messh

messh is an SSH key management tool that publishes keys once for access with one command.

Messh is an SSH key management tool that lets developers publish their SSH keys once and allows anyone to grant access with a single command. It works by associating SSH keys with usernames instead of tokens, using public keys only while private keys stay securely on your machine. The setup takes three commands, involving a binary installation, Google sign-in authentication, and publishing via a signed challenge. It is designed for developers who manage agent access for tools like Claude Code, Codex, Gemini CLI, Aider, and Cursor. The platform ensures secure key handling without running a background daemon.

messh at a glance

Best for: Software engineer
Runs on: CLI
Pricing: Free
Released: October 2026
Category: AI coding tool
Website: messh.io

Key features

Publish SSH keys with a single command
Google sign-in authentication
Device code support on servers
Challenge signing with local SSH keys
Public key management without exposing private keys
Command line interface installation

Use it for

Publishing SSH keys for developer agents
Granting server access with one command
Managing SSH keys by username

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