Who it is for
Real estate agents and teams that run frequent open houses and need the follow-up handled afterward.
Overview
HAVN organizes the work around open houses and showings for real estate agents, teams, and agencies. Contacts and lead status, property details, visitor check-ins, tasks, analytics, stored files, and reports live in one workspace reachable from phone, tablet, and browser.
The ChatGPT app gives an assistant structured access to that material. Practical uses named in the record include drafting follow-ups after a viewing, reviewing what a lead has done, summarizing how an open house performed, setting out next steps, and turning showing data into an update for the seller.
The stated aim is fewer loose notes after a property visit and cleaner lead capture, with follow-through driven from the record.
Real estate agents and teams that run frequent open houses and need the follow-up handled afterward.
Visitor check-in data feeds directly into seller reporting, connecting what happened at a viewing to what the seller is told.
Availability
HAVN is listed in the ChatGPT apps directory only. Binarts s.r.o. has no connector under the same domain in the Claude directory; 392 of the 3,150 products here are on both marketplaces, and this is not one of them.
ChatGPT apps are built on MCP, and the same server can back a Claude connector, so the absence is a distribution decision rather than a technical one.
ChatGPT listing
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This is an independent catalogue entry compiled by Node8 from HAVN's public marketplace listing as it stood in August 2026. Listing facts come from the marketplaces; the comparisons against the rest of the directory and any live-endpoint measurements are Node8's. Node8 is not affiliated with Binarts s.r.o., and inclusion here is not an endorsement.
Node8 builds MCP servers end to end: deciding which tools are worth exposing, the authentication and permission model, the review submissions, and the onboarding that gets them used. One server serves ChatGPT, Claude, and Microsoft Copilot.