nats-io/nats.py

Health v2 · maintenance only

Adoption not part of the score

1243 stars · 262 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

nats.py is the official asyncio-based Python client for the NATS messaging system, supporting pub/sub, request/reply, and JetStream. It also includes a companion nats-server package for managing NATS server instances during development and testing.

Use cases

• publish and subscribe to messages over NATS from Python
• build async microservices communicating via NATS
• use JetStream persistent messaging from Python
• implement request/reply messaging with asyncio
• spin up NATS servers programmatically for tests
• connect Python apps to cloud-native NATS clusters

When to choose

• you need an async Python client for NATS or JetStream
• you're building event-driven or microservice architectures in Python
• you want official, well-maintained NATS support with TLS and JWT auth

When to avoid

• you need a synchronous/blocking NATS client
• you use Kafka, RabbitMQ, or another broker instead of NATS
• you're not working in Python

Facets

library · maturity active

message-queue http-client sdk microservices cloud-computing developer-tools python cross-platform nats asyncio pub-sub jetstream cloud-native messaging-client messaging

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