Litmus Edge
Litmus Edge (LE)
Litmus Edge is the on-prem runtime that connects to industrial assets (PLCs, sensors, OPC servers, databases, MQTT brokers), normalizes the data, and routes it through analytics, apps, and integrations.
Module map
Module | Purpose | Protocol | Base path |
|---|---|---|---|
Dashboard | Liveness / utilization / counts | REST | /<module>/status (varies) |
DeviceHub | Devices, drivers, tags, browse, asset discovery | GraphQL + REST | /devicehub/v2, /devicehub/... |
Digital Twins | Hierarchical asset / data models | GraphQL | /digitaltwins/v2 |
DataHub | Internal data routing and storage configuration | REST | /datahub/... |
Flows Manager | Node-RED-style data flows | REST | /flows/... |
Analytics | TensorFlow models, processors, groups | REST | /analytics/... |
Applications | Edge app catalog and lifecycle | REST | /apps/... |
Integration | Cloud / database connectors (45 providers) | GraphQL | /cc/v2 |
OPC UA | Built-in OPC UA server (re-export DH tags) | GraphQL | /opcua/v2 |
System | Device management, network, certificates, backup, template | REST | /dm/..., /auth/v3/... |
Versions documented
LE 4.0.x (866 endpoints)
The current series. All modules above are fully documented. New in 4.0 vs 3.16:
- Integration: 112 endpoints (up from 29) - includes 45 Provider Schemas Reference + 45 Create Instance Provider Examples
- DeviceHub: 342 endpoints (up from 35) - includes 146 Create Device driver examples + 146 Register Types driver references
- Analytics, Flows, Digital Twins, Dashboard expanded
LE 3.16.x (437 endpoints)
Older LTS. Same module structure, smaller per-module coverage. Use this version if your fleet is on 3.16; otherwise prefer 4.0.x.
Auth
OAuth2 client_credentials at {{edgeUrl}}/auth/v3/oauth/token. See Authentication.
Common entry points
- Health check: GET /devicehub/version
- List drivers: GraphQL ListDriverGroups at /devicehub/v2
- List configured devices: GraphQL Devices at /devicehub/v2
- Dashboard snapshot: GET /dashboard/... (per-module status endpoints)