Create Custom Signal Entry
Duo
Create Custom Signal Entry
Send data to a Duo custom signal webhook to generate leads.
POST
Create Custom Signal Entry
Send data from any external tool (Zapier, Clay, RB2B, your own app, etc.) into Duo Copilot via a webhook. Whenever new data arrives, Duo generates a signal and can automatically create personalized sequences for each lead.
You can include any additional fields (e.g.
Authentication
This endpoint uses a token-based URL instead of the standard API key authentication. Each custom signal has a unique token embedded in its webhook URL. You can find your token in the Duo Copilot signal settings.Path Parameters
The unique token for your custom signal. Found in the Duo Copilot signal settings.
Request Body
The request body is a dynamic JSON object. You can send any fields that are relevant to your use case — there is no fixed schema. After sending a test request, Amplemarket will auto-map your fields to the identifiers it needs to look up each person or company.For people signals, include at least one of:
| Field | Description |
|---|---|
linkedin_url | LinkedIn profile URL |
email | Email address |
full_name + company_name | Person name combined with company name or domain |
For company signals, include at least one of:
| Field | Description |
|---|---|
company_name | Company name |
company_domain | Company domain |
company_linkedin_url | Company LinkedIn URL |
pages_visited, form_responses, use_case) that you want Duo to use as context for AI personalization.
Nested objects are supported — Amplemarket will flatten them into dot-notation paths (e.g.
person.name, company.domain) for field mapping.Response
HTTP status code.
| Status | Meaning |
|---|---|
202 Accepted | Request received successfully |
400 Bad Request | Malformed JSON, empty body, or non-object payload |
404 Not Found | Invalid webhook token |
413 Content Too Large | Payload exceeds 1 MB |
Test data vs. live data: During initial signal setup, requests are treated as test data for
configuring field mappings — no leads are generated. Once the signal is saved, all subsequent
requests generate real leads.