Read buildings, equipment, inventory, resources, attachments and users in FMX. Hosted by usefulapi: connect it to Claude, ChatGPT, Cursor or any MCP client.
Turn on the FMX connector, then ask in plain words. The AI picks the tools.
For facilities and maintenance teams that keep building, equipment and inventory records in FMX.
List the buildings in the FMX tenant. The list has no paging, so a large tenant gives a large reply. Open one building by its id.
List the equipment records of the tenant. Open one record by its id to read its details.
List the inventory items of the tenant. Open one item by its id to read its record.
List the resources and the attachment records of the tenant. Open one resource or attachment by its id.
The login page asks for your FMX tenant, API user email and API user password.
Create the API user in FMX under Admin Settings → User Types (an API user type), then Users. Do not use a personal login: the API must be enabled for your tenant.
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": {
"fmx": {
"url": "https://fmx.usefulapi.io/mcp"
}
}
} Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"fmx": {
"type": "http",
"url": "https://fmx.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 FMX tenant, API user email and API user password. 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 user | $9/mo · $90/yr | Unlimited* |
*Pro fair use limit: 10,000 tool calls a month on this server. For more, write to [email protected].
Pro covers this FMX server only. Subscribe with fmx_upgrade (it returns a Stripe Checkout link). Cancel any time with fmx_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running fmx_upgrade before then undoes the cancel. Or write to [email protected].
fmx_list_buildingsfmx_get_buildingfmx_list_equipmentfmx_get_equipmentfmx_list_inventoryfmx_get_inventory_itemfmx_list_resourcesfmx_get_resourcefmx_list_attachmentsfmx_get_attachmentfmx_list_usersfmx_usage_statusfmx_request_featurefmx_upgradefmx_cancel_subscriptionList the buildings and open one. Review equipment records and their details. Look up inventory items. Read resources and attachment records. See what you can do for the details.
No. usefulapi is an independent service. It is not affiliated with or endorsed by FMX. The server calls the FMX API with your own FMX 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 FMX tenant, API user email and API user password. See Before you connect for where to find them.
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 FMX tenant, API user email and API user password. 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 FMX 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 FMX.
All 11 FMX tools are marked read-only.
The Free plan gives 50 tool calls / month. Pro costs $9/mo or $90/yr, with unlimited tool calls (fair use limit: 10,000 tool calls a month), for this FMX server only. Cancel any time: Pro then runs to the end of the paid period. Run fmx_usage_status to see how many calls you used.
Ask the AI to run fmx_upgrade: it returns a Stripe Checkout link. To cancel, run fmx_cancel_subscription. Pro continues to the end of the paid period.
Tell the AI what you wanted to do. It can send the request with fmx_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.