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 johardi/claude-stacknpx agentmods add plugins/johardi/claude-stack/cstack-coregit clone --depth 1 https://github.com/johardi/claude-stackWrote 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/plugins/johardi/claude-stack/cstack-core)<a href="https://agentmods.dev/plugins/johardi/claude-stack/cstack-core"><img src="https://agentmods.dev/badge/plugins/johardi/claude-stack/cstack-core.svg" alt="Measured on agentmods" height="20"></a>Grade A, and why
cstack-core 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.
What it actually says
{
"name": "cstack-core",
"source": "./plugins/cstack-core",
"description": "Essential development bundle with development skills, audio notification hooks on Claude Code events, integrated MCP servers, and a statusline showing essential information about the current session",
"version": "1.15.0",
"homepage": "https://github.com/johardi/claude-stack",
"repository": "https://github.com/johardi/claude-stack",
"license": "MIT",
"keywords": [
"core",
"development"
],
"category": "code-development",
"strict": false
}What it installs
The manifest is a name and a version. 3 skills, 2 MCP servers travel with it, and installing the plugin installs all of them — 125 tokens a session between them. Each is measured on its own page, and each can be installed alone.
What ships with it
1 file beside marketplace.json#cstack-core in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 15 lines scan A 77bf38c0e4c5
cstack-core is a plugin published in the GitHub repository johardi/claude-stack (2 stars, last pushed 4mo ago), licensed MIT. 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 2026-09-03.
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