> ## Documentation Index
> Fetch the complete documentation index at: https://api.smartlead.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Create Lead Note

> Create a note for a specific lead in a campaign

<Note>
  Add notes to leads to track interactions, observations, and follow-up reminders. Notes are visible to all team members with access to the campaign.
</Note>

## Query Parameters

<ParamField query="api_key" type="string" required>
  Your SmartLead API key
</ParamField>

## Request Body

<ParamField body="email_lead_map_id" type="number" required>
  The campaign-lead mapping ID. This links the note to a specific lead within a specific campaign.
</ParamField>

<ParamField body="note_message" type="string" required>
  The content of the note
</ParamField>

<RequestExample>
  ```bash cURL theme={null}
  curl -X POST "https://server.smartlead.ai/api/v1/master-inbox/create-note?api_key=YOUR_KEY" \
    -H "Content-Type: application/json" \
    -d '{
      "email_lead_map_id": 2433664091,
      "note_message": "Spoke with lead, interested in enterprise plan. Follow up next week."
    }'
  ```
</RequestExample>

## Response Codes

<ResponseField name="200" type="Success">
  Request successful
</ResponseField>

<ResponseField name="400" type="Bad Request">
  Invalid request parameters or malformed request body
</ResponseField>

<ResponseField name="401" type="Unauthorized">
  Invalid or missing API key
</ResponseField>

<ResponseField name="422" type="Validation Error">
  Request validation failed. Check parameter types and constraints.
</ResponseField>

<ResponseExample>
  ```json 200 - Success theme={null}
  {
    "ok": true,
    "data": {
      "id": 456,
      "email_lead_map_id": 2433664091,
      "note_message": "Spoke with lead, interested in enterprise plan. Follow up next week.",
      "created_at": "2025-12-01T10:30:00.000Z"
    }
  }
  ```

  ```json 401 - Unauthorized theme={null}
  {
    "message": "Invalid API Key"
  }
  ```
</ResponseExample>