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MQTT Version 5.0 Protocol

OASIS Standard publish/subscribe messaging protocol for IoT and M2M communication. MQTT v5.0 defines the wire format and behavior of CONNECT, PUBLISH, SUBSCRIBE, UNSUBSCRIBE, PINGREQ, DISCONNECT and other control packets exchanged between MQTT clients and brokers over TCP (typically 1883, or 8883 with TLS) or WebSockets. Authentication is broker-specific and may include username/password, X.509 client certificates, or OAuth/JWT enhanced authentication.

MQTT Version 5.0 Protocol is one of 2 APIs that MQTT publishes on the APIs.io network, described by an AsyncAPI event-driven specification.

Tagged areas include MQTT 5.0, Protocol, Publish Subscribe, OASIS, and IoT. The published artifact set on APIs.io includes an AsyncAPI specification.

Requests are made against the base URL mqtt://broker.example.com:1883.

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI
Base URL
mqtt://broker.example.com:1883

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

asyncapi.yml Raw ↑

Other APIs MQTT publishes across the network.

MQTT Version 3.1.1 Protocol
Where this information came from

This is an independent, third-party profile of MQTT Version 5.0 Protocol, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

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