Add devices and manage alerts in LibreNMS via its REST API
domain: librenms.org · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Create an API access token in the LibreNMS web UI at /api-access/, then send it on every request as the X-Auth-Token header against endpoints under /api/v0/.
Add a device with POST /api/v0/devices, supplying at minimum hostname plus SNMP version/community (v1/v2c) or SNMPv3 credential fields; pass force_add: true to skip the default reachability/duplicate-device checks.
List or filter devices with GET /api/v0/devices, using the type parameter (e.g. down, mac, hostname) combined with query= for search-style filters.
List alerts with GET /api/v0/alerts (filterable by state and severity), acknowledge one with PUT /api/v0/alerts/:id, or manage alert rules via GET/POST/PUT/DELETE on /api/v0/rules.
Call the bare authenticated GET /api/v0 endpoint to get a self-describing map of all routes actually available on your LibreNMS version, since routes can be added or renamed across releases.
Known gotchas
force_add bypasses duplicate-device/reachability checks but not duplicate-hostname checks — a hostname collision will still be rejected.
Numeric-looking JSON fields (e.g. device_id) are frequently returned as strings, not native numbers — don't assume strict JSON typing when parsing responses.
Alert rule creation has two different mechanisms depending on LibreNMS version (modern alert_operation_id referencing a reusable global operation, vs. legacy inline operations array) — check which your version uses before scripting rule management.
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