MQTT Specifications

MQTT is an OASIS standard. The specification is managed by the OASIS MQTT Technical Committee.

MQTT 5 Specification

is an OASIS Standard. The specification is available as either
> single-page HTML or
> PDF.

MQTT 3.1.1 Specification

is an older ISO and OASIS Standard. The specification is available as either
> single-page HTML or
> PDF.

MQTT 3.1 Specification

For historical reference, the specification of MQTT v3.1 is available
> here.

MQTT-SN v1.2

formerly known as MQTT-S, is available
> here

MQTT for Sensor Networks is aimed at embedded devices on non-TCP/IP networks, such as Zigbee. MQTT-SN is a publish/subscribe messaging protocol for wireless sensor networks (WSN), with the aim of extending the MQTT protocol beyond the reach of TCP/IP infrastructure for Sensor and Actuator solutions. Read more about it on HiveMQ’s blog.

TC Member Organizations

MQTT Logos

Feel free to download the MQTT logo assets in .png, .svg, .eps and .jpg format.

> Save image as transparent PNG

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