Use AssistCall with Follow Up Boss

AssistCall answers your business calls 24/7 and can send each call, message and booking to Follow Up Boss through Live API actions, Zapier, Make, n8n.

Follow Up Boss: A lead management CRM for real estate agents, teams and brokers that collects leads from many sources and runs follow-up through action plans, texting and calling.

Connects

Example call

A buyer calls at 9 pm about a listing. AssistCall answers, takes their name, number and timeline, and sends a General Inquiry to Follow Up Boss. The assigned agent opens Follow Up Boss to a new lead with the call summary, and the action plan has already started.

During a call, look up the caller by phone number in Follow Up Boss (GET /v1/people?phone=) with your API key, so the receptionist knows whether they are already a client
When a new buyer or seller calls, send a General Inquiry or Seller Inquiry event to Follow Up Boss (POST /v1/events) with the call summary, so your lead flow assigns an agent and the action plan starts
After each call, use Zapier's Log Call or Create Note action (or POST /v1/calls from n8n) to add the summary, duration and recording link to the contact's timeline

How it connects

Live API actions: During the call, the receptionist calls the app's API with your key to look up or create records.
Zapier: Send AssistCall events to a Zap (Webhooks by Zapier, Catch Hook), then use the app's Zapier actions. Needs a paid Zapier plan.
Make: Start a Make scenario with a custom webhook and use the app's Make modules.
n8n: Start an n8n workflow with a webhook node, then call the app with its node or an HTTP request.
Call forwarding: Forward your business line to AssistCall when busy, after hours or always. Works with any carrier.

About Follow Up Boss's API

Self-serve API: you can create a key in your account
Style: REST (JSON)
Authentication: API key with HTTP Basic auth (key as username, blank password); OAuth also supported
On Zapier: yes. On Make: yes.

Every user has their own API key under Admin > API, with the same access as that user (an agent's key sees only their people, a broker's key sees the whole account). Follow Up Boss asks software that uses the API for a customer to register a system and send X-System / X-System-Key headers. Rate limit is 250 requests per 10 seconds with a registered system key and 125 without; POST /v1/events has no limit. The docs say POST /v1/events is the right way to send leads, and new Registration, Seller Inquiry, Property Inquiry and General Inquiry events start action plans. Only the account owner can create webhooks. Zapier app: 7 triggers, 14 actions including Log Call, Create Note and Create Task, plus Find Contact. Make app: verified, maintained by Make.

Not included: no one-click Follow Up Boss app, no listing in Follow Up Boss's marketplace, no two-way sync, and no partnership with Follow Up Boss (Zillow Group).

Researched by the AssistCall team and checked against Follow Up Boss (Zillow Group)'s public pages on October 24, 2026. Follow Up Boss is a trademark of Follow Up Boss (Zillow Group). AssistCall is an independent product of Starling Global LLC and is not affiliated with, endorsed by, sponsored by or approved by Follow Up Boss (Zillow Group).

More Real estate CRMs integrations

BoldTrail (formerly kvCORE): An all-in-one platform for agents and brokerages that combines a CRM, IDX websites, lead generation and Smart Campaign automation, and is often provided by the brokerage.
BoomTown: A real estate platform for teams and brokerages that combines lead generation, IDX websites, a CRM and lead concierge services.
CINC: A lead generation and CRM platform for real estate teams and brokers that runs paid ads, IDX sites and lead follow-up in one system.
LionDesk: A low-cost CRM for real estate agents with contact management, drip campaigns, texting and video email.
Lofty: An AI-driven CRM, IDX website and lead generation platform for real estate agents, teams and brokerages, formerly called Chime.
Real Geeks: A sales and marketing platform for agents and teams that combines IDX websites, lead generation and the Lead Manager CRM.

All product and company names in this directory are trademarks or registered trademarks of their respective owners, used only to identify systems AssistCall can send call information to or receive information from. Their use does not imply any affiliation with or endorsement by their owners. AssistCall connects using signed webhooks, the business's own API keys, automation platforms (Zapier, Make, n8n) the business sets up in its own account, and call forwarding. AssistCall does not provide one-click connectors, marketplace apps, certifications or two-way record or calendar sync, and does not sign HIPAA business associate agreements. Vendor features, plans and API access can change; information last checked October 24, 2026.