ChatGPT connectors for real estate

By the Goliath research team · Checked November 12, 2026

ChatGPT connectors link ChatGPT to other apps. It can look things up there and, on some plans, take actions.

Apps, connectors and developer mode

OpenAI uses several names, and they overlap.

• Apps are integrations listed in ChatGPT's directory.
• Connectors are the general name for linking ChatGPT to another service.
• Developer mode lets you add any MCP server by its address, not only directory apps.

Which ChatGPT plans allow custom connectors?

As of November 2026, ChatGPT's free plan can't add custom MCP servers. Plus and Pro can through developer mode, but sources disagree on whether they can make changes.

• Free: no custom MCP servers.
• Plus and Pro: custom MCP servers through developer mode. Changes or lookups only is disputed.
• Business, Enterprise and Edu: full connectors, including actions that make changes.

Zillow's ChatGPT app

Zillow's ChatGPT app searches homes for sale and rent, with details and Zestimates. Like its Claude connector, it covers listed homes, not owners or distress filings.

More on our Zillow MCP page.

Adding Goliath

1. Check your plan (above).
2. Turn on developer mode. Open Settings, then Apps & Connectors (or Plugins).
3. Create the connector. Click Create.
4. Sign in to Goliath and choose "look things up" or a level that can make changes.
5. Turn it on in a chat and ask: "Show me pre-foreclosure filings in my county from the last 7 days."

The full walkthrough and first prompts are on our ChatGPT for real estate page. What to know about Goliath in ChatGPT:

• It sees only what your Goliath account can see.
• ChatGPT gets fewer Goliath tools than Claude: contacts and activity, properties by address, pipelines and deals, tasks and notes.
• From ChatGPT, it can't search by seller signal, skip trace, build call lists or send texts.

Known issues: connected but not callable

The most common in OpenAI's community forum and our testing:

• "Connected, but ChatGPT won't use it." The connector shows as connected but never gets called. Start a new chat, turn the connector on for it, and name it ("Using Goliath, find…").
• Too many tools. ChatGPT publishes no tool limit. Community reports say reliability drops with many tool-heavy connectors on at once.
• Write actions blocked. If ChatGPT answers but won't create or send anything, your plan may be read-only (see above).
• Menus moved. If the steps don't match your screen, OpenAI has probably renamed something. Search Settings for "developer mode".

Permissions

Before connecting anything that touches contacts or sends messages:

1. Start read-only until you trust it.
2. Read every action before you approve it. ChatGPT shows what it's about to do.
3. On Business, use the admin allowlist so your team can only add connectors you've approved.
4. Know how to revoke it. Remove it in ChatGPT, and delete its key in the other app.

More in MCP security.

Questions

Is ChatGPT or Claude better for a real estate MCP? Both work well for lookups, but Claude's rules for actions are simpler today.

Do I need developer mode for Zillow? No, Zillow is a directory app.

Can my whole team share one connector? On Business and Enterprise, an admin adds it and each person signs in, so their AI sees only their data.