SignSimple is a Model Context Protocol (MCP) server: Send PDFs for legally binding e-signature, free and unlimited. Track status; free legal templates. In practice that means any MCP-compatible AI assistant can call SignSimple's tools directly — the model decides when to use them in a conversation or agent run.
It's a hosted (remote) server — point your client at https://signsimple.app/mcp and you're connected, with nothing to install locally. The current release is v1.0.0.
SignSimple is listed under File System on mcp.site and works with any MCP client — Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed and the rest of the ecosystem — using the install snippets below. If you maintain SignSimple for signsimple.app, claim this listing to verify ownership, earn the Verified badge, and keep the details current.