What is agent-plugin-installation?

A guide for installing and managing agent plugins, which are packages containing reusable skills, instructions, tools, and related files for coding agents.

Use it to list, install, inspect, update, enable, disable, or remove agent plugins in Neon Pilot.

It explains how to import compatible Codex or Claude Code plugins and what parts of a plugin are enabled or skipped.

agent-plugin-installation — Skill for Claude Code and Codex by patleeman: A guide for installing and managing agent plugins, which…

Install

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.

agentmods

npx agentmods add skills/patleeman/neon-pilot/agent-plugin-installation

Any agent

npx skills add patleeman/neon-pilot --skill agent-plugin-installation

Clone the repo

git clone --depth 1 https://github.com/patleeman/neon-pilot

Made for: Claude Code, Codex.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/patleeman/neon-pilot/agent-plugin-installation.svg)](https://agentmods.dev/skills/patleeman/neon-pilot/agent-plugin-installation)

Your own site

<a href="https://agentmods.dev/skills/patleeman/neon-pilot/agent-plugin-installation"><img src="https://agentmods.dev/badge/skills/patleeman/neon-pilot/agent-plugin-installation.svg" alt="Measured on agentmods" height="20"></a>

Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 479 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00025	$0.00479
Opus 5	$0.00013	$0.00239
Sonnet 5	$0.00005	$0.00096
Haiku 4.5	$0.00003	$0.00048

Measured 5d ago against content hash 85fc037165f1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

agent-plugin-installation 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 5d 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.

extensions/system-agent-plugins/skills/agent-plugin-installation/SKILL.md · 51 lines

What it actually says

Agent Plugin Installation

Use this skill when the user asks to install, add, inspect, update, enable, disable, remove, or explain a Codex or Claude Code style agent plugin.

Mental model

Agent plugins are external Codex or Claude Code style repositories or folders.
They can contain skills, instruction files, docs, MCP server definitions, hooks, and related files.
Neon Pilot imports compatible pieces through an extension wrapper so agents can use them.
Installed agent plugins are turned on by default. Treat turning a plugin off as an explicit user choice, not a normal installation step.

Install workflow

Use neon-pilot agent-plugins list --json if you need to check whether the requested plugin is already installed.
Use neon-pilot agent-plugins install <git-url> --json when the user supplies or clearly approves a Git repository URL.
Use neon-pilot agent-plugins install <folder> --local --json when the user supplies or clearly approves a local folder path.
After install, summarize the imported capabilities:
- skills
- instructions/docs
- MCP server definitions
- ignored hooks or compatibility warnings
Tell the user if the plugin installed but produced no supported capabilities.

Source safety

Only install from a source the user supplied or explicitly approved.
Do not invent a plugin repository URL.
If the source is ambiguous, ask for the exact Git URL or local folder.
If a plugin reports compatibility warnings or ignored hooks, surface them plainly.

Useful UI

Users can manage installed plugins in Settings > Agent plugins. The same operations are available through:

neon-pilot agent-plugins list
neon-pilot agent-plugins install
neon-pilot agent-plugins enable
neon-pilot agent-plugins disable
neon-pilot agent-plugins check-updates
neon-pilot agent-plugins update
neon-pilot agent-plugins remove

Changes

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.

5d ago First seen · 51 lines · 25 tokens per session scan A 85fc037165f1

Subscribe to this mod's changes

agent-plugin-installation is a skill published in the GitHub repository patleeman/neon-pilot (23 stars, last pushed 1mo ago), licensed MIT. It adds 25 tokens to every session and 479 once invoked, about $0.0001 per session on Opus 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 2026-08-30.

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