Andrew-Notifier — self-hosted alerting gateway

Alerts POSTed here are broadcast asynchronously (with retries) to every
configured notification channel (ntfy).

ENDPOINTS

  POST /notify        Submit an alert. Requires an API key via
                      "Authorization: Bearer <key>" or "X-API-Key: <key>".

                      Body (JSON, max 64 KiB, unknown fields rejected):
                        message   string   required, non-empty
                        title     string   optional, default "Alert"
                        priority  string   optional: low | default | high |
                                           urgent (default "default")
                        tags      []string optional

                      Responses:
                        202  {"id":"...","status":"queued"}
                        400  invalid body   401  bad/missing key
                        503  queue full

  GET  /healthz       Health check, no auth. 200 {"status":"ok"}

  GET  /openapi.yaml  OpenAPI 3.1 spec for this service, no auth.

EXAMPLE

  curl -X POST https://<this-host>/notify \
    -H "X-API-Key: $API_KEY" \
    -d '{"message":"disk usage above 90%","priority":"urgent"}'