Context Mode Output Sandbox
mksglu/context-mode
Routes large command, file, API and browser output through context-mode tools so only the needed result enters the agent's context, instead of dumping it via Bash.
Audit a Claude Code or Codex setup for context-window waste, then fix it and measure the savings.
Install Token Optimizer
$ npx skills add alexgreensh/token-optimizer --skill token-optimizer -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install alexgreensh/token-optimizer token-optimizer --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/alexgreensh/token-optimizer.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/token-optimizer .claude/skills/token-optimizer && rm -rf skills-srcUse ~/.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/
Install the "token-optimizer" agent skill from https://github.com/alexgreensh/token-optimizer/tree/main/skills/token-optimizer into .claude/skills/token-optimizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "token-optimizer", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/alexgreensh/token-optimizer/tree/main/skills/token-optimizerType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add alexgreensh/token-optimizer --skill token-optimizer -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install alexgreensh/token-optimizer token-optimizer --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/alexgreensh/token-optimizer.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/token-optimizer .agents/skills/token-optimizer && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "token-optimizer" agent skill from https://github.com/alexgreensh/token-optimizer/tree/main/skills/token-optimizer into .agents/skills/token-optimizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "token-optimizer", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add alexgreensh/token-optimizer --skill token-optimizer -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install alexgreensh/token-optimizer token-optimizer --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/alexgreensh/token-optimizer.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/token-optimizer .cursor/skills/token-optimizer && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "token-optimizer" agent skill from https://github.com/alexgreensh/token-optimizer/tree/main/skills/token-optimizer into .cursor/skills/token-optimizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "token-optimizer", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/alexgreensh/token-optimizer.git --path skills/token-optimizer--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add alexgreensh/token-optimizer --skill token-optimizer -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install alexgreensh/token-optimizer token-optimizer --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/alexgreensh/token-optimizer.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/token-optimizer .gemini/skills/token-optimizer && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "token-optimizer" agent skill from https://github.com/alexgreensh/token-optimizer/tree/main/skills/token-optimizer into .gemini/skills/token-optimizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "token-optimizer", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install alexgreensh/token-optimizer token-optimizerInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add alexgreensh/token-optimizer --skill token-optimizer -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/alexgreensh/token-optimizer.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/token-optimizer .github/skills/token-optimizer && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "token-optimizer" agent skill from https://github.com/alexgreensh/token-optimizer/tree/main/skills/token-optimizer into .github/skills/token-optimizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "token-optimizer", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add alexgreensh/token-optimizer --skill token-optimizer -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install alexgreensh/token-optimizer token-optimizer --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/alexgreensh/token-optimizer.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/token-optimizer .opencode/skills/token-optimizer && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "token-optimizer" agent skill from https://github.com/alexgreensh/token-optimizer/tree/main/skills/token-optimizer into .opencode/skills/token-optimizer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "token-optimizer", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
token-optimizer- GitHub stars
- 2.5k
- Token cost
- ~3.6k tokens
- SKILL.md length
- 1,468 words
- Files
- 134 (incl. scripts, references, assets)
- Skills in repo
- 6
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Audit a Claude Code or Codex setup for context-window waste, then fix it and measure the savings.
- Works in 8 steps: Resolve measure.py, then gate on runtime… → Initialize (Claude Code) → 5: Keep-Warm Consent (first run only,… → …
- Context feels tight
- SKILL.md covers Step 0: Resolve measure.py,…, Phase 0: Initialize (Claude…, Phase 0.5: Keep-Warm Consent… and Phase 1: Quick Audit (Parallel…, plus 7 more sections
- Calls python3, node and claude
What it does
Token Optimizer is an agent skill from alexgreensh/token-optimizer. Audit a Claude Code or Codex setup for context-window waste, then fix it and measure the savings. Use when context feels tight.
Its SKILL.md is about 3.6k tokens, which your agent loads only when the skill is triggered. The skill folder holds 134 other files, including scripts, reference files and assets.
It sits in Agent Workflows, covering Context engineering. The repository describes itself as: Find the ghost tokens. Fix them. Survive compaction. Avoid context quality decay.
When your agent uses it
- Context feels tight
- Tasks that involve Context engineering
Example prompts
- “/token-optimizer”
Requirements
- Python 3
Workflow steps
8 steps, taken from the step headings in SKILL.md.
- Resolve measure.py, then gate on runtime (run this first)
- Initialize (Claude Code)
- 5: Keep-Warm Consent (first run only, Claude Code)
- Quick Audit (Parallel Agents)
- Analysis
- Present Findings
- Implementation
- Verification
What it can do on your machine
Read from SKILL.md and the folder at commit 7c05b70. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 1 file in scripts/, which the agent can run.
Shell commands in SKILL.md call:
python3nodeclaude
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
Token Optimizer loads about 3.6k tokens when it runs, and up to ~38k if it reads all its reference files. Until then it costs about 36 tokens; SKILL.md has 1,468 words of instructions outside code blocks.
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 passed
The automated check found no risky patterns in SKILL.md.
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); the scripts in this folder are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 1,468 words (~3,579 tokens).
