Read Service Fusion customers, jobs, estimates, invoices and schedule; create customers and jobs. Hosted by usefulapi — connect from Claude, ChatGPT, Cursor, or any MCP client.
Team and Enterprise: an Owner adds the connector for the organization first.
Run this command, then run /mcp in Claude Code to log in:
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"service-fusion": {
"url": "https://service-fusion.usefulapi.io/mcp"
}
}
}Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"service-fusion": {
"type": "http",
"url": "https://service-fusion.usefulapi.io/mcp"
}
}
}No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.
Run these commands. The second one opens the login page:
Other MCP clients (Windsurf, Cline, Zed and more): add the URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser. Do not add an Authorization header: see Before you connect.
The login page asks for your Client ID and Client Secret.
In Service Fusion open Admin → Developer Settings → API Credentials (OAuth Consumer) and copy the Client ID and Client Secret. API access is included with the PRO plan; on other plans ask Service Fusion support to enable it. The credentials act with your user's permissions and are used only to call the Service Fusion API on your behalf.
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 Client ID and Client Secret. 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.
Turn on the Service Fusion connector, then ask in plain words. The AI picks the tools.
| Tool | Type | What it does |
|---|---|---|
servicefusion_get_me | read | Get current user The Service Fusion user the API credentials belong to: id, name and email. Use it to check the connection. GET /me. |
servicefusion_list_customers | read | List customers List customers (newest id order unless sorted). Filter by name, contact, address, city, postal code, phone, email, tags or last-serviced date. Add expand=contacts,locations,custom_fields to include them. GET /customers. |
servicefusion_get_customer | read | Get customer One customer by id, optionally with contacts, phones, emails, locations and custom fields. GET /customers/{id}. |
servicefusion_list_customer_equipment | read | List customer equipment List the equipment on file for a customer (type, make, model, serial number, warranty and install dates). GET /customers/{id}/equipment. |
servicefusion_get_customer_equipment | read | Get customer equipment One piece of equipment of a customer. GET /customers/{customer_id}/equipment/{equipment_id}. |
servicefusion_list_jobs | read | List jobs List jobs (work orders). Filter by status, number, PO or invoice number, customer, contact, address, phone, email, category, source and start/end/updated/closed dates. Add expand (techs_assigned, services, products, payments, invoices, visits, notes, ...) for detail. GET /jobs. |
servicefusion_get_job | read | Get job One job by id, optionally with technicians, line items, labor, expenses, payments, invoices, notes, visits and more. GET /jobs/{id}. |
servicefusion_list_estimates | read | List estimates List estimates (quotes). Filter by status, number, PO number, customer, contact, address, phone, email, category, source and start/end/requested dates. GET /estimates. |
servicefusion_get_estimate | read | Get estimate One estimate by id, optionally with line items, technicians, notes, tags and more. GET /estimates/{id}. |
servicefusion_list_invoices | read | List invoices List invoices with number, total, paid flag, dates and the customer. The API has no invoice filters: sort and page instead (for example sort=-date). GET /invoices. |
servicefusion_get_invoice | read | Get invoice One invoice by id. GET /invoices/{id}. |
servicefusion_list_calendar_tasks | read | List calendar tasks List calendar tasks (appointments and to-dos on the schedule) for one day (start_date or end_date alone), a date range (both) and/or given users. A task is returned when it overlaps the range. GET /calendar-tasks. |
servicefusion_get_calendar_task | read | Get calendar task One calendar task by id. GET /calendar-tasks/{id}. |
servicefusion_get_availability | read | Get technician availability Open time slots for technicians and/or crews over up to 8 days (end_date at most 7 days after start_date). Filter by technician, crew, department, experience level and slot length. GET /availability. |
servicefusion_list_techs | read | List technicians List technicians and sales reps (name, contact details, department, title, color, field-worker and sales-rep flags). GET /techs. |
servicefusion_get_tech | read | Get technician One technician by id. GET /techs/{id}. |
servicefusion_list_tech_departments | read | List technician departments The technician department names configured in the account (useful for availability filters). GET /techs/departments. |
