poll interval to the AWS/SendGrid key placeholders. A no-skill baseline pass hit 66 lines but only by summarizing, silently dropping those same specifics (POSTGRES_PASSWORD, wait-on health URL, AWS_SECRET_ACCESS_KEY, SendGrid key). The skill's zero-information-loss claim is the real, measurable edge, and it ships a genuine eval harness with fixtures and assertions rather than just prose.
What is the Claude MD Optimizer SkillProof Score?: 9.2/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 8/10, docs & honesty 5/5.
How do I install Claude MD Optimizer?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Claude MD Optimizer with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.