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Agent skill

Ctx Stats

by mksglu in mksglu/context-mode

Show how much context window context-mode saved this session.

Custom licenceAuto-check passedAgent Workflows

Install Ctx Stats

skills CLI
$ npx skills add mksglu/context-mode --skill ctx-stats -a claude-code

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

GitHub CLI
$ gh skill install mksglu/context-mode ctx-stats --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/mksglu/context-mode.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/ctx-stats .claude/skills/ctx-stats && 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
ctx-stats
GitHub stars
26k
Token cost
~290 tokens
SKILL.md length
114 words
Files
1
Skills in repo
11
Repo updated
First seen
Licence
Custom licence

At a glance

Show how much context window context-mode saved this session.

  • Works in 3 steps: Call the mcpcontext-modectx_stats MCP… → CRITICAL: You MUST copy-paste the ENTIRE… → After the full output, add ONE sentence…
  • Tasks that involve Context engineering
  • SKILL.md covers Instructions and Purge
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Ctx Stats is an agent skill from mksglu/context-mode. Show how much context window context-mode saved this session. Displays token consumption, context savings ratio, and per-tool breakdown. Read-only — shows stats only, no reset capability. To wipe the knowledge base entirely, use ctxpurge instead. Trigger: /context-mode:ctx-stats

Its SKILL.md is about 290 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 Agent Workflows, covering Context engineering and Knowledge bases. It works with Model Context Protocol. The repository describes itself as: Context window optimization for AI coding agents. Sandboxes tool output (98% reduction), persists session memory, and enforces routing across 17 platforms via MCP + hooks.

When your agent uses it

  • Tasks that involve Context engineering
  • Tasks that involve Knowledge bases

Example prompts

  • “/ctx-stats”

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. Call the mcpcontext-modectx_stats MCP tool (no parameters needed).
  2. CRITICAL: You MUST copy-paste the ENTIRE tool output as markdown text directly into your response message. Do NOT summarize, do NOT…
  3. After the full output, add ONE sentence highlighting the key savings metric, e.g.

What it can do on your machine

Read from SKILL.md and the folder at commit 51a716f. 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

    No scripts in the folder and no shell commands in SKILL.md.

    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

Ctx Stats loads about 290 tokens when it runs. Until then it costs about 73 tokens; SKILL.md has 114 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~73
When it runs · the whole SKILL.md, loaded when a task matches
~290

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 114 words (~290 tokens).

“Show context savings for the current session.”

— opening of SKILL.md by mksglu, Custom licence
name
ctx-stats
user-invocable
true

Read the full SKILL.md on GitHub

Files

Just SKILL.md in skills/ctx-stats of mksglu/context-mode.

Open the folder on GitHubat commit 51a716f

Compare with similar skills

Ctx Stats 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.

Ctx Stats compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Ctx Stats this skillmksglu/context-mode26k—~290Automated safety check: PassCustom licence
MemPalace Memory SearchMemPalace/mempalace59k—~1.4kAutomated safety check: PassMIT
Base HelpChristopherKahler/base290—~2.6kAutomated safety check: PassCustom licence
Documentation Serverandrea9293/mcp-documentation-server343—~2.3kAutomated safety check: PassMIT
LemmalogJordyZomer/lemmalog329—~2.8kAutomated safety check: PassMIT
Cortex Mem MCPsopaco/cortex-mem313—~2.8kAutomated safety check: PassMIT

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More from mksglu/context-mode

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  • Context Mode Indexer

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  • Context Mode Knowledge Purge

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  • Context Mode Doctor

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Works with

Categories

Questions about Ctx Stats

What does Ctx Stats do?

Show how much context window context-mode saved this session. Ctx Stats is an agent skill from mksglu/context-mode. Show how much context window context-mode saved this session.

When should I use Ctx Stats?

Ctx Stats fits situations like: tasks that involve Context engineering; tasks that involve Knowledge bases.

How do I install Ctx Stats in Claude Code?

Run `npx skills add mksglu/context-mode --skill ctx-stats -a claude-code`. Or copy the skill folder (skills/ctx-stats in mksglu/context-mode) into .claude/skills/ctx-stats in your project. Claude Code loads it when a task matches its description.

How do I install Ctx Stats in Codex?

Run `npx skills add mksglu/context-mode --skill ctx-stats -a codex`. Or copy the skill folder (skills/ctx-stats in mksglu/context-mode) into .agents/skills/ctx-stats in your project. Codex loads it when a task matches its description.

Can I use Ctx Stats 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 mksglu/context-mode --skill ctx-stats -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ctx-stats, .gemini/skills/ctx-stats, .github/skills/ctx-stats and .opencode/skills/ctx-stats in your project.

What does Ctx Stats need to run?

SKILL.md names no scripts, command-line tools or credentials: Ctx Stats is instructions for the agent only.

Does Ctx Stats 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 Ctx Stats 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 Ctx Stats use?

Ctx Stats 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 Ctx Stats use?

About 290 tokens (SKILL.md is roughly 1.2k 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 Ctx Stats?

Skills that share tags, products or a category with Ctx Stats: MemPalace Memory Search (MemPalace/mempalace, 59k stars), Base Help (ChristopherKahler/base, 290 stars), Documentation Server (andrea9293/mcp-documentation-server, 343 stars) and Lemmalog (JordyZomer/lemmalog, 329 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Ctx Stats?

mksglu (a GitHub user) maintains it in mksglu/context-mode, which has 25,817 GitHub stars. The repository holds 11 skills in this directory. The repository was last updated on October 9, 2026.

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