servicefusion_list_crews | read | List crews List crews (named groups of technicians), optionally with their members. GET /crews. |
servicefusion_get_crew | read | Get crew One crew by id, optionally with its technicians. GET /crews/{id}. |
servicefusion_list_job_categories | read | List job categories The job category names to use when creating or filtering jobs. GET /job-categories. |
servicefusion_list_job_statuses | read | List job statuses The job status names (code, name, custom flag, category) to use when creating or filtering jobs. GET /job-statuses. |
servicefusion_list_payment_types | read | List payment types The payment types configured in the account. GET /payment-types. |
servicefusion_list_sources | read | List lead sources The lead/referral sources (short and long names) to use when creating or filtering jobs and estimates. GET /sources. |
servicefusion_create_customer | write | Create customer WRITE: create a customer in Service Fusion, optionally with contacts (phones, emails) and service locations. It is visible to the whole team and cannot be deleted through this API; creating the same name twice makes two customers, so search with servicefusion_list_customers first. POST /customers. |
servicefusion_create_job | write | Create job WRITE: create a job (work order) for a customer, optionally with address, category, source, assigned technicians, tasks, notes, products, services and other charges. It appears on the team's schedule and cannot be deleted through this API; creating twice makes two jobs. Look up category, source and status names with the list tools first. POST /jobs. |
servicefusion_create_estimate | write | Create estimate WRITE: create an estimate (quote) for a customer, optionally with address, category, source, technicians, tasks, notes, products, services, other charges and tags. It cannot be deleted through this API; creating twice makes two estimates. POST /estimates. |
servicefusion_usage_status | Usage status (free-tier meter) Report the caller's current free-tier usage this month: calls used, monthly limit, remaining, and whether the cap is reached. Read-only; does not count against the meter. | |
servicefusion_request_feature | Request a missing feature Tell usefulapi that the user needs something the Service Fusion tools cannot do yet (a missing tool, field or filter). Call it only when the user asks for something none of the tools can do, and tell the user that you send the request. Do not call it for errors or for normal requests. Do not include personal data, credentials or customer records. Stored with the product name and the client type (for example Claude or Cursor), without the user's account. At most 5 requests per day. Does not count against the meter. | |
servicefusion_upgrade | Upgrade to Pro (unlimited) Subscribe to the Pro plan for UNLIMITED Service Fusion tool calls (the free tier caps monthly usage). Choose monthly ($9/month) or yearly ($90/year — 2 months free) billing. Returns a short link to open in your browser (it opens Stripe Checkout); after payment your account upgrades automatically. Does not count against the meter. | |
servicefusion_cancel_subscription | Cancel the Pro subscription Cancel the caller's Service Fusion Pro subscription at the end of the paid period (no refund for the current period; unlimited calls continue until then, then the free tier applies). Requires confirm: true. Run servicefusion_upgrade later to undo the cancel before the period ends. Does not count against the meter. |
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Proper user | $9/mo · $90/yr | Unlimited |
Pro covers this Service Fusion server only. Subscribe with servicefusion_upgrade (it returns a Stripe Checkout link). Cancel any time with servicefusion_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running servicefusion_upgrade before then undoes the cancel. Or write to [email protected].
No. usefulapi is an independent service. It is not affiliated with or endorsed by Service Fusion. The server calls the Service Fusion API with your own Service Fusion 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 Client ID and Client Secret. 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 Client ID and Client Secret. 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 Service Fusion 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 Service Fusion.
Yes, if you approve it. 3 of the 26 Service Fusion tools can create or change data. The other 23 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 unlimited tool calls, for this Service Fusion server only. Run servicefusion_usage_status to see how many calls you used.
Ask the AI to run servicefusion_upgrade: it returns a Stripe Checkout link. To cancel, run servicefusion_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 servicefusion_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.