404.directory is a Model Context Protocol (MCP) server: Risk preflight for AI Agent tool actions and Polymarket settlement and execution checks. Because it speaks the Model Context Protocol, AI assistants can use 404.directory as a set of callable tools instead of you copy-pasting between apps.
You can run 404.directory two ways: connect to the hosted endpoint at https://404.directory/mcp with no local install, or run it on your own machine via the npm package @mmvv1638/404-directory-mcp. The current release is v0.10.3, published under the MIT license, with source at MM-sheng/404-directory on GitHub.
On mcp.site, 404.directory sits in the AI & Agents category. Any MCP client can use it — Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed among them — via the install snippets below. If you maintain 404.directory for MM-sheng, claim this listing to verify ownership, earn the Verified badge, and keep the details current.
