Look up individual contacts, projects, opportunities and schedules. Hosted by usefulapi: connect it to Claude, ChatGPT, Cursor or any MCP client.
Turn on the ConstructionOnline connector, then ask in plain words. The AI picks the tools.
For construction teams who look up known contacts, projects, opportunities and schedules in ConstructionOnline.
Look up an individual contact using a known email address or phone number, or retrieve it directly when you have its ID.
Use a project ID to review its status and address before a project discussion.
Open a schedule by its known ID to review its dates and associated project.
Retrieve selected operational fields for an opportunity using its known ID before discussing it with the team.
The login page asks for your ConstructionOnline login email, ConstructionOnline password, Company API key and Known accessible contact ID.
Your company needs Business or Enterprise and enabled API access, requested from [email protected]. Use a dedicated account with only the permissions needed when available. Enter the ID of any contact you can access to verify the connection; your login email need not be a CRM contact. Requested records pass through UsefulAPI to your chosen AI client and model provider. Revoke API access or change the password to stop access. Billing identity uses your login email and company API key; replacing the key or email starts another identity. Contact selection does not change billing 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": {
"constructiononline": {
"url": "https://constructiononline.usefulapi.io/mcp"
}
}
} Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"constructiononline": {
"type": "http",
"url": "https://constructiononline.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 ConstructionOnline login email, ConstructionOnline password, Company API key and Known accessible contact ID. 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 login email and company API key | $9/mo · $90/yr | 10,000 tool calls / month |
| Pro+per login email and company API key | $39/mo · $390/yr | 100,000 tool calls / month |
Each paid plan covers this ConstructionOnline server only. Ask your AI to run constructiononline_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 constructiononline_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 constructiononline_upgrade before then undoes the cancel. Or write to [email protected].
constructiononline_get_contactconstructiononline_get_contact_by_emailconstructiononline_get_contact_by_phoneconstructiononline_get_projectconstructiononline_get_opportunityconstructiononline_get_scheduleconstructiononline_usage_statusconstructiononline_request_featureconstructiononline_upgradeconstructiononline_cancel_subscriptionFind a contact from an email or phone number. Review a known project. Check a schedule’s dates and project. Look up an individual opportunity. See what you can do for the details.
No. usefulapi is an independent service. It is not affiliated with or endorsed by ConstructionOnline. The server calls the ConstructionOnline API with your own ConstructionOnline 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 ConstructionOnline login email, ConstructionOnline password, Company API key and Known accessible contact ID. 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 ConstructionOnline login email, ConstructionOnline password, Company API key and Known accessible contact ID. 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 ConstructionOnline 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 ConstructionOnline.
All 6 ConstructionOnline tools are marked read-only.
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 ConstructionOnline server only. Cancel any time: your paid plan then runs to the end of the paid period. Run constructiononline_usage_status to see how many calls you used.
Ask the AI to run constructiononline_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 constructiononline_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 constructiononline_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.