Agent Specification
ruvnet/ruflo
Agent skill for specification - invoke with $agent-specification
Analyze the user's last prompt for clarity, scope and specificity — give a quality score and concrete suggestions to make the next prompt produce better results
MITAuto-check passed
Install Cco Coach
$ npx skills add egorfedorov/claude-context-optimizer --skill cco-coach -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install egorfedorov/claude-context-optimizer cco-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/egorfedorov/claude-context-optimizer.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/cco-coach .claude/skills/cco-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 "cco-coach" agent skill from https://github.com/egorfedorov/claude-context-optimizer/tree/main/skills/cco-coach into .claude/skills/cco-coach/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cco-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/egorfedorov/claude-context-optimizer/tree/main/skills/cco-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 egorfedorov/claude-context-optimizer --skill cco-coach -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install egorfedorov/claude-context-optimizer cco-coach --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/egorfedorov/claude-context-optimizer.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/cco-coach .agents/skills/cco-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 "cco-coach" agent skill from https://github.com/egorfedorov/claude-context-optimizer/tree/main/skills/cco-coach into .agents/skills/cco-coach/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cco-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 egorfedorov/claude-context-optimizer --skill cco-coach -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install egorfedorov/claude-context-optimizer cco-coach --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/egorfedorov/claude-context-optimizer.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/cco-coach .cursor/skills/cco-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 "cco-coach" agent skill from https://github.com/egorfedorov/claude-context-optimizer/tree/main/skills/cco-coach into .cursor/skills/cco-coach/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cco-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/egorfedorov/claude-context-optimizer.git --path skills/cco-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 egorfedorov/claude-context-optimizer --skill cco-coach -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install egorfedorov/claude-context-optimizer cco-coach --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/egorfedorov/claude-context-optimizer.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/cco-coach .gemini/skills/cco-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 "cco-coach" agent skill from https://github.com/egorfedorov/claude-context-optimizer/tree/main/skills/cco-coach into .gemini/skills/cco-coach/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cco-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 egorfedorov/claude-context-optimizer cco-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 egorfedorov/claude-context-optimizer --skill cco-coach -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/egorfedorov/claude-context-optimizer.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/cco-coach .github/skills/cco-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 "cco-coach" agent skill from https://github.com/egorfedorov/claude-context-optimizer/tree/main/skills/cco-coach into .github/skills/cco-coach/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cco-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 egorfedorov/claude-context-optimizer --skill cco-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 egorfedorov/claude-context-optimizer cco-coach --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/egorfedorov/claude-context-optimizer.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/cco-coach .opencode/skills/cco-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 "cco-coach" agent skill from https://github.com/egorfedorov/claude-context-optimizer/tree/main/skills/cco-coach into .opencode/skills/cco-coach/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cco-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
cco-coach- GitHub stars
- 114
- Token cost
- ~438 tokens
- SKILL.md length
- 188 words
- Files
- 1
- Skills in repo
- 13
- Repo updated
- First seen
- Licence
- MIT
At a glance
Analyze the user's last prompt for clarity, scope and specificity — give a quality score and concrete suggestions to make the next prompt produce better results
- SKILL.md covers How to use, What the score means, Presentation and When to suggest this proactively
- Calls node
What it does
Cco Coach is an agent skill from egorfedorov/claude-context-optimizer. Analyze the user's last prompt for clarity, scope and specificity — give a quality score and concrete suggestions to make the next prompt produce better results
Its SKILL.md is about 440 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
The repository describes itself as: Claude Code plugin that tracks token usage, identifies wasted context, and saves 30-50% on API costs. Heatmaps, ROI reports, budget alerts, efficiency scores, git-aware… The licence is MIT.
Example prompts
- “/cco-coach”
Requirements
- Pre-approved tools (allowed-tools): Bash(node ${CLAUDE_PLUGIN_ROOT}/src/prompt-coach.js:*), Read
What it can do on your machine
Read from SKILL.md and the folder at commit f6f20ee. 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:
Bash(node ${CLAUDE_PLUGIN_ROOT}/src/prompt-coach.js:*)Read
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
node
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
Cco Coach loads about 438 tokens when it runs. Until then it costs about 43 tokens; SKILL.md has 188 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
The full file from egorfedorov/claude-context-optimizer at commit f6f20ee, republished under its MIT licence (© egorfedorov). 188 words, ~438 tokens.
Download SKILL.mdSave it as
.claude/skills/cco-coach/SKILL.md (or your agent's skills folder).- name
- cco-coach
- description
- Analyze the user's last prompt for clarity, scope and specificity — give a quality score and concrete suggestions to make the next prompt produce better results
- allowed-tools
- Bash(node ${CLAUDE_PLUGIN_ROOT}/src/prompt-coach.js:*), Read
- license
- MIT
Prompt Coach
When the user runs /cco-coach or asks for "prompt feedback" / "оцени мой промпт", run the analyzer on the user's last natural-language ask (or on text they provide).
How to use
If the user passes text after the command (e.g. /cco-coach add login screen):
node ${CLAUDE_PLUGIN_ROOT}/src/prompt-coach.js analyze "the prompt text here"If no text given, show recent prompt history and average score:
node ${CLAUDE_PLUGIN_ROOT}/src/prompt-coach.js history 10What the score means
The coach grades on four dimensions (S/A/B/C/D/F):
- Specificity — does the prompt name files, line numbers, identifiers?
- Scope — is the change bounded? "fix bug in src/auth.js:42" beats "fix all bugs"
- Success criteria — how do we know it's done? (tests pass, error gone, etc.)
