"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.

Slim OPNsense MCP Server — 62 tools for managing firewall infrastructure via the OPNsense REST API. Covers DNS/Unbound, Firewall rules, Diagnostics, Interfaces, DHCP (ISC + Kea), System/Backups, ACME/Let's Encrypt, and Firmware. No SSH, no shell, API-only with 3 runtime dependencies. AGPL-3.0 + Commercial dual-licensed.

Enables management of Nginx Proxy Manager instances for configuring proxy hosts, requesting Let's Encrypt SSL certificates, and managing access lists. It allows users to control their web proxy infrastructure through natural language commands in MCP-compatible environments.

Enables AI assistants to perform PDF operations like merge, split, compress, convert, encrypt, OCR, and summarize using natural language.

Rust-powered PDF toolkit over MCP: create, read, and analyze PDFs; extract text and entities for RAG; convert to Markdown; split/merge/rotate/reorder pages; manage form fields and annotations; encrypt documents. Runs locally via uvx oxidize-mcp.

An MCP server that gives AI agents durable, temporal memory over local markdown vaults, with tools for searching, asserting facts, querying point-in-time state, and reinforcing useful knowledge.

locidx

MCP server for PDF manipulation — create PDFs from Markdown with tables and formatting, fill forms, merge, split, encrypt, add QR codes, and more. 16 tools, zero external binaries, TypeScript-native. Install with npx -y @aryanbv/pdf-toolkit-mcp.

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

Secrets vault for Claude Code. Encrypt API keys, tokens and passwords with AES-256. Full audit logs, MCP access rules, and zero-knowledge mode. Secrets never appear in chat.

Enables encrypting and decrypting plain-text messages with AES-256-CBC using any passphrase, with automatic scrypt key derivation and a fresh random IV per call. It also exposes a resource describing the algorithm and ready-to-use prompts, and can be run directly inside VS Code Copilot Chat or the MCP Inspector.