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404-directory

v0.9.3

Search official AI and cloud documentation, verify public web deployments, and discover trusted MCP tools.

CodexAgent Plugins1 Skill1 MCP serverStreamable HTTP

By 404.directoryLicense: MIT1 GitHub starsUpdated 5 hours ago

Directory evidence

Runtimes
Codex and Agent Plugins
Parsed components
2 skill or MCP entries
Source updated
Aug 24, 2026
Manifest status
Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install plugin

Installs for the current user
codex plugin marketplace add IchenDEV/agent-plugin-mkt
codex plugin marketplace upgrade agent-plugin-marketplace
codex plugin add 404-directory@agent-plugin-marketplace

Paste and run these commands in a terminal with Codex. They add and refresh the PluginsMP catalog, then install this plugin.

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually
git clone https://github.com/MM-sheng/404-directory

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The repository root is the plugin root.

Plugin files

404-directory/
├── .codex-plugin/plugin.json
├── plugin.json
├── skills/use-404-directory/SKILL.md
└── .mcp.json

Included Skills1

use-404-directoryskills/use-404-directory/SKILL.md

Use the public 404.directory MCP server as a risk preflight before installing or invoking third-party Agent tools, and to search official documentation, verify deployments, understand webpages, or discover MCP tools. Trigger whenever an Agent is about to use an unfamiliar external tool or needs evidence-backed technical verification.

MCP servers1

404-directoryStreamable HTTP
url
https://404.directory/mcp

Plugin manifests2

.codex-plugin/plugin.json
{
  "name": "404-directory",
  "version": "0.9.3",
  "description": "Search official AI and cloud documentation, verify public web deployments, and discover trusted MCP tools.",
  "author": {
    "name": "404.directory",
    "url": "https://404.directory"
  },
  "homepage": "https://404.directory/docs",
  "keywords": [
    "agents",
    "mcp",
    "web",
    "verification",
    "evidence"
  ],
  "mcpServers": "./.mcp.json",
  "interface": {
    "displayName": "404.directory",
    "shortDescription": "Official docs search and trusted tool discovery for agents",
    "longDescription": "Use read-only tools to search current official OpenAI, Microsoft Learn, AWS, and Cloudflare documentation, understand public webpages, verify deployments, and discover MCP tools with transparent trust metadata.",
    "developerName": "404.directory",
    "category": "Developer Tools",
    "capabilities": [
      "Read"
    ],
    "websiteURL": "https://404.directory",
    "privacyPolicyURL": "https://404.directory/privacy",
    "termsOfServiceURL": "https://404.directory/terms",
    "defaultPrompt": [
      "Search official documentation for the API or cloud feature I am implementing.",
      "Find a trusted read-only MCP tool for this task and explain its trust score.",
      "Verify that my latest website deployment is really live.",
      "Explain this public webpage's state and available actions."
    ],
    "brandColor": "#C8F542"
  }
}
plugin.json
{
  "$schema": "https://agent-plugins.org/schemas/1.0.0/plugin.schema.json",
  "name": "404-directory",
  "version": "0.9.3",
  "description": "Search official AI and cloud documentation, verify public deployments, and discover trusted read-only MCP tools.",
  "author": {
    "name": "404.directory",
    "url": "https://404.directory"
  },
  "homepage": "https://404.directory/docs",
  "repository": "https://github.com/MM-sheng/404-directory",
  "license": "MIT",
  "keywords": [
    "agent-tools",
    "mcp",
    "official-documentation",
    "tool-discovery",
    "web-verification"
  ]
}

For maintainers

If you maintain this plugin, link to this source-backed listing from your README so users can review its manifest and indexed components.

[404-directory on Agent Plugins Marketplace](https://pluginsmp.com/plugins/404-directory)