/gnat

A terminal client for NATS and JetStream. Streams, consumers, KV and object stores, live messages, request/reply — all keyboard-first, all without leaving the terminal.

Why

The NATS CLI is solid for scripted use and awkward for exploration — the moment you want to watch messages flow, inspect consumer lag, or poke at a KV bucket, you’re stitching together five commands and a watch. gnat replaces that with a single TUI built around how you actually debug an event-driven system.

What it does today

• Live dashboard — message rates, throughput, server info, account limits
• Full CRUD for JetStream streams and consumers
• Consumer-lag dashboard across every stream
• Live message monitor (JetStream + core), with pause / replay policies
• KV and object store browse, edit, watch
• Subject explorer (hierarchical tree across streams)
• Request/reply playground with latency + history
• Connection profiles with credentials, tokens, NKey, TLS / mTLS
• : command bar with custom user-defined commands and template variables
• Bookmarks across sessions

See the launch post for screenshots and the configuration walk-through.

Install

go install github.com/galaxy-io/gnat/cmd/gnat@latest
# or
brew install galaxy-io/tap/gnat

Status

Actively developed and used daily inside Galaxy. Pre-1.0 — config schema and keybindings may still move.