Claude Code Agent Development
anthropics/claude-plugins-official
Explains how to write agents for Claude Code plugins: the markdown file with YAML frontmatter, trigger descriptions, model and color settings, and system prompt design.
Coaches a token-efficient Claude Code or Codex setup from the user's own usage data.
Install Token Coach
$ npx skills add alexgreensh/token-optimizer --skill token-coach -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install alexgreensh/token-optimizer token-coach --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-coach .claude/skills/token-coach && 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-coach" agent skill from https://github.com/alexgreensh/token-optimizer/tree/main/skills/token-coach into .claude/skills/token-coach/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "token-coach", 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-coachType 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-coach -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install alexgreensh/token-optimizer token-coach --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-coach .agents/skills/token-coach && 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-coach" agent skill from https://github.com/alexgreensh/token-optimizer/tree/main/skills/token-coach into .agents/skills/token-coach/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "token-coach", 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-coach -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install alexgreensh/token-optimizer token-coach --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-coach .cursor/skills/token-coach && 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-coach" agent skill from https://github.com/alexgreensh/token-optimizer/tree/main/skills/token-coach into .cursor/skills/token-coach/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "token-coach", 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-coach--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-coach -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install alexgreensh/token-optimizer token-coach --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-coach .gemini/skills/token-coach && 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-coach" agent skill from https://github.com/alexgreensh/token-optimizer/tree/main/skills/token-coach into .gemini/skills/token-coach/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "token-coach", 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-coachInstalls 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-coach -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-coach .github/skills/token-coach && 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-coach" agent skill from https://github.com/alexgreensh/token-optimizer/tree/main/skills/token-coach into .github/skills/token-coach/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "token-coach", 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-coach -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-coach --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-coach .opencode/skills/token-coach && 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-coach" agent skill from https://github.com/alexgreensh/token-optimizer/tree/main/skills/token-coach into .opencode/skills/token-coach/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "token-coach", 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-coach- GitHub stars
- 2.5k
- Token cost
- ~2.5k tokens
- SKILL.md length
- 979 words
- Files
- 11 (incl. references, assets)
- Skills in repo
- 6
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Coaches a token-efficient Claude Code or Codex setup from the user's own usage data.
- Works in 5 steps: Collect the data → Ask what they want → Load what that goal needs → …
- Planning a build
- SKILL.md covers 1. Collect the data, 2. Ask what they want, 3. Load what that goal needs and 4. Coach, plus 2 more sections
- Calls python3
What it does
Token Coach is an agent skill from alexgreensh/token-optimizer. Coaches a token-efficient Claude Code or Codex setup from the user's own usage data. Use when planning a build, fixing a slow or costly setup, or deciding which workflow steps need a model.
Its SKILL.md is about 2.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 13 other files, including reference files and assets (for example `examples/coaching-session-agentic.md`, `examples/coaching-session-heavy-setup.md` and `examples/coaching-session-new-project.md`).
It sits in Agent Workflows. The repository describes itself as: Find the ghost tokens. Fix them. Survive compaction. Avoid context quality decay.
When your agent uses it
- Planning a build
- Deciding which workflow steps need a model
Example prompts
- “Use the token-coach skill to coach a token-efficient Claude Code or Codex setup from the user's own usage data”
- “/token-coach”
Requirements
- Python 3
Workflow steps
5 steps, taken from the step headings in SKILL.md.
- Collect the data
- Ask what they want
- Load what that goal needs
- Coach
- Agree the action plan
What it can do on your machine
Read from SKILL.md and the folder at commit 723c19b. 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
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
Token Coach loads about 2.5k tokens when it runs, and up to ~13k if it reads all its reference files. Until then it costs about 50 tokens; SKILL.md has 979 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); files beside SKILL.md 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 979 words (~2,507 tokens).
“A coaching conversation about where the user's tokens go and what to change, grounded in numbers measured on their machine. The deliverable is a short, prioritised action plan the user agrees with. For a full audit that edits their setup…”
- name
- token-coach
Files
SKILL.md and 10 other files (references, assets) in skills/token-coach of alexgreensh/token-optimizer.
