Litmus Edge Manager (LEM)

3 min

Drive a Litmus Edge Manager tenant: list devices, projects, companies, licenses, and alerts.

All LEM tools talk to a cloud Edge Manager, not a single Litmus Edge. They need the LEM header set.

Tool	Description
lem_list_devices	List edge devices registered in a LEM project (paginated).
lem_get_device_details	Full LEM-side record for a single edge device (versions, license, last seen, config).
lem_list_device_versions	List Litmus Edge versions registered in a LEM project.
lem_list_device_groups	List device group labels (project-level groupings) defined in a LEM project.
lem_get_license_expiry	List devices whose license expires within the next N days.
lem_get_expired_licenses	List devices in a LEM project whose license has already expired.
lem_dashboard_usage	Project usage summary (device counts, license usage, deployment stats).
lem_get_project_alerts	List active project-level alerts (device offline, license issues, etc.).
lem_list_companies	List all companies on the LEM tenant with project / device / model counts.
lem_get_company_details	Full details for a single company by name (teams, license, quotas).
lem_list_company_projects	List all projects belonging to a given company.
lem_get_project_details	Single-project details (timezone, data TTL, allocated slots, billing plan).
lem_deployment_info	LEM tenant deployment info (version, build, release metadata).
lem_get_system_time	LEM server clock; useful when comparing edge timestamps.

When to use which

Fleet overview: lem_list_devices, lem_dashboard_usage, lem_get_project_alerts.

Single-device deep dive: lem_get_device_details. For executing actions on that device, see LEM Bridge.

Licensing: lem_get_license_expiry (upcoming) and lem_get_expired_licenses (already expired) for renewal workflows.

Tenant administration: lem_list_companies, lem_get_company_details, lem_list_company_projects, lem_get_project_details.

Comparing edge timestamps to LEM: lem_get_system_time gives the LEM server clock so you can sanity-check drift.

Header	Required	Notes
EDGE_MANAGER_URL	yes	Include https://.
EDGE_API_TOKEN	yes	API token issued by LEM.
EDGE_MANAGER_PROJECT_ID	optional	Default project id when omitted from arguments.
EDGE_MANAGER_ADMIN_URL	optional	Defaults to LEM host on port 8446.
VALIDATE_CERTIFICATE	optional	true to verify TLS certs on the LEM bridge (default false).

The Web UI's Config -> Litmus Edge Manager page manages multiple LEM connections and writes these headers automatically.

LEM Bridge - tunnel through LEM to call edge tools on a specific device without switching the active edge instance.