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.
git clone --depth 1 https://github.com/isaacriehm/cairnWrote 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/isaacriehm/cairn/cairn-plugin)<a href="https://agentmods.dev/plugins/isaacriehm/cairn/cairn-plugin"><img src="https://agentmods.dev/badge/plugins/isaacriehm/cairn/cairn-plugin/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/plugins/isaacriehm/cairn/cairn-plugin"><img src="https://agentmods.dev/badge/plugins/isaacriehm/cairn/cairn-plugin.svg" alt="Reviewed on agentmods" width="80" height="20"></a>Grade A, and why
cairn 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 1mo 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
{
"$schema": "https://json.schemastore.org/claude-code-plugin-manifest.json",
"name": "cairn",
"displayName": "Cairn",
"version": "0.33.0",
"description": "Cairn — state + context-loading layer for AI coding agents.",
"author": {
"name": "Isaac Riehm",
"url": "https://github.com/isaacriehm"
},
"homepage": "https://github.com/isaacriehm/cairn#readme",
"keywords": [
"agent-context",
"decisions",
"invariants",
"ground-state",
"ai-memory"
],
"repository": "https://github.com/isaacriehm/cairn",
"license": "MIT"
}
What it installs
The manifest is a name and a version. 5 skills, 4 commands, 5 agents, 5 hooks, 1 MCP server travel with it, and installing the plugin installs all of them — 428 tokens a session between them. Each is measured on its own page, and each can be installed alone.
- Skill cairn-attention A 25 tokens
- Skill cairn-direction A 32 tokens
- Skill cairn-adopt-components A 26 tokens
- Skill cairn-resync A 34 tokens
- Skill cairn-adopt B 17 tokens
- Command cairn-resume A 21 tokens
- Command cairn-direction A 19 tokens
- Command cairn-init A 16 tokens
- Command cairn-statusline-setup B 23 tokens
- Agent reviewer A 39 tokens
- Agent curator-map A 42 tokens
- Agent component-annotator A 45 tokens
- Agent curator-reduce A 47 tokens
- Agent component-registrar A 42 tokens
- Hook PostToolUse A not measured
- Hook UserPromptSubmit A not measured
- Hook SessionEnd A not measured
- Hook SessionStart A not measured
- Hook Stop A not measured
- MCP server cairn A not measured
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.
- 1mo ago First seen · 22 lines scan A 9103082623e3
cairn is a plugin published in the GitHub repository isaacriehm/cairn (6 stars, last pushed 14d 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 2026-08-31.
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