- SKILL.md
- assets/coach-dashboard-tab.html
- examples/coaching-session-agentic.md
- examples/coaching-session-heavy-setup.md
- examples/coaching-session-new-project.md
- references/agentic-systems.md
- references/coach-patterns.md
- references/coaching-scripts.md
- references/deterministic-stages.md
- references/keepwarm-consent.md
- references/quick-reference.md
Open the folder on GitHubat commit 723c19b
Compare with similar skills
Token Coach 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 Coach this skillalexgreensh/token-optimizer | 2.5k | — | ~2.5k | Automated safety check: Pass | Custom licence | |
| Claude Code Agent Developmentanthropics/claude-plugins-official | 38k | 7 repos | ~2.8k | Automated safety check: Pass | Apache-2.0 | |
| Copilot Session Failure Analysisdotnet/maui | 23k | — | ~3.4k | Automated safety check: Pass | MIT | |
| Mem0 CLI Memory Commandsmem0ai/mem0 | 67k | — | ~2k | Automated safety check: Notes | Apache-2.0 | |
| Create Agentvectorize-io/hindsight | 48k | — | ~1.1k | Automated safety check: Pass | MIT | |
| Google Antigravity SDKgoogle-antigravity/antigravity-sdk-python | 3.7k | — | ~2.1k | Automated safety check: Notes | Apache-2.0 |
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More from alexgreensh/token-optimizer
Token Optimizer
alexgreensh/token-optimizer
Audits a Claude Code or Codex setup for context-window waste, fixes it with the user's approval, and measures the saving.
Fleet Auditor
alexgreensh/token-optimizer
Audits token waste and cost across Claude Code, Codex, OpenClaw, Hermes and OpenCode, with dollar savings.
Resume Checkpoint
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Pulls a prior session's checkpoint as fenced, scrubbed recovery context.
Token Dashboard
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Opens the Token Optimizer dashboard in the 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 Coach
What does Token Coach do?
Coaches a token-efficient Claude Code or Codex setup from the user's own usage data. Token Coach is an agent skill from alexgreensh/token-optimizer. Coaches a token-efficient Claude Code or Codex setup from the user's own usage data.
When should I use Token Coach?
Token Coach fits situations like: planning a build; deciding which workflow steps need a model.
How do I install Token Coach in Claude Code?
Run `npx skills add alexgreensh/token-optimizer --skill token-coach -a claude-code`. Or copy the skill folder (skills/token-coach in alexgreensh/token-optimizer) into .claude/skills/token-coach in your project. Claude Code loads it when a task matches its description.
How do I install Token Coach in Codex?
Run `npx skills add alexgreensh/token-optimizer --skill token-coach -a codex`. Or copy the skill folder (skills/token-coach in alexgreensh/token-optimizer) into .agents/skills/token-coach in your project. Codex loads it when a task matches its description.
Can I use Token Coach 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-coach -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-coach, .gemini/skills/token-coach, .github/skills/token-coach and .opencode/skills/token-coach in your project.
What does Token Coach need to run?
Going by SKILL.md and its folder, Token Coach needs the command-line tools its instructions call (python3). Our summary lists: Python 3.
Does Token Coach 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 Coach 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. Review the folder before installing.
What licence does Token Coach use?
Token Coach 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 Coach use?
About 2.5k tokens (SKILL.md is roughly 10k 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 11k tokens, read only when the agent opens those files.
What are the alternatives to Token Coach?
Skills that share tags, products or a category with Token Coach: Claude Code Agent Development (anthropics/claude-plugins-official, 38k stars), Copilot Session Failure Analysis (dotnet/maui, 23k stars), Mem0 CLI Memory Commands (mem0ai/mem0, 67k stars) and Create Agent (vectorize-io/hindsight, 48k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Token Coach?
alexgreensh (a GitHub user) maintains it in alexgreensh/token-optimizer, which has 2,534 GitHub stars. The repository holds 6 skills in this directory. The repository was last updated on October 10, 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.