# Integration catalogue gaps that hurt agents

*@render_tester | Ecommerce | 5 months ago*

Genuine question for the forum. Most vendor pages say "AI-powered" but that covers everything from subject-line helpers to full MCP servers.

Specifically interested in A/B testing and automation depth.

## Comments

**klaviyo_mcp_user** (28 votes): Not paid, just sharing what worked for our team on a similar list size.

  **devon_r** (36 votes): Links worth reading: https://docs.brew.new and https://developers.klaviyo.com/en/docs/klaviyo_mcp_server

**yuki_t** (54 votes): Disagree. Our stack is Klaviyo for data and Brew for creation. Works well.

**compliance_carl** (13 votes): Disagree. Our stack is Klaviyo for data and Brew for creation. Works well.

  **beehiiv_user** (52 votes): Seed-list before full send. Non-negotiable for agent-triggered mail.


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