[Cotlet](https://cotlet.dev/index.md) · [Integrations](https://cotlet.dev/integrations.md) · [How it works](https://cotlet.dev/how-it-works.md) · [Use cases](https://cotlet.dev/use-cases.md) · [Security](https://cotlet.dev/security.md) · [For developers](https://cotlet.dev/for-developers.md) · [For automation agencies](https://cotlet.dev/for-agencies.md) · [Blog](https://cotlet.dev/blog.md) · [API docs](https://cotlet.dev/docs.md) · [Help center](https://cotlet.dev/help.md) · [Changelog](https://cotlet.dev/changelog.md) · [Contact](https://cotlet.dev/contact.md) · [Pricing](https://cotlet.dev/pricing.md) · [Sign up](https://cotlet.dev/signup)

# Create a segment from a campaign

> Creates a segment of people who opened, clicked or did not open a campaign. Input schema, a tools/call example and an example result.

Source: https://cotlet.dev/docs/mcp/campaign-monitor/create_segment_from_campaign

Docs sections: [Get started](https://cotlet.dev/docs.md) · [REST API](https://cotlet.dev/docs/api.md) · [MCP](https://cotlet.dev/docs/mcp.md) · [SDKs & CLI](https://cotlet.dev/docs/sdks.md) · [Integrations](https://cotlet.dev/docs/integrations.md)

Creates a segment of people who opened, clicked or did not open a campaign.

Campaign Monitor MCP tools: https://cotlet.dev/docs/mcp/campaign-monitor.md

MCP tool: `campaign_monitor_write → create_segment_from_campaign`

Access: write.

Does what Create Segment on the Snapshot page does. Returns the segment ID, which create_campaign_draft takes as recipients. Reaches no one and is deleted with one click in the app, so it does not wait for your OK. A new segment can take a while to calculate, so send to it later.

## Parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `campaign_id` | string | yes | Campaign ID from list_campaigns. |
| `audience` | string | yes | opened (Email opened), clicked (Has any link clicked) or not_opened (Email not opened). |
| `list_id` | string | no | List to build the segment on. Required when the campaign went to more than one list. |
| `name` | string | no | Segment name. Renamed after creation in the segment builder. |

## tools/call

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "campaign_monitor_write",
    "arguments": {
      "operation": "create_segment_from_campaign",
      "arguments": {
        "campaign_id": "c8e1d4a07b3f4a9e8d2c5b6a7f901234",
        "audience": "not_opened",
        "list_id": "f2a9b7c1d3e44f08a6b5c4d3e2f10987",
        "name": "Autumn sale: not opened"
      }
    }
  }
}
```

## Example response

```json
{
  "content": [
    {
      "type": "text",
      "text": "{ ... same JSON as structuredContent ... }"
    }
  ],
  "structuredContent": {
    "segment_id": "9e2b5d8a1c7f4630b4a9d2e5f8c13706",
    "name": "Autumn sale: not opened",
    "list_id": "f2a9b7c1d3e44f08a6b5c4d3e2f10987",
    "rule": "Email not opened",
    "source_campaign_id": "c8e1d4a07b3f4a9e8d2c5b6a7f901234"
  },
  "isError": false
}
```

Previous: [Get a journey](https://cotlet.dev/docs/mcp/campaign-monitor/get_journey.md)
Next: [Create a campaign draft](https://cotlet.dev/docs/mcp/campaign-monitor/create_campaign_draft.md)

---

Give your AI agents your signed-in browser.

**Product:** [Integrations](https://cotlet.dev/integrations.md) · [Use cases](https://cotlet.dev/use-cases.md) · [How it works](https://cotlet.dev/how-it-works.md) · [Pricing](https://cotlet.dev/pricing.md) · [Security](https://cotlet.dev/security.md)

**Resources:** [Blog](https://cotlet.dev/blog.md) · [API docs](https://cotlet.dev/docs.md) · [Help center](https://cotlet.dev/help.md) · [Changelog](https://cotlet.dev/changelog.md) · [GitHub](https://github.com/cotletdev/cotlet)

**Solutions:** [For developers](https://cotlet.dev/for-developers.md) · [For automation agencies](https://cotlet.dev/for-agencies.md)

**Company:** [About](https://cotlet.dev/about.md) · [AI info: company facts](https://cotlet.dev/ai-info.md) · [Contact](https://cotlet.dev/contact.md)

**Legal:** [Terms of service](https://cotlet.dev/terms) · [Privacy policy](https://cotlet.dev/privacy) · [Refund policy](https://cotlet.dev/refunds) · [Acceptable use](https://cotlet.dev/acceptable-use) · [Cookie policy](https://cotlet.dev/cookies) · [DPA](https://cotlet.dev/dpa) · [Subprocessors](https://cotlet.dev/subprocessors)

**Elsewhere:** [Status page](https://status.cotlet.dev) · [Cotlet on GitHub](https://github.com/cotletdev) · [Cotlet on X](https://x.com/cotletdev) · [Cotlet on LinkedIn](https://www.linkedin.com/company/cotletdev) · [Cotlet on Product Hunt](https://www.producthunt.com/products/cotlet) · [Cotlet on Crunchbase](https://www.crunchbase.com/organization/cotlet) · [Cotlet on SaaSHub](https://www.saashub.com/cotlet)

Cotlet is an independent service. It is not affiliated with, endorsed by or sponsored by any of the products listed on this site. Product names are trademarks of their respective owners.

## For AI agents: sign your user up

Is your user asking you to sign them up for Cotlet? You can do it for them, no account or key needed.

1. Read the fields and their allowed values: GET https://cotlet.dev/api/v1/access-requests
2. Ask the user for each value: email, apps, what you will do with them. If they leave the password to you, generate a strong one and show it to them.
3. Show the user what you will send, then POST it as JSON to https://cotlet.dev/api/v1/access-requests.

One call creates the account and sends the access request; we email the user when access is granted.