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.
/plugin marketplace add ncoevoet/claude-markdown-health-checknpx agentmods add plugins/ncoevoet/claude-markdown-health-check/plugingit clone --depth 1 https://github.com/ncoevoet/claude-markdown-health-checkGrade A, and why
claude-markdown-health-check 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What it installs
The manifest is a name and a version. 1 command travel with it, and installing the plugin installs all of them — 78 tokens a session between them. Each is measured on its own page, and each can be installed alone.
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.
- 3d ago First seen · 25 lines scan A ec28ab6a3745
claude-markdown-health-check is a plugin published in the GitHub repository ncoevoet/claude-markdown-health-check (41 stars, last pushed 13d ago), with no licence file. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-08-30.
Other plugins, from other repositories
skill-based-architecture
Restructure oversized SKILL.md or scattered project rules into a well-organized Skill directory, with cross-tool thin shells, SessionStart hooks, Task Closure Protocol, and self-evolving workflows.
unsevered-memory
Persistent memory system for Claude Code with enforced context.
sonarqube-agent-plugins marketplace
Plugin marketplace listing 1 plugin: sonarqube.
exomem
Governed long-term memory over a markdown vault: raw sources stay immutable, conclusions are compiled with provenance, and nothing is deleted - it is superseded. Requires EXOMEMVAULTPATH to point at your vault; run exomem setup if you do not have one yet.
goalkeeper
A Stop-hook guard that won't let an AI agent quit until its goals are provably complete. Re-injects the unfinished checklist on every attempt to stop, and double-checks the work in strict mode.
kauri marketplace
Plugin marketplace listing 1 plugin: kauri.