“Audits a Claude Code or Codex setup, identifies context window waste, implements fixes, and measures savings.”
- name
- token-optimizer
- effort
- high
Files
SKILL.md and 133 other files (scripts, references, assets) in skills/token-optimizer of alexgreensh/token-optimizer.
- SKILL.md
- assets/active-compression-hero.svg
- assets/automated-flow.svg
- assets/bash-compression.svg
- assets/before-after.svg
- assets/dashboard-demo.gif
- assets/dashboard-demo.mp4
- assets/dashboard-overview.png
- assets/dashboard.html
- assets/delta-mode.svg
- assets/fleet-demo.html
- assets/hero-terminal.svg
- assets/how-it-works.svg
- assets/logo.svg
- assets/logo.txt
- assets/quality-example.svg
- assets/quality-nudges-loops.svg
- assets/real-savings.svg
- assets/session-database-flow.svg
- assets/status-bar.svg
- … and 114 more
Open the folder on GitHubat commit 7c05b70
Compare with similar skills
Token Optimizer 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Token Optimizer this skillalexgreensh/token-optimizer | 2.5k | — | ~3.6k | Automated safety check: Pass | Custom licence | |
| Context Mode Output Sandboxmksglu/context-mode | 26k | — | ~4.1k | Automated safety check: Pass | Custom licence | |
| Memori Long-Term MemoryMemoriLabs/Memori | 17k | — | ~2k | Automated safety check: Notes | Custom licence | |
| Picoclaw Skill Creatorsipeed/picoclaw | 30k | — | ~4.4k | Automated safety check: Pass | MIT | |
| ccc Semantic Code Searchcocoindex-io/cocoindex-code | 2.8k | — | ~938 | Automated safety check: Pass | Apache-2.0 | |
| Context Mode for Antigravity CLImksglu/context-mode | 26k | — | ~850 | Automated safety check: Pass | Custom licence |
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Routing rules for using context-mode MCP tools in Antigravity CLI: sandboxed code runs, file analysis, indexed search and web fetches that keep large output out of the conversation.
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More from alexgreensh/token-optimizer
Resume Checkpoint
alexgreensh/token-optimizer
Pull a prior session's checkpoint on demand when the user is continuing prior work.
Token Coach
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Plan a token-efficient Claude Code or Codex setup, or get a quick health check.
Fleet Auditor
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Cross-system agent token/cost audit (Claude Code, Codex, OpenClaw, Hermes, OpenCode): idle burns, model misrouting, config bloat, with dollar savings.
Token Dashboard
alexgreensh/token-optimizer
Open the Token Optimizer dashboard in your browser (context usage, quality, savings).
Token Optimizer
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Audit your OpenClaw setup for token waste, context bloat, and cost optimization opportunities
Related
Categories
Questions about Token Optimizer
What does Token Optimizer do?
Audit a Claude Code or Codex setup for context-window waste, then fix it and measure the savings. Token Optimizer is an agent skill from alexgreensh/token-optimizer. Audit a Claude Code or Codex setup for context-window waste, then fix it and measure the savings.
When should I use Token Optimizer?
Token Optimizer fits situations like: context feels tight; tasks that involve Context engineering.
How do I install Token Optimizer in Claude Code?
Run `npx skills add alexgreensh/token-optimizer --skill token-optimizer -a claude-code`. Or copy the skill folder (skills/token-optimizer in alexgreensh/token-optimizer) into .claude/skills/token-optimizer in your project. Claude Code loads it when a task matches its description.
How do I install Token Optimizer in Codex?
Run `npx skills add alexgreensh/token-optimizer --skill token-optimizer -a codex`. Or copy the skill folder (skills/token-optimizer in alexgreensh/token-optimizer) into .agents/skills/token-optimizer in your project. Codex loads it when a task matches its description.
Can I use Token Optimizer 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 alexgreensh/token-optimizer --skill token-optimizer -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/token-optimizer, .gemini/skills/token-optimizer, .github/skills/token-optimizer and .opencode/skills/token-optimizer in your project.
What does Token Optimizer need to run?
Going by SKILL.md and its folder, Token Optimizer needs the command-line tools its instructions call (python3, node and claude). Our summary lists: Python 3.
Does Token Optimizer 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 Token Optimizer safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Token Optimizer use?
Token Optimizer has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Token Optimizer use?
About 3.6k tokens (SKILL.md is roughly 14k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 35k tokens, read only when the agent opens those files.
What are the alternatives to Token Optimizer?
Skills that share tags, products or a category with Token Optimizer: Context Mode Output Sandbox (mksglu/context-mode, 26k stars), Memori Long-Term Memory (MemoriLabs/Memori, 17k stars), Picoclaw Skill Creator (sipeed/picoclaw, 30k stars) and ccc Semantic Code Search (cocoindex-io/cocoindex-code, 2.8k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Token Optimizer?
alexgreensh (a GitHub user) maintains it in alexgreensh/token-optimizer, which has 2,527 GitHub stars. The repository holds 6 skills in this directory. The repository was last updated on October 8, 2026.
Source: alexgreensh/token-optimizer on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.