ai-plugin-marketplace-guide

ai-plugin-marketplace-guide is a skill for Claude Code, Codex from nirholas/three.ws. It costs 52 tokens per session (1,055 once invoked), scanned A, original, Apache-2.0.

A guide to plugin.delivery, a marketplace and delivery service for AI plugins and MCP servers. It covers publishing, searching, versioning, reviews, security scanning, and installation into tools such as Claude Desktop, Cursor, and SperaxOS.

In plain words
What is it for?
Use it to publish plugins, find and install agent tools, manage versions, review listings, and distribute MCP servers, OpenAI plugins, tool manifests, or API specifications.
Why use it?
It addresses the problem of distributing and managing agent tools across different compatible applications. Developers can describe tools in formats such as MCP, OpenAI manifests, JSON schemas, or OpenAPI specifications.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

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/nirholas/three.ws/ai-plugin-marketplace-guide
Any agent
npx skills add nirholas/three.ws --skill ai-plugin-marketplace-guide
Clone the repo
git clone --depth 1 https://github.com/nirholas/three.ws

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.

agentmods badge for ai-plugin-marketplace-guide

README.md
[![agentmods](https://agentmods.dev/badge/skills/nirholas/three.ws/ai-plugin-marketplace-guide.svg)](https://agentmods.dev/skills/nirholas/three.ws/ai-plugin-marketplace-guide)
Your own site
<a href="https://agentmods.dev/skills/nirholas/three.ws/ai-plugin-marketplace-guide"><img src="https://agentmods.dev/badge/skills/nirholas/three.ws/ai-plugin-marketplace-guide.svg" alt="Measured on agentmods" height="20"></a>
Per session 52 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,055 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00052 $0.01055
Opus 5 $0.00026 $0.00528
Sonnet 5 $0.00010 $0.00211
Haiku 4.5 $0.00005 $0.00105

Measured 2d ago against content hash 4faca8cb7bb3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

ai-plugin-marketplace-guide scanned grade A with 1 finding 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 2d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl https://api.plugin.delivery/v1/search?q=defi%20yield&type=mcp-server
data/skills/development/ai-plugin-marketplace-guide/SKILL.md · 152 lines

How it starts

The opening of the file, as written. The whole thing — 152 lines — stays where its author put it; the contents beside it link to each section on GitHub.

plugin.delivery — AI Plugin Marketplace Guide

plugin.delivery is the marketplace and delivery infrastructure for AI plugins and MCP servers. Discover, install, and manage AI tools — like npm for AI.

What Is plugin.delivery?

Developers                    Users
    │                           │
    ▼                           ▼
 Publish Plugin ──→ plugin.delivery ──→ Install Plugin
    │                    │                    │
    ├── MCP Servers      ├── Search           ├── Claude Desktop
    ├── OpenAI Plugins   ├── Reviews          ├── Cursor
    ├── Tool Manifests   ├── Versions         ├── SperaxOS
    └── API Specs        └── Security Scan    └── Any MCP Host

Plugin Types

Type Format Compatible With
MCP Server MCP protocol Claude, Cursor, SperaxOS
OpenAI Plugin OpenAI manifest ChatGPT, compatible clients
Tool Manifest JSON Schema Any agent framework
API Spec OpenAPI 3.x REST clients, code gen

Publishing

Create Plugin Manifest

{
  "name": "sperax-defi-tools",
  "version": "1.0.0",
  "description": "Sperax DeFi tools — USDs yield, SPA staking, portfolio management",
  "author": "Sperax",
  "license": "MIT",
  "type": "mcp-server",
  "transport": "stdio",
  "command": "npx",
  "args": ["@nirholas/mcp-server"],
  "tools": [
    { "name": "getUSdsYield", "description": "Get current USDs auto-yield APY" },
    { "name": "getSPAPrice", "description": "Get SPA token price" },
    { "name": "getPortfolio", "description": "Get Sperax portfolio overview" }
  ],
  "categories": ["defi", "crypto", "arbitrum"],
  "homepage": "https://app.sperax.io"
}

Publish

# Install CLI
npm install -g @plugin-delivery/cli

# Login
plugin-delivery login

# Publish
plugin-delivery publish ./manifest.json

Discovery

Search

# CLI search
plugin-delivery search "defi yield"

# API search
curl https://api.plugin.delivery/v1/search?q=defi%20yield&type=mcp-server

Read the full file on GitHub · 152 lines

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.

  1. 2d ago First seen · 152 lines · 52 tokens per session scan A 4faca8cb7bb3

Subscribe to this mod's changes

ai-plugin-marketplace-guide is a skill published in the GitHub repository nirholas/three.ws (111 stars, last pushed today), licensed Apache-2.0. It adds 52 tokens to every session and 1,055 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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