ctx-stats

ctx-stats is a skill for Claude Code, Codex from opencue/cuecards. It costs 62 tokens per session (277 once invoked), scanned A, original, MIT.

A read-only report showing how much conversation space Context Mode saved during the current session. It includes token usage, savings, and a breakdown by tool.

In plain words
What is it for?
Use it to inspect Context Mode savings and review which tools used the most context.
Why use it?
It helps you see whether moving large processing tasks out of the conversation is reducing context usage.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/opencue/cuecards/ctx-stats
Any agent
npx skills add opencue/cuecards --skill ctx-stats
Clone the repo
git clone --depth 1 https://github.com/opencue/cuecards

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for ctx-stats

README.md
[![agentmods](https://agentmods.dev/badge/skills/opencue/cuecards/ctx-stats.svg)](https://agentmods.dev/skills/opencue/cuecards/ctx-stats)
Your own site
<a href="https://agentmods.dev/skills/opencue/cuecards/ctx-stats"><img src="https://agentmods.dev/badge/skills/opencue/cuecards/ctx-stats.svg" alt="Measured on agentmods" height="20"></a>
Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 277 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00062 $0.00277
Opus 5 $0.00031 $0.00138
Sonnet 5 $0.00012 $0.00055
Haiku 4.5 $0.00006 $0.00028

Measured 3d ago against content hash 3babe4989837, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ctx-stats scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agents/skills/ctx-stats/SKILL.md · 27 lines

What it actually says

Context Mode Stats

Show context savings for the current session.

Instructions

  1. Call the mcp__context-mode__ctx_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 collapse, do NOT paraphrase. The user must see the full tables without pressing ctrl+o. Copy every line exactly as returned by the tool.
  3. After the full output, add ONE sentence highlighting the key savings metric, e.g.:
    • "context-mode saved 12.4x — 92% of data stayed in sandbox."
    • If no data yet: "No context-mode calls yet this session."

Purge

  • ctx_purge(confirm: true) — Permanently deletes all indexed content from the knowledge base. Use /context-mode:ctx-purge for this.
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 27 lines · 62 tokens per session scan A 3babe4989837

Subscribe to this mod's changes

ctx-stats is a skill published in the GitHub repository opencue/cuecards (5 stars, last pushed 3d ago), licensed MIT. It adds 62 tokens to every session and 277 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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