io.usefulapi/fastbill · v1.0.0 · finance-and-payments
FastBill MCP by usefulapi is healthy: it completed an MCP handshake in 1385 ms and exposes 22 tools.
Read FastBill customers, invoices, estimates, expenses; create customers, invoices, projects.
Endpoint: https://fastbill.usefulapi.io/mcp (streamable-http)
Repository · Website · JSON · Add to my inventory
| Users (last 30 days) | 0 |
| Handshake | Healthy |
| Auth needed | None |
| Tool count | 22 |
| Latency | 1385 ms |
| Last checked (UTC) | 2026-10-26T06:00:18.664Z |
| Checked (UTC) | Status | Latency | Error |
|---|---|---|---|
| 2026-10-26T06:00:18.664Z | Healthy | 1385 | |
| 2026-10-26T06:00:18.400Z | Healthy | 916 |
fastbill_list_customers | List customers (name, address, e-mail, VAT id, payment terms and bank details as stored in FastBill). Filter by search term (organization, name, address, zip, e-mail or tags), customer number, country or city. customer.get. |
fastbill_get_customer | One customer by FastBill customer id. customer.get with CUSTOMER_ID. |
fastbill_list_contacts | List contact persons of customers (name, position, e-mail, phone). Filter by customer, search term or contact id. contact.get. |
fastbill_list_invoices | List outgoing invoices, drafts and credit notes with totals, state (draft, unpaid, overdue, paid, canceled), dates and line items. Filter by customer, number, type, date ranges (invoice date, due date, paid date, last update). invoice.get. |
fastbill_get_invoice | One invoice by FastBill invoice id, with all line items, VAT, payments and the document URL. invoice.get with INVOICE_ID. |
fastbill_list_recurring_invoices | List recurring invoice templates (customer, interval data, totals, items). recurring.get. |
fastbill_list_estimates | List estimates (quotes) with state (a created, b sent, c negotiation, d accepted, e rejected, f invoiced), totals and items. estimate.get. |
fastbill_list_expenses | List expense entries (supplier, category, net/VAT/gross, dates, document URL). Filter by invoice number or date ranges. expense.get. |
fastbill_list_revenues | List revenue entries (income booked in FastBill: customer, totals, dates, payments). Takes the same filters as invoices. revenue.get. |
fastbill_list_articles | List products and services (article number, type, title, unit price, VAT, unit). article.get. |
fastbill_list_projects | List projects (name, customer, hourly rate, VAT, start/end date). project.get. |
fastbill_list_time_entries | List work time entries (customer, project, date, minutes, billable minutes, comment, invoice). Without filters FastBill returns the latest entries of the current month. time.get. |
fastbill_list_templates | List the invoice/estimate templates (template id, name, hash). Use a template id with the create tools. Ids change whenever a template is edited. template.get. |
fastbill_create_customer | WRITE: create a customer. customer_type is required; a business needs organization, a consumer needs last_name. Bank details are not accepted by this tool. FastBill does not check for duplicates, so search with fastbill_list_customers first. customer.create. |
fastbill_update_customer | WRITE: update fields of an existing customer; only the fields you pass change. Bank details are not accepted by this tool. customer.update. |
fastbill_create_invoice | WRITE: create an invoice for a customer from line items. FastBill stores it as a draft; it gets its number and becomes final only with fastbill_complete_invoice, and it is never sent by this tool. Check the result with fastbill_get_invoice. invoice.create. |
fastbill_complete_invoice | WRITE, NOT REVERSIBLE: turn a draft invoice into a final invoice. FastBill assigns the invoice number and PDF; a final invoice can no longer be edited (it can only be canceled in FastBill). Nothing is sent to the customer. Only call this after the user confirmed the draft. invoice.complete. |
fastbill_set_invoice_paid | WRITE: mark a final invoice as paid, with the payment date and method. invoice.setpaid. |
fastbill_create_estimate | WRITE: create an estimate (quote) for a customer from line items. It is not sent. estimate.create. |
fastbill_create_article | WRITE: create a product or service (article number, title and unit price are required). article.create. |
fastbill_create_project | WRITE: create a project for a customer (name and customer are required). project.create. |
fastbill_create_time_entry | WRITE: book a work time entry on a project (customer, project and start time are required). time.create. |