Metrics

Worker queue health

GET
/api/v1/queue/health

Scheduling is ours, not the provider's: delayed sends, automation steps and throttle-deferred messages all wait in our queue. A growing pending_due_now or a large oldest_pending_age_seconds means mail is late; dead_letter means some gave up entirely. Worth alerting on.

Authorization

bearerAuth write
headerAuthorizationBearer <token>

An API key from the dashboard under Settings → API keys, sent as Authorization: Bearer aem_….

Authorization has two independent axes.

The scope is ranked — a key satisfies any requirement at or below its own tier:

  • read — see messages, contacts and metrics. Changes nothing, and cannot send.
  • write — everything read does, plus managing templates, contacts, automations, segments and suppressions. This is what editing a template needs.
  • admin — everything write does, plus sending configuration: domains, senders, webhook registration, kill switch, daily cap, brand.

There is no approve scope. It was a rung once; it is not one now, and a key requested with it is rejected.

The approval grant (can_approve) is a separate boolean, not a rung. Delivering mail to a real inbox needs write and the grant. Keeping them on separate axes is what makes the review gate a control rather than a convention: a key that may propose is not automatically a key that may approve its own proposal.

Give your application the lowest tier that works. Most need write and the grant — the dashboard mints that combination as Send + manage; Manage only is the same rung with the grant withheld.

Scope: write

Response Body

Queue health.

application/json
  1. response
pending_due_now?integer
oldest_pending_age_seconds?integer|null
processing?integer
dead_letter?integer
Example Request
curl -X GET 'https://sendandretain.com/api/v1/queue/health'
Example Response
{  "pending_due_now": 0,  "oldest_pending_age_seconds": 0,  "processing": 0,  "dead_letter": 0}