Beta: The Mixmax MCP server is in beta, available through Mixmax Labs at no extra cost. As it matures, some capabilities may become part of specific Mixmax plans.
Connect Claude to Mixmax and Claude can read your meetings, summaries, and sequences, and (once you turn on the correct permissions) act on them. Setup takes about two minutes.
Before you start
Turn on the MCP server experiment in Mixmax Labs: open Settings & feedback in the sidebar's Mixmax Labs section and toggle the experiment on. Enabling it adds MCP settings to your sidebar, where per-capability permissions live. For how Labs works, see the Mixmax Labs overview article.
What is an MCP?
In short, it's a connector that allows your AI tool, in this case Claude, to pull data from Mixmax. If write permissions are enabled, this connector also allows you to create sequences, send emails, and more, directly from your AI tool.
Connect from Claude.ai or Claude Desktop
Add Mixmax as a custom connector:
In Claude, click Customize in the sidebar (or go to Settings → Connectors).
Click Add, then Add custom connector.
Enter a name (e.g. "Mixmax") and the server URL
https://mcp.mixmax.com/mcp, then click Continue.
Mixmax will show as "Not connected." Click on it, then click Connect.
A browser window opens. Sign in to Mixmax and authorize Claude to access the data covered by whatever capabilities you've turned on in MCP settings.
Don’t see the option to add a custom connector?
If you’re on a Claude Team or Enterprise plan, your organization’s admin may have restricted the ability for regular users to add custom connectors - we see this fairly often. Here’s what to do:
Ask your Organization Owner or Primary Owner to add Mixmax at the org level: Organization settings → Connectors → Add, hover over Custom, choose Web, name it “Mixmax,” and enter the server URL
https://mcp.mixmax.com/mcp.Once your admin adds it, you don’t need to add it yourself as a custom connector. Go to Customize → Connectors, find Mixmax already in the list, and click Connect to sign in via OAuth.
To use it in a chat, click the + icon in the message bar, select Connectors, and toggle Mixmax on for that conversation.
Connect from Claude Code
Run this command in your terminal:
claude mcp add --transport http --scope user mixmax https://mcp.mixmax.com/mcp
Restart Claude Code.
Authenticate when prompted via the OAuth flow.
Tip: If you aren't automatically prompted, ask Claude something that uses Mixmax (e.g., "search my Mixmax sequences") - this triggers the OAuth flow in your browser.
Once connected, Claude can answer questions about your meetings, sequences, and outreach.
Signing in
The first time Claude calls Mixmax, the server answers with a 401. It kicks off the sign-in flow:
A browser window opens to the Mixmax sign-in page.
Sign in and approve access.
Claude retries the original request and your data appears.
You stay signed in after that. You'll only be asked to sign in again periodically, usually after a major Claude update, when new tools become available, after 90+ days of inactivity, or if an admin revokes access.
Questions you can answer with the MCP
Once you're connected, here are some prompts to get you started:
Sequences
"Build me a sequence targeting VPs of IT at companies that just raised a Series B."
"Who's replied to my Renewal Outreach sequence this week?"
"What's the drop-off point in my best-performing sequence, and what's one change that would fix it?"
Meetings
"What do I need to know before my call with [contact] today?"
"Draft a follow-up for the call I just had with [contact]."
Live Feed (engagement)
"Who's opened or clicked anything I've sent in the last 24 hours?"
"Has [contact] clicked the pricing link I sent Tuesday?"
"What's happened with my outreach since this morning?"
Tasks & reminders
"What's on my plate today?"
"Set a reminder on this email that only fires if they don't reply by Friday."
"Turn my meeting action items into tasks, calls, to-dos, and LinkedIn touches."
Note: Some of these (building or enrolling a sequence, sending email, setting reminders) use write capabilities - turn those on individually in MCP settings first; see "Before you start" above.
Troubleshooting
Symptom | What it means |
A tool is missing, or a write returns a permission error | Check your permissions: reads are on by default; writes are opt-in. Turn the capability on in MCP settings in Mixmax. |
The Labs experiment card isn't visible | Your admin turned it off or locked it, or the rollout hasn't reached your workspace yet. |
401 on the first call | Expected. It triggers the browser sign-in flow. |
Asked to sign in again | Happens periodically, usually after an update or 90+ days of inactivity, or when an admin revokes access. |
Claude can't see Mixmax at all | Check the experiment is on in Mixmax Labs, then check the connector was added in Claude's settings. |
Learn more
Get started with the Mixmax MCP server — what MCP is, supported clients, and how permissions work.
Mixmax MCP capabilities and use cases — what you can actually do once you're connected.
Manage your MCP settings — turn individual capabilities on or off.
Mixmax MCP server FAQ — cost, security, data access, and technical details.