Is the Compress Prompt skill free?

Yes. The skill itself is free from doodledood/manifest-dev. SkillProof publishes the install command and an independent test verdict at no cost.

What is the Compress Prompt SkillProof Score?

8.4/10 — installs cleanly 4/5, triggers reliably 5/5, output vs. baseline 8/10, docs & honesty 4/5.

How do I install Compress Prompt?

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 Compress Prompt 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.

Compress Prompt

Strips a verbose prompt down to the minimal instruction a model actually needs, with a keep/drop rubric.

by doodledood · doodledood/manifest-dev

Works with setup

Install — copy the command Download source ↗

Test report

Verdict: Works with setup
Score: 8.4/10
Tested: Jul 14, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · f3f31c8

The keep/drop rubric genuinely tightens a bloated prompt (140-token sample cut to ~30 while preserving the one novel constraint) but its required verifier subagent lives outside the skill folder in .claude/agents/, so a plain `cp -r` of the skill directory silently breaks the verification step.

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

Installs cleanly 4/5
Triggers reliably 5/5
Output vs. baseline 8/10
Docs & honesty 4/5

What Compress Prompt does

Compresses a prompt or skill body into a single dense paragraph by applying an explicit keep-vs-drop rubric: keep goals, acceptance criteria and novel constraints, drop process steps and training-redundant boilerplate the model already knows. Triggers when asked to compress, condense, or minimize a prompt, and dispatches a verifier subagent to check goal clarity and constraint preservation before finalizing.

How to install Compress Prompt

git clone https://github.com/doodledood/manifest-dev
cd manifest-dev
mkdir -p ~/.claude/skills
cp -r .claude/skills/compress-prompt ~/.claude/skills/compress-prompt

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger Compress Prompt

/compress-prompt Strips a verbose prompt down to the minimal instruction a model actually needs, with a keep/drop rubric.

It also activates on plain-language prompts like these:

Compress this system prompt so it uses way fewer tokens.
Condense this verbose prompt while keeping the goal intact.
This agent prompt is bloated, can you make it more concise?

Frequently asked questions

Is the Compress Prompt skill free?: Yes. The skill itself is free from doodledood/manifest-dev. SkillProof publishes the install command and an independent test verdict at no cost.
Does Compress Prompt work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 14, 2026. Verdict: Works with setup. The keep/drop rubric genuinely tightens a bloated prompt (140-token sample cut to ~30 while preserving the one novel constraint) but its required verifier subagent lives outside the skill folder in .claude/agents/, so a plain `cp -r` of the skill directory silently breaks the verification step.
What is the Compress Prompt SkillProof Score?: 8.4/10 — installs cleanly 4/5, triggers reliably 5/5, output vs. baseline 8/10, docs & honesty 4/5.
How do I install Compress Prompt?: 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 Compress Prompt 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.