- Length — too short usually means under-specified; too long buries the ask
Presentation
After running the script, summarise the top 1–3 suggestions in plain language and offer to rewrite the prompt for the user. If they say yes:
node ${CLAUDE_PLUGIN_ROOT}/src/prompt-coach.js improve "the original prompt"Then show the improved version with a brief diff explaining what changed.
When to suggest this proactively
If you notice the user's prompt scored ≤60 in the last UserPromptSubmit hook and a task is going off the rails (lots of reads with no edits), gently suggest /cco-coach to refine.
© egorfedorov, 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/cco-coach of egorfedorov/claude-context-optimizer.
Open the folder on GitHubat commit f6f20ee
Compare with similar skills
Cco 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 |
|---|---|---|---|---|---|---|
| Cco Coach this skillegorfedorov/claude-context-optimizer | 114 | — | ~438 | Automated safety check: Pass | MIT | |
| Agent Specificationruvnet/ruflo | 74k | 2 repos | ~1.8k | Automated safety check: Pass | MIT | |
| Specificity Managementthedaviddias/Front-End-Checklist | 74k | — | ~477 | Automated safety check: Pass | MIT | |
| Interview Coachsickn33/agentic-awesome-skills | 47k | 2 repos | ~751 | Automated safety check: Pass | MIT | |
| Create Specificationgithub/awesome-copilot | 40k | 1 repos | ~1.4k | Automated safety check: Pass | MIT | |
| Update Specificationgithub/awesome-copilot | 40k | 1 repos | ~1.4k | Automated safety check: Pass | MIT |
Similar skills
Specificity Management
thedaviddias/Front-End-Checklist
A skill your agent uses when reviewing stylesheets, component styles, and responsive behavior related to Keep CSS specificity low and flat.
Interview Coach
sickn33/agentic-awesome-skills
Full job search coaching system — JD decoding, resume, storybank, mock interviews, transcript analysis, comp negotiation.
- Official
Create Specification
github/awesome-copilot
Create a new specification file for the solution, optimized for Generative AI consumption.
- Official
Update Specification
github/awesome-copilot
Update an existing specification file for the solution, optimized for Generative AI consumption based on new requirements or updates to any existing code.
Claude Coach
alirezarezvani/claude-skills
Personal coach that teaches users to become Claude power users.
More from egorfedorov/claude-context-optimizer
All 13 skills in this repoSmart Loader
egorfedorov/claude-context-optimizer
Automatically suggests optimal files to preload based on the user's task description and historical context patterns.
Cco
egorfedorov/claude-context-optimizer
Context Control Center — one screen for budget, $ spent, tokens saved, waste, last prompt grade, the active task, and ready-to-run optimization actions
Cco Budget
egorfedorov/claude-context-optimizer
Configure token budget limits, auto-compact settings, and view current budget status (model-aware — Claude 5 lineup, Opus 5.5 default fallback, full 1M context at standard price)
Cco Config
egorfedorov/claude-context-optimizer
View and tune CCO's behavior thresholds — re-read warnings, cache staleness, prompt-coach length bands, and the /cco-pack budget cap
Cco Patterns
egorfedorov/claude-context-optimizer
Share learned file patterns across a team — export an anonymized digest of what's usually waste/useful/co-edited, and import a teammate's so a fresh clone benefits day one
Cco Shield
egorfedorov/claude-context-optimizer
Show ContextShield status and waste protection stats; suggest or apply .contextignore rules from historical waste
Questions about Cco Coach
What does Cco Coach do?
Analyze the user's last prompt for clarity, scope and specificity — give a quality score and concrete suggestions to make the next prompt produce better results. Cco Coach is an agent skill from egorfedorov/claude-context-optimizer.
How do I install Cco Coach in Claude Code?
Run `npx skills add egorfedorov/claude-context-optimizer --skill cco-coach -a claude-code`. Or copy the skill folder (skills/cco-coach in egorfedorov/claude-context-optimizer) into .claude/skills/cco-coach in your project. Claude Code loads it when a task matches its description.
How do I install Cco Coach in Codex?
Run `npx skills add egorfedorov/claude-context-optimizer --skill cco-coach -a codex`. Or copy the skill folder (skills/cco-coach in egorfedorov/claude-context-optimizer) into .agents/skills/cco-coach in your project. Codex loads it when a task matches its description.
Can I use Cco 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 egorfedorov/claude-context-optimizer --skill cco-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/cco-coach, .gemini/skills/cco-coach, .github/skills/cco-coach and .opencode/skills/cco-coach in your project.
What does Cco Coach need to run?
Going by SKILL.md and its folder, Cco Coach needs the command-line tools its instructions call (node). Its frontmatter pre-approves these tools: Bash(node ${CLAUDE_PLUGIN_ROOT}/src/prompt-coach.js:*), Read.
Does Cco 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 Cco 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 Cco Coach use?
Cco Coach is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Cco Coach use?
About 438 tokens (SKILL.md is roughly 1.8k 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 Cco Coach?
Skills that share tags, products or a category with Cco Coach: Agent Specification (ruvnet/ruflo, 74k stars), Specificity Management (thedaviddias/Front-End-Checklist, 74k stars), Interview Coach (sickn33/agentic-awesome-skills, 47k stars) and Create Specification (github/awesome-copilot, 40k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Cco Coach?
egorfedorov (a GitHub user) maintains it in egorfedorov/claude-context-optimizer, which has 114 GitHub stars. The repository holds 13 skills in this directory. The repository was last updated on September 30, 2026.
Source: egorfedorov/claude-context-optimizer on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.