Agent skill

Condense

by notque in notque/vexjoy-agent

Maximize information density: preserve all instructions, remove prose filler.

MITAuto-check: notesDevelopment

Install Condense

skills CLI
$ npx skills add notque/vexjoy-agent --skill condense -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install notque/vexjoy-agent condense --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/notque/vexjoy-agent.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/code-quality/condense .claude/skills/condense && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
condense
GitHub stars
435
Token cost
~929 tokens
SKILL.md length
401 words
Files
1
Skills in repo
61
Repo updated
First seen
Licence
MIT

At a glance

Maximize information density: preserve all instructions, remove prose filler.

  • Works in 3 steps: SCOPE → CONDENSE → VERIFY
  • Development work in your project
  • SKILL.md covers Phase 1: SCOPE, Phase 2: CONDENSE, Phase 3: VERIFY and Error Handling
  • Calls python3

What it does

Condense is an agent skill from notque/vexjoy-agent. Maximize information density: preserve all instructions, remove prose filler.

Its SKILL.md is about 930 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development. The repository describes itself as: VexJoy AI Agent with Jev Intelligent Routing - /do routes plain-English requests to the right specialist agent and gates the work with reviews, tests, and a learning loop. The licence is MIT.

When your agent uses it

  • Development work in your project

Example prompts

  • “/condense”

Requirements

  • Python 3
  • Pre-approved tools (allowed-tools): Read, Edit, Write, Bash, Grep, Glob

Workflow steps

3 steps, taken from the step headings in SKILL.md.

  1. SCOPE
  2. CONDENSE
  3. VERIFY

What it can do on your machine

Read from SKILL.md and the folder at commit 5218674. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Edit
    • Write
    • Bash
    • Grep
    • Glob

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • python3

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Condense loads about 929 tokens when it runs. Until then it costs about 22 tokens; SKILL.md has 401 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~22
When it runs · the whole SKILL.md, loaded when a task matches
~929

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

  • NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
    allowed-tools: Read, Edit, Write, Bash, Grep, Glob

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from notque/vexjoy-agent at commit 5218674, republished under its MIT licence (© notque). 401 words, ~929 tokens.

Download SKILL.mdSave it as .claude/skills/condense/SKILL.md (or your agent's skills folder).
name
condense
description
Maximize information density: preserve all instructions, remove prose filler.
allowed-tools
Read, Edit, Write, Bash, Grep, Glob
user-invocable
true
argument-hint
<file-or-glob>
routing.triggers
condense, reduce words, clarity pass, information density, remove prose, tighten, fewer words
routing.pairs_with
toolkit
routing.complexity
Simple
routing.category
code-quality

Condense

Strip prose filler from .md files. Preserve every instruction. This skill practices what it preaches.

Phase 1: SCOPE

Identify targets.

  1. Single file: User names a path. Read it.
  2. Glob: User gives a pattern (agents/*.md). Expand, list matches, confirm with user.
  3. Batch (10+ files): Dispatch parallel agents, one per file.

Mechanical pre-pass (deterministic, run before LLM condensing): strip trailing whitespace and consecutive blank lines that inflate Opus token counts. The script handles the mechanical reduction so the LLM phase focuses on prose density.

bash
python3 scripts/check-whitespace.py --fix <target-file-or-dir>   # 0=clean, 1=violations fixed

Run on the scoped targets (defaults to agents/**/*.md and skills/**/*.md when no path given). Then proceed to the LLM pass on the same files.

Gate: At least one target file identified and readable; mechanical pre-pass run.


Phase 2: CONDENSE

For each file:

  1. Read the full file. Record word count.
  2. Rewrite in place applying the rules below.
  3. Record new word count.
Rules

KEEP (never cut):

  • Every instruction, rule, gate, phase, step
  • Tables, code blocks, commands, paths
  • YAML frontmatter (do not alter)
  • Structure: headers, numbered lists, phase ordering
  • Technical terms naming specific things
  • Reference loading tables
  • Error handling sections
  • Non-obvious "because X" reasoning

CUT:

  • Redundant restatements of the same rule
  • "Because X" on obvious rules
  • Motivational framing ("this will help you", "it is important to note")
  • Filler phrases: "in order to", "it should be noted that", "it is worth mentioning"
  • Examples that repeat what the phase already says
  • Paragraphs saying the same thing from different angles -- merge to one

STYLE: Short sentences. Active voice. Concrete words. If you can cut a word without losing an instruction, cut it.

