Send call-ready leads to any dialer by webhook

When a lead is labeled Call, a webhook sends the name, phone, company and thread link to your dialer's API, or to Zapier or n8n, so dialers without a native integration still get the lead.

Calling

Zapier

n8nRevOpsSDR managerRevenue plan

When

Add LabelCall

Only if

Phone number is not empty

Then

Send a webhookSend the name, phone, company, labels and thread URL to your dialer, or to Zapier or n8n

Why teams run it

Your callers keep the dialer they like, and email interest still reaches it.

Set it up in Master Inbox

In Master Inbox, open Settings, then Workflows, and click Add a workflow.
Name it Send call-ready leads to any dialer by webhook.
Set the trigger to Add Label and choose Call.
Add a condition: Phone number is not empty.
Add the action Send a webhook: Send the name, phone, company, labels and thread URL to your dialer, or to Zapier or n8n.
Save the workflow and switch it to Active.

Or create it with the API

Everything in the workflow builder is also in the Master Inbox API. This request creates the same workflow. Replace the example ids with your own label, list and campaign ids from GET /workflows/filter-fields. This workflow also uses conditions: add them under trigger_config.conditions, as shown on the conditions page.

curl -X POST https://api.masterinbox.com/api/api-webhook/v1/api/workflows/create-workflow \
  -H "Authorization: Bearer $MASTER_INBOX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "name": "Send call-ready leads to any dialer by webhook",
  "trigger_type": "add_label",
  "trigger_config": {
    "label_ids": [
      176479
    ]
  },
  "action_configs": [
    {
      "action_type": "webhook",
      "webhook_url": "https://hooks.example.com/master-inbox",
      "webhook_payload_variables": [
        "name",
        "email",
        "company_name",
        "label_names",
        "thread_url",
        "text"
      ]
    }
  ]
}'

Full reference: workflow API guide and API docs.

Or ask Claude, ChatGPT or Grok to build it

Our workflow guide is written for AI agents to read. Give your assistant your API key and this prompt:

Read https://app.masterinbox.com/public-workflow-api.md and use my Master Inbox API key to create this workflow: "Send call-ready leads to any dialer by webhook". First call GET /workflows/filter-fields and look up my label, list and channel ids, then create the workflow and tell me what you set up.

Questions

Which dialers work?

Any dialer with an API or a Zapier or n8n connector.

Can call outcomes come back?

Yes. Post them to an Incoming Webhook workflow in Master Inbox and label the lead.

Can I build this workflow through the API?

Yes. Send the create-workflow request shown on this page with your Master Inbox API key. The API checks the payload first and lists every problem by field if anything is off.

Which plan includes this?

This workflow works on the Revenue plan. Every plan has unlimited users and starts with a free 7-day POC.