tb-paho-mqtt-client
MQTT version 5.0/3.1.1 client class
Decision gist · record as of 2026-08-14
Yes, with conditions. The package is stable and well-maintained by Eclipse Foundation, with no known vulnerabilities and low install friction. However, the 494-day gap since last release warrants checking whether your use case can tolerate the known limitations: in-memory session storage (no persistence across restarts) and potential QoS 2 message duplication under certain reconnection scenarios. If those constraints are acceptable, it is a solid choice for MQTT connectivity.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.7 or later.
- Release 2.0+ contains breaking API changes; migration guide available in release notes.
- Low install friction with no runtime dependencies.
License · maintenance · safety
EPL-2.0 OR BSD-3-Clause (copyleft) — Dual-licensed under EPL-2.0 or BSD-3-Clause with copyleft treatment. Users may choose either license; EPL-2.0 requires source disclosure for modifications, while BSD-3-Clause is more permissive.
last release 2025-04-07 (494 days)
0 known vulnerabilities (OSV.dev, 2026-08-14) · 118,441 downloads/mo, #12,118 on PyPI
Alternatives
Verify before relying
pip install tb-paho-mqtt-client
import paho.mqtt.client as mqtt
mqttc = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2)
mqttc.connect("mqtt.eclipseprojects.io", 1883, 60)
mqttc.subscribe("topic/name")
mqttc.loop_forever()- Whether the 494-day gap since last release reflects stable maturity or abandonment risk
- Current state of the known session persistence limitation (in-memory only, not persisted across restarts)
- Whether QoS 2 double-delivery behavior under clean_session=True is acceptable for your use case
What it is and what it does
This is the Eclipse Paho MQTT Python client, a library for connecting applications to MQTT brokers to send and receive messages over a lightweight publish-subscribe protocol. It supports MQTT versions 5.0, 3.1.1, and 3.1, making it suitable for IoT and machine-to-machine communication where bandwidth and code footprint matter. The library provides a full Client class for fine-grained control, plus helper functions for simple one-off publish or subscribe operations.
The client offers multiple network loop modes: a threaded loop (loop_start/loop_stop) for non-blocking operation, a blocking loop (loop_forever) that handles reconnection automatically, and a manual loop for custom event integration. Callbacks allow your application to react to connection, message receipt, and publish acknowledgment events. Known limitations include in-memory-only session storage (sessions are lost on restart) and potential message loss for unacknowledged QoS 1 and QoS 2 messages.
Use it for
- Build IoT applications that publish sensor readings or receive commands from a central broker.
- Implement lightweight remote monitoring where network bandwidth is constrained.
- Create publish-subscribe messaging systems for real-time data distribution across devices.
- Integrate MQTT communication into Python applications with automatic reconnection handling.
- Subscribe to multiple topics and process incoming messages via callbacks.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, with conditions.
The package is stable and well-maintained by Eclipse Foundation, with no known vulnerabilities and low install friction. However, the 494-day gap since last release warrants checking whether your use case can tolerate the known limitations: in-memory session storage (no persistence across restarts) and potential QoS 2 message duplication under certain reconnection scenarios. If those constraints are acceptable, it is a solid choice for MQTT connectivity.
Install
tb-paho-mqtt-client on PyPI
Before you install
Low install friction with no runtime dependencies. Maintenance status is aging (494 days since last release), though the package remains supported for current Python versions (3.7+).
Requires Python 3.7 or later. Release 2.0+ contains breaking API changes; migration guide available in release notes.
License in practice
Dual-licensed under EPL-2.0 or BSD-3-Clause with copyleft treatment. Users may choose either license; EPL-2.0 requires source disclosure for modifications, while BSD-3-Clause is more permissive.
Quickstart
pip install tb-paho-mqtt-client
import paho.mqtt.client as mqtt
mqttc = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2)
mqttc.connect("mqtt.eclipseprojects.io", 1883, 60)
mqttc.subscribe("topic/name")
mqttc.loop_forever()Verify before relying
- Whether the 494-day gap since last release reflects stable maturity or abandonment risk
- Current state of the known session persistence limitation (in-memory only, not persisted across restarts)
- Whether QoS 2 double-delivery behavior under clean_session=True is acceptable for your use case
Package facts
| License | EPL-2.0 OR BSD-3-Clause copyleft |
| Python support | Supports the current Python release >=3.7 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | None |
| Maintenance | Aging 494 days since the last release |
| First released | |
| Downloads | 118,441 / month, #12,118 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 4 - BetaIntended Audience :: DevelopersLicense :: OSI ApprovedNatural Language :: EnglishOperating System :: MacOS :: MacOS XOperating System :: Microsoft :: WindowsOperating System :: POSIXProgramming Language :: PythonProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.7Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9Topic :: CommunicationsTopic :: Internet |
Evidence: tb_paho_mqtt_client-2.1.2-py3-none-any.whl
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See also paho-mqtt · tb-mqtt-client · gmqtt · aiomqtt · asyncio-mqtt · kuksa-client · types-paho-mqtt · pymysensors · HATasmota · solace-pubsubplus