Review Open To Close properties and transaction records; add contacts and property notes. Hosted by usefulapi: connect it to Claude, ChatGPT, Cursor or any MCP client.
Turn on the Open To Close connector, then ask in plain words. The AI picks the tools.
For real estate transaction coordinators and teams using Open To Close.
List properties with their team and agent summaries, then review the related team and agent directories.
List the tasks associated with a property and read a selected task’s recorded details.
Search contacts by name or email and review the contacts associated with the selected property.
Search existing contacts, confirm the requested details and create a new contact when needed. Creating it does not attach it to a property.
Changes dataReview existing notes, confirm the property, content and visibility settings, then add the requested note. Inspect current notes before retrying an uncertain result.
Changes dataThe login page asks for your OpenToClose API token.
In app.opentoclose.com → Apps & API Dashboard, generate your API token. The token is used only to call OpenToClose on your behalf and is never shown to anyone. Usage and subscriptions belong to this API token; replacing it creates a separate connection identity.
Team and Enterprise: an Owner adds the connector for the organization first.
No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.
Run this command, then run /mcp in Claude Code to log in:
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"open-to-close": {
"url": "https://open-to-close.usefulapi.io/mcp"
}
}
} Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"open-to-close": {
"type": "http",
"url": "https://open-to-close.usefulapi.io/mcp"
}
}
} Run these commands. The second one opens the login page:
Windsurf, Cline, Zed and other MCP clients: add this URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser.
Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your OpenToClose API token. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Proper API token | $9/mo · $90/yr | 10,000 tool calls / month |
| Pro+per API token | $39/mo · $390/yr | 100,000 tool calls / month |
Each paid plan covers this Open To Close server only. Ask your AI to run opentoclose_upgrade and choose Pro or Pro+, billed monthly or yearly (it returns a Stripe Checkout link). If you already have Pro, ask to change it to Pro+. The change requires your confirmation, keeps your billing interval and charges the price difference for the rest of the period immediately. Cancel any time with opentoclose_cancel_subscription: your paid plan continues to the end of the paid period, with no refund for the current period, and asking to resume the same plan with opentoclose_upgrade before then undoes the cancel. Or write to [email protected].
opentoclose_list_agentsopentoclose_list_contactsopentoclose_list_contact_rolesopentoclose_list_file_rolesopentoclose_list_property_fieldsopentoclose_list_property_field_groupsopentoclose_list_property_field_sectionsopentoclose_list_property_templatesopentoclose_list_teamsopentoclose_list_time_zonesopentoclose_list_tagsopentoclose_list_propertiesopentoclose_list_property_contactsopentoclose_list_property_documentsopentoclose_list_property_notesopentoclose_get_property_noteopentoclose_list_property_tasksopentoclose_get_property_taskopentoclose_create_contactopentoclose_add_property_noteopentoclose_usage_statusopentoclose_request_featureopentoclose_upgradeopentoclose_cancel_subscriptionReview property assignments. Inspect a property’s tasks. Find contacts for a property. Create a contact after checking for duplicates. Add a confirmed property note. See what you can do for the details.
No. usefulapi is an independent service. It is not affiliated with or endorsed by Open To Close. The server calls the Open To Close API with your own Open To Close access, so it sees only the data that your account can see.
Yes. In Claude, add this server's URL as a custom connector. In ChatGPT, add it as a custom MCP server in Plugins. Then log in once. Cursor, VS Code, Claude Code and Codex work too. See the setup steps.
The login page asks for your OpenToClose API token. See Before you connect for where to find it.
No. Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your OpenToClose API token. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
The login stores them encrypted in the authorization grant of your connection. The server uses them to call the Open To Close API for you and to derive a private account id for usage metering. usefulapi does not show them on any page or in any reply. To stop all access, remove the connector and change or delete these credentials in Open To Close.
Yes, if you approve it. 2 of the 20 Open To Close tools can create or change data. The other 18 are marked read-only. Most MCP clients ask you to approve a tool call before it runs.
The Free plan gives 50 tool calls / month. Pro costs $9/mo or $90/yr, with 10,000 tool calls / month. Pro+ costs $39/mo or $390/yr, with 100,000 tool calls / month. Each subscription covers this Open To Close server only. Cancel any time: your paid plan then runs to the end of the paid period. Run opentoclose_usage_status to see how many calls you used.
Ask the AI to run opentoclose_upgrade and choose Pro or Pro+, billed monthly or yearly: it returns a Stripe Checkout link. If you already have Pro, ask to change it to Pro+. After you confirm, your existing subscription changes in place, keeps its billing interval and charges the price difference for the rest of the period immediately. To cancel, run opentoclose_cancel_subscription. Your paid plan continues to the end of the paid period.
Tell the AI what you wanted to do. It can send the request with opentoclose_request_feature. We store the text with the server name, the type of AI client and the tool you tried, not with your account, and read every request when we plan new tools. You can send up to 5 requests per day.
Any client that supports remote MCP servers (Streamable HTTP) with OAuth login: Claude (web and desktop), Claude Code, ChatGPT, Codex, Cursor, VS Code, Windsurf and others.
This is a Model Context Protocol endpoint — meant to be connected from an AI client, not opened in a browser. An invalid_token response at the URL is the auth gate working as designed; clients authenticate automatically.
Need a tool this server does not have, or a connection to another system? We build custom integrations and MCP servers.