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Condense — Markdown Density Pass

Strips prose filler from Markdown files while preserving every instruction, rule, table, and command.

Content & WritingBeginner★ 424⑂ 45AI score 8/10Last updated: Sep 23, 2026

What it does

  • Takes a file path or glob of .md files and maximizes information density.
  • Runs a deterministic pre-pass (trailing whitespace, consecutive blank lines) before the LLM rewrite.
  • KEEP list: every instruction, rule, gate, phase, table, code block, path, and the YAML frontmatter stay untouched. CUT list: redundant restatements, motivational framing, filler phrases, duplicate paragraphs.
  • Applies a "delete test" to each sentence: if removing it loses an instruction or decision, keep it.
  • Verifies afterwards: YAML still parses, key terms still grep-able, and reports a | File | Before | After | Reduction | table.

Who it's for

  • Maintainers of agent instruction files (SKILL.md, AGENTS.md, CLAUDE.md).
  • Anyone cutting token cost or context bloat in long prompts and docs.
  • Technical writers whose READMEs have grown wordy enough to hide the rules.

Examples

  1. /condense docs/onboarding.md — turn a rambling onboarding doc into tight step lists.
  2. /condense skills/**/*.md — batch pass over many skill files (10+ files fan out to parallel agents).
  3. Shrink a bloated CLAUDE.md so all rules survive but context usage drops.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/notque/vexjoy-agent/HEAD/skills/code-quality/condense/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the skills/code-quality/condense folder from the GitHub repo notque/vexjoy-agent into my ~/.claude/skills/condense/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/notque/vexjoy-agent.git /tmp/vexjoy-agent && mkdir -p ~/.claude/skills && cp -r /tmp/vexjoy-agent/skills/code-quality/condense ~/.claude/skills/condense

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal.
  2. Clone the repo: git clone https://github.com/notque/vexjoy-agent.git
  3. Create the skills folder: mkdir -p ~/.claude/skills
  4. Copy the skill: cp -r vexjoy-agent/skills/code-quality/condense ~/.claude/skills/condense
  5. Check whether a scripts/ folder came along; if check-whitespace.py is missing, the mechanical pre-pass is skipped and only the LLM pass runs.
  6. Restart Claude Code and run /condense <file-or-glob>.
  7. Files are edited in place, so commit to git or back them up first.
View source on GitHub ↗License: MIT