Signals
Create Monitor
Subscribe to a signal
POST
Create a monitor — a subscription to a signal, delivered to your webhook. An API key can have many monitors.
A monitor is just:
signal + watch + url.
Request Body
string
required
The signal to subscribe to —
post_engagement. See Signal Catalog.string | array
required
Who to watch — the author’s profile URL. Pass one value or a list (up to 100 per request).
string
required
HTTPS endpoint where events are delivered.
string
Optional. When set, deliveries are signed via
X-Webhook-Signature (HMAC-SHA256 of the body).Response
number
Monitor ID
string
The subscribed signal
array
What’s being watched (the values you gave)
string
Delivery URL
boolean
Whether the monitor is active
string
ISO 8601 timestamp

