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October 2026
Historical note · October 2026 · Describes Brew MCP 3.0 as of October 2026. For current behavior, see MCP Authentication and Scoping.

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What Shipped

An assistant connected to Brew can send email and change contact data. Before October, only a campaign send or an audience run stopped for your approval. Firing a trigger or deleting contacts ran as soon as the agent called it. Through early October, Brew prepared its MCP server for Claude’s connector directory. The changes landed in stages and were complete with version 3.0.0 on October 12. Together they put a person in the loop for anything that reaches other people.

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Approval on More Actions

On OAuth and organization connections, these now return an approval request before they run:
  • firing a trigger;
  • deleting contacts or a contact field;
  • publishing an automation, resuming one, or stopping contacts mid-flow;
  • resuming a paused send or audience run;
  • testing to anyone but yourself.
The agent shows what would happen, you approve, and the same call runs once with its confirmation_id.

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Contacts Come From Your Systems

An agent no longer creates contacts. It updates people who are already in Brew, and a send from chat goes only to subscribed contacts. New contacts come from the app, a connected integration, or your own signup flow over the API.

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Clearer Tools

  • One action per tool. control_email_send split into pause_email_send, resume_email_send, and cancel_email_send, and audience runs split the same way.
  • Names that say what they do. save_contact became update_contact, import_contacts_csv became update_contacts_csv, and send_flare became report_tool_issue.
  • Safety hints on every tool. Each one says whether it reads, writes, overwrites, or reaches outside Brew, so your client can ask before the risky ones.
  • New guided workflows. configure_brand and run_audience_automation walk an agent through brand setup and a one-off automation run.
Image and GIF generation left MCP. The app and the API keep them.

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Get Started

Reconnect your assistant from the MCP Quickstart. MCP Tools lists all 89 tools, plus create_brand on organization connections.