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PTC ThingWorx WebSocket/AlwaysOn API

PTC ThingWorx AlwaysOn WebSocket API enables persistent bidirectional connections for industrial edge devices and remote assets, supporting real-time telemetry streaming, command and control, and device lifecycle management.

PTC ThingWorx WebSocket/AlwaysOn API is one of 8 APIs that ptc-thingworx publishes on the APIs.io network, described by an AsyncAPI event-driven specification.

Tagged areas include IoT, Manufacturing, Real-Time, and WebSocket. The published artifact set on APIs.io includes API documentation and an AsyncAPI specification.

This event API exposes 5 operations across 5 channels, and defines 9 schemas. It is described by AsyncAPI 2.6.0, at version 9.5.0.

The API connects through a single server, wss://{host}/Thingworx/WS (wss).

5 operations 5 channels 9 schemas

Metadata

The identity and technical contract details declared by the specification.

Specification
AsyncAPI 2.6.0
API Version
9.5.0
Base URL
https://api.thingworx.example.com
Resource Areas
1

Channels & Operations 5

Across 5 channels, the API surfaces 5 operations. Each is listed below with its action, channel, parameters, and response codes.

Channels 5
SUB
thing/property-update
Real-time property value update
onPropertyUpdate body
SUB
thing/event-fired
Thing event notification
onEventFired body
SUB
thing/alert
Thing alert notification
onAlert body
SUB
device/connect
Device connected event
onDeviceConnect body
SUB
device/disconnect
Device disconnected event
onDeviceDisconnect body

Messages & Schemas 9

The contract defines 9 schemas that model the data carried by its messages. The most detailed are AlertPayload (9 properties), PropertyUpdatePayload (5 properties), DeviceConnectionPayload (4 properties), EventFiredPayload (4 properties). Each schema is shown below with its type and property counts.

PropertyUpdateMessage
message
EventFiredMessage
message
AlertMessage
message
DeviceConnectMessage
message
DeviceDisconnectMessage
message
PropertyUpdatePayload
object
5 properties 4 required
EventFiredPayload
object
4 properties 3 required
AlertPayload
object
9 properties 5 required
DeviceConnectionPayload
object
4 properties 2 required

Specification

The full machine-readable AsyncAPI contract behind this narrative.

Source

ptc-thingworx-websocket-asyncapi.yml Raw ↑

Other APIs ptc-thingworx publishes across the network.

PTC Windchill REST API
ptc-thingworx DataShapes API
ptc-thingworx Events API
ptc-thingworx Properties API
ptc-thingworx Things API
ptc-thingworx ThingTemplates API
ptc-thingworx ValueStreams API
Where this information came from

This is an independent, third-party profile of PTC ThingWorx WebSocket/AlwaysOn API, 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.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

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