"Let's Encrypt" matching MCP servers:

Enables AI agents to manage Nginx Proxy Manager (reverse proxies, streams, redirects, and Let's Encrypt certificates) through natural language commands.

A Model Context Protocol server that brings the capabilities of enigmapython library to LLMs, allowing them to encrypt and decrypt messages using historically accurate Enigma machine emulators

A proxy server that sits between MCP clients and servers, providing authentication, tool discovery, caching, and guardrail enforcement to protect MCP servers from malicious inputs.

Enables ChatGPT and Codex to request public keys, prepare and sign exact Nostr events, encrypt or decrypt NIP-04/NIP-44 payloads, and publish with per-relay acknowledgement, while the private key stays in the user's Alby, nos2x, or remote NIP-46 signer. Every operation is queued for local browser approval, with one-use signing intents and verification before anything is broadcast.

Enables timelock encryption using the Shutter Network, allowing users to encrypt messages that can only be decrypted after a specified future time. Supports natural language time parsing and provides trustless time-delayed communications.