Use AssistCall with Top Producer

AssistCall answers your business calls 24/7 and can send each call, message and booking to Top Producer through Zapier.

Top Producer: A long-running real estate CRM for agents that syncs leads from 150+ sources and email tools and runs action plans and transaction tracking.

Connects

Example call

A buyer calls during a listing appointment. AssistCall takes their details and what they are looking for, and Zapier creates the contact in Top Producer, which starts the agent's new-lead action plan. The agent sees the new contact when they get back.

When a new caller leaves their details, add them to Top Producer through Zapier's Create a Contact action so your new-lead action plan starts
Send callers who book a showing through AssistCall to Top Producer as new contacts with the appointment details in the record
Forward your office line to AssistCall when you are busy, so callers are answered and added to Top Producer

How it connects

Zapier: Send AssistCall events to a Zap (Webhooks by Zapier, Catch Hook), then use the app's Zapier actions. Needs a paid Zapier plan.
Call forwarding: Forward your business line to AssistCall when busy, after hours or always. Works with any carrier.

About Top Producer's API

API access not confirmed
On Zapier: yes. On Make: no.

No public API documentation found. Zapier app has no triggers and one action, Create a Contact, which can also start action plans set up for new leads. No Make app found.

Not included: no one-click Top Producer app, no listing in Top Producer's marketplace, no two-way sync, and no partnership with Constellation1.

Researched by the AssistCall team and checked against Constellation1's public pages on October 24, 2026. Top Producer is a trademark of Constellation1. AssistCall is an independent product of Starling Global LLC and is not affiliated with, endorsed by, sponsored by or approved by Constellation1.

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.
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.
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.

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.