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 cboone/agent-harness-pluginsnpx agentmods add plugins/cboone/agent-harness-plugins/create-plugingit clone --depth 1 https://github.com/cboone/agent-harness-pluginsGrade A, and why
create-plugin 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 yesterday.
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
{
"author": {
"name": "Christopher Boone"
},
"description": "Guide for creating new plugins in this repository with consistent structure and conventions.",
"homepage": "https://github.com/cboone/agent-harness-plugins",
"keywords": ["claude-code", "hooks", "plugins", "scaffolding", "skills"],
"license": "MIT",
"name": "create-plugin",
"repository": "https://github.com/cboone/agent-harness-plugins",
"skills": "./skills",
"version": "1.2.7"
}
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.
- yesterday First seen · 14 lines scan A b5989b39f0f3
create-plugin is a plugin published in the GitHub repository cboone/agent-harness-plugins (2 stars, last pushed 1mo 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.
Other plugins, from other repositories
tavs
Visual terminal state indicators for Claude Code sessions using OSC escape sequences. Changes background color and tab title based on Claude's state (processing, permission, idle, complete, compacting, subagent, toolerror).
token-guard
Token consumption guards for Claude Code. Warns on large file reads (100KB+), limits unique file reads per session, estimates token budget, and caps subagent spawns. From 800+ hours of autonomous operation data.
claude-plugins
claude context tools - Claude Code plugins for context-size awareness: subagent context reporting, cross-session send guarding, and main-session compaction management incl. an opt-in tmux managed mode.
subagent-context
Reports each subagent's context size to the orchestrating agent and warns before an overloaded subagent gets re-tasked.
ai-methodology
AI-assisted development methodology — scaffolding skills, talk pipeline (6 stages), landing page generator, context engineering, and design templates.
sidequest-plugin
Plugin marketplace listing 1 plugin: sidequest.