Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add artem-from-ua/claude-plugins/plugin install contextWrote 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.
[](https://agentmods.dev/skills/artem-from-ua/claude-plugins/ctx-show)<a href="https://agentmods.dev/skills/artem-from-ua/claude-plugins/ctx-show"><img src="https://agentmods.dev/badge/skills/artem-from-ua/claude-plugins/ctx-show/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/artem-from-ua/claude-plugins/ctx-show"><img src="https://agentmods.dev/badge/skills/artem-from-ua/claude-plugins/ctx-show.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00087 | $0.01214 |
| Opus 5 | $0.00044 | $0.00607 |
| Sonnet 5 | $0.00017 | $0.00243 |
| Haiku 4.5 | $0.00009 | $0.00121 |
Grade B, and why
ctx-show scanned grade B with 1 finding 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 10d 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.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
4. Global SessionStart hooks (from `~/.claude/settings.json`) How it starts
The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.
/ctx-show — Show Full Session Context
Assemble and display everything Claude Code loads at session start, in load order.
Flags
| Flag | Description |
|---|---|
--file |
(default) Write to /tmp/claude-context-{timestamp}.md and print the path |
--stdout |
Print full content to terminal |
Sources (in load order)
~/.claude/CLAUDE.md— global user instructions{project}/CLAUDE.md— project instructions~/.claude/projects/{hash}/memory/MEMORY.md— auto-memory- Global SessionStart hooks (from
~/.claude/settings.json) - Project SessionStart hooks (from
{project}/.claude/settings.json) - Plugin SessionStart hooks (enabled plugins in
~/.claude/plugins/cache/) - Skills — SKILL.md listings from user (
~/.claude/commands/,~/.claude/skills/), plugins, and project ({project}/.claude/commands/)
Each source is wrapped with <!-- Source: ... --> comments. Missing files are noted but do not cause errors.
Summary Table
After the file is written (or content printed), a summary table is printed to stderr with:
| Column | Description |
|---|---|
| Scope | User (global ~/.claude/) or Project (project-level + plugins) |
| Type | CLAUDE.md · Memory · Plugin hook · User hook · Project hook · Playbook Preset · Skill |
| Source/ID | Shortened path (~/, ./) or plugin identifier name@marketplace (vX.Y.Z) |
| Status | has content · missing/empty · command failed (shown as "script error" in Lines column) |
| Lines / Tokens | Content metrics; exact via Anthropic count_tokens API when ANTHROPIC_API_KEY is set, otherwise estimated as ~Tokens (bytes/3.8) |
| Context% | Each source's share of total context |
Playbook presets (from playbook@artem-from-ua) appear as individual rows when using playbook v0.3.1+.
Steps
- Run the script via Bash.
${CLAUDE_PLUGIN_ROOT}is a runtime env var pointing to the plugin root — use it to locate scripts. The script prints two paths on stdout: the context file path and the table file path.
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.
- 10d ago First seen · 85 lines · 87 tokens per session scan B dbc16e28641c
ctx-show is a skill published in the GitHub repository artem-from-ua/claude-plugins (11 stars, last pushed yesterday), licensed MIT. It adds 87 tokens to every session and 1,214 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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