API overview - HookMyApp

What you can do

send WhatsApp messages through your connected number
receive incoming messages and status events in your webhook
list connected channels and fetch channel tokens
set or clear the webhook destination for a channel
rotate a channel token if it leaks

Authentication

Use two tokens:

Token	Use it for	Base URL
`hmok_` API key	Manage orgs, workspaces, channels, webhooks, and channel tokens	`https://api.hookmyapp.com`
`hmat_` channel token	Send WhatsApp messages through one connected channel	`https://gateway.hookmyapp.com/meta/v22.0`

Fetch the channel token with an hmok_ API key:

curl https://api.hookmyapp.com/meta/channels/{channelId}/token \
  -H "Authorization: Bearer hmok_..." \
  -H "X-Workspace-Id: ws_..."

Use the returned hmat_ token to send:

curl -X POST https://gateway.hookmyapp.com/meta/v22.0/{PHONE_NUMBER_ID}/messages \
  -H "Authorization: Bearer hmat_..." \
  -H "Content-Type: application/json" \
  -d '{"messaging_product":"whatsapp","to":"15551234567","type":"text","text":{"body":"Hello"}}'

You can also get the same channel token with hookmyapp channels env <channel>.

The version-pinned base URL (.../meta/v22.0) is the exact value HookMyApp emits as META_GRAPH_API_URL from hookmyapp channels env <channel>. Read the base URL from that variable instead of hardcoding the version, so a Meta Graph API version bump doesn’t leave your requests pinned to an old version.

Next steps

Send a message: Send WhatsApp messages.
Send text guide: Send a WhatsApp text message.
Receive webhooks: Handle inbound messages and status events.