Show full SKILL.md (142 more words)Show less
DELETE TEST

Before cutting any sentence: "If I remove this, does the reader lose an instruction, rule, or decision?" No = cut. Yes = keep.

Boundaries

Do not reorganize sections, change meaning, add ideas, alter paths/commands, drop tables or code blocks, or modify YAML frontmatter values.


Phase 3: VERIFY

For each condensed file:

  1. YAML check: Confirm frontmatter parses.
    bash
    python3 -c "import yaml; yaml.safe_load(open('<file>').read().split('---')[1])"
  2. Report: Show | File | Before | After | Reduction | table with word counts.
  3. Instruction check: Grep original for key terms (phase names, gate names, commands). Confirm each appears in condensed version. If any missing, restore from original.

Gate: YAML parses. No instructions lost. Reduction reported.


Error Handling

No prose to cut: Report 0% reduction, move to next file.

Instruction removed: Re-read original, restore missing instruction, re-verify.

YAML broken: Restore original frontmatter verbatim, re-condense body only.

Non-.md file: Skip with warning.

© notque, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/code-quality/condense of notque/vexjoy-agent.

Open the folder on GitHubat commit 5218674

Compare with similar skills

Condense next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Condense compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Condense this skillnotque/vexjoy-agent435—~929Automated safety check: NotesMIT
Finishing a Development Branchobra/superpowers296k5 repos~1.9kAutomated safety check: PassMIT
Typescript Advanced Typesrolling-scopes/rsschool-app10k24 repos~4.2kAutomated safety check: PassMPL-2.0
PR Babysitteropeninterpreter/openinterpreter69k3 repos~4.2kAutomated safety check: PassApache-2.0
Code Review ChecklistshareAI-lab/learn-claude-code78k5 repos~1.1kAutomated safety check: PassMIT
Greplooponyx-dot-app/onyx32k4 repos~3.3kAutomated safety check: PassMIT

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Categories

Questions about Condense

What does Condense do?

Maximize information density: preserve all instructions, remove prose filler. Condense is an agent skill from notque/vexjoy-agent. Maximize information density: preserve all instructions, remove prose filler.

When should I use Condense?

Condense fits situations like: development work in your project.

How do I install Condense in Claude Code?

Run `npx skills add notque/vexjoy-agent --skill condense -a claude-code`. Or copy the skill folder (skills/code-quality/condense in notque/vexjoy-agent) into .claude/skills/condense in your project. Claude Code loads it when a task matches its description.

How do I install Condense in Codex?

Run `npx skills add notque/vexjoy-agent --skill condense -a codex`. Or copy the skill folder (skills/code-quality/condense in notque/vexjoy-agent) into .agents/skills/condense in your project. Codex loads it when a task matches its description.

Can I use Condense in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add notque/vexjoy-agent --skill condense -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/condense, .gemini/skills/condense, .github/skills/condense and .opencode/skills/condense in your project.

What does Condense need to run?

Going by SKILL.md and its folder, Condense needs the command-line tools its instructions call (python3). Our summary lists: Python 3. Its frontmatter pre-approves these tools: Read, Edit, Write, Bash, Grep, Glob.

Does Condense access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Condense safe to install?

Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.

What licence does Condense use?

Condense is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Condense use?

About 929 tokens (SKILL.md is roughly 3.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Condense?

Skills that share tags, products or a category with Condense: Finishing a Development Branch (obra/superpowers, 296k stars), Typescript Advanced Types (rolling-scopes/rsschool-app, 10k stars), PR Babysitter (openinterpreter/openinterpreter, 69k stars) and Code Review Checklist (shareAI-lab/learn-claude-code, 78k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Condense?

notque (a GitHub user) maintains it in notque/vexjoy-agent, which has 435 GitHub stars. The repository holds 61 skills in this directory. The repository was last updated on October 3, 2026.

Source: notque/vexjoy-agent on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.