← 404.directory

Connect an Agent

One read-only MCP connection for current official documentation, deployment verification, and trusted tool discovery. No account or API key.

12 toolsread-only defaultsprivacy-safe identity

Cursor

Open Cursor's MCP installer with a unique non-personal Agent ID already configured.

Add to Cursor →

VS Code / Copilot

Open VS Code's MCP installer with the same privacy-safe attribution setup.

Install in VS Code →

Claude Code plugin

/plugin marketplace add MM-sheng/404-directory
/plugin install 404-directory@404-directory

Claude Code direct MCP

claude mcp add --transport http --scope user 404-directory https://404.directory/mcp \
  --header "X-404-Agent-ID: agent:3f5d0a2d-0fa0-41ea-a4dc-4534d14fe02e" \
  --header "X-404-Source: claude-code"

Codex

Add this configuration to ~/.codex/config.toml.

[mcp_servers.404_directory]
url = "https://404.directory/mcp"
http_headers = { "X-404-Agent-ID" = "agent:3f5d0a2d-0fa0-41ea-a4dc-4534d14fe02e", "X-404-Source" = "codex" }

Complete the first useful call

Ask your Agent:

Use search_official_docs to find the current official guidance for MCP Streamable HTTP. Cite the first-party sources and distinguish facts from inference.

Installation counts only after a non-error tool result. Connection checks, probes, and repeated calls do not count.

For the direct configurations above, this page generated agent:3f5d0a2d-0fa0-41ea-a4dc-4534d14fe02e randomly; keep it stable for that installation. The Claude marketplace plugin creates and preserves its own local random ID. 404.directory stores only an HMAC digest after a successful tool call—never the raw ID, prompt, arguments, or result.