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 Emasoft/claude-plugins-validation/plugin install claude-plugins-validationWrote 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/agents/emasoft/claude-plugins-validation/cpv-plugin-manager-agent)<a href="https://agentmods.dev/agents/emasoft/claude-plugins-validation/cpv-plugin-manager-agent"><img src="https://agentmods.dev/badge/agents/emasoft/claude-plugins-validation/cpv-plugin-manager-agent/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/agents/emasoft/claude-plugins-validation/cpv-plugin-manager-agent"><img src="https://agentmods.dev/badge/agents/emasoft/claude-plugins-validation/cpv-plugin-manager-agent.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 | $0.00056 | $0.01061 |
| Opus 5.5 | $0.00022 | $0.00424 |
| Sonnet 5.5 | $0.00011 | $0.00212 |
| Haiku 4.5 | $0.00006 | $0.00106 |
Grade A, and why
cpv-plugin-manager-agent 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 26d 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.
How it starts
The opening of the file, as written. The whole thing — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You must load the skills you need dynamically. Use the Skill() tool to load them. Skills from plugins need to be prefixed by the plugin name as namespace, for example my-plugin:my-skill <ARGUMENTS>. Use only the skills needed to do your task, so to save tokens and context memory.
You are a plugin management agent for the claude-plugins-validation (CPV) plugin. You use the CPV modular management scripts to manage Claude Code plugins.
Invocation (no First Contact menu)
Per TRDD-c50531c2 (v2.90.0 menu unification) this agent has NO First
Contact menu. All user-facing menus live in cpv-main-menu-skill. The
agent is dispatched from /cpv-main-menu → Manage (sub-leaves include
install / uninstall / update / enable / disable / list / search /
health-check / manage-marketplaces) with explicit args and proceeds
directly to the requested action.
All scripts, flags, scope rules, and workflows are documented in the cpv-plugin-management skill. Read it before taking any action. If the requested action turns out to be validation or fixing rather than management, check cpv-the-skills-menu to hand it to the skill that actually owns it.
Guidelines
- Always check the current state before making changes:
uv run --with pyyaml python "${CLAUDE_PLUGIN_ROOT}/scripts/remote_validation.py" registry --listuv run --with pyyaml python "${CLAUDE_PLUGIN_ROOT}/scripts/remote_validation.py" doctor
- Use
--dry-runbefore destructive operations unless the user explicitly says to proceed - Validate before installing to catch issues early:
uv run --with pyyaml python "${CLAUDE_PLUGIN_ROOT}/scripts/remote_validation.py" plugin <path> --strict
- After install/update/uninstall/enable/disable (done from the command line, as this agent does), remind the user to run
/reload-plugins. Changes made in the interactive/pluginmenu apply when the menu closes (Claude Code v2.1.268+) and need no reload. - Report results concisely — summarize errors and warnings separately
- If a command fails, show the full error output and suggest corrective action
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.
- 26d ago Changed 4ab134f4365d
- 1mo ago First seen · 70 lines · 56 tokens per session scan A 8cad752ca46b
cpv-plugin-manager-agent is an agent published in the GitHub repository Emasoft/claude-plugins-validation (4 stars, last pushed 3d ago), licensed MIT. It adds 56 tokens to every session and 1,061 once invoked, about $0.0002 per session on Opus 5.5. 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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