Follow Up Boss MCP server

Follow Up Boss MCP Server — Built for Realtors

Talk to your Follow Up Boss CRM in plain English from Claude AI (or any MCP-compatible tool). 160 tools covering 100% of the official API, plus about/help meta tools. Built by a working real estate broker, not a dev shop.

Built by Ed Neuhaus — broker / owner at Neuhaus Realty Group in Austin, Texas. Licensed real estate broker since 2009, 19+ years in the business. I built this because I wanted to talk to my own FUB account in plain English. It's free for self-host use under the Elastic License 2.0.

Other things I'm working on

• EdNeuhaus.com — My builder profile, more on how this one's built: edneuhaus.com/projects/fub-mcp/
• NeuhausRE.com — My brokerage's site, AI-powered home search
• StaySTRA.com — Short-term rental investment analyzer
• Austin MLS MCP — hosted MLS MCP server (live MLS data via Claude, ChatGPT, Perplexity, and more)
• Kendall Creek Properties — Sister brokerage

Want to thank me?

1. Got a real estate referral? I take referrals from licensed agents in any state for clients moving to or from Texas. Reach out via neuhausre.com/contact.
2. Write about it. Blog post, LinkedIn, X — tag me and link to neuhausre.com.
3. Open an issue or PR if you find a bug or build something useful.

WARNING: This tool has full read AND write access to your Follow Up Boss account. It can create, update, and delete contacts, deals, tasks, notes, and other data in your CRM. Strongly recommended: back up your FUB data before turning this loose, unless you really know what you're doing. Always review AI-suggested actions before confirming changes to live data. The authors are not responsible for any data loss or unintended modifications to your FUB account.

### ⚠️ READ BEFORE SETTING FUBSYSTEM / FUBSYSTEM_KEY — TOS RISK

Several FUB API endpoints are marked "Restricted - Registered Systems Only" and require X-System + X-System-Key headers (this MCP exposes them as FUBSYSTEM + FUBSYSTEMKEY env vars). These endpoints include: webhooks, inbox apps, automations (2.0), text-message logging, person/deal attachments.**

These credentials are issued by FUB to approved third-party integration partners — not to end users of FUB. Setting these env vars is meant for developers who have registered a real third-party app with FUB and received their own dedicated X-System name and key.

DO NOT:

- Reuse X-System credentials from another app or integration you've found online.

- Make up a system name and hope FUB accepts it.

- Borrow a partner's credentials.

Doing any of the above to access restricted endpoints may violate Follow Up Boss's Terms of Service and could get your FUB account suspended or banned, with no notice. FUB's rate-limit + identification policy is documented at https://docs.followupboss.com/reference#identification.

If you don't have your own legitimate registered-system credentials, leave these env vars unset. The MCP will throw a clear, actionable error on every restricted tool ("requires X-System + X-System-Key …") rather than silently bypassing the gate. The unrestricted 130+ tools all work fine on a regular FUB API key.

Use at your own risk. The authors of this project are not responsible for any TOS violations, account suspensions, bans, or data loss arising from your use of the restricted endpoints.

Shortened. The full README is on GitHub.