io.usefulapi由 usefulapi.io 發布官方發布者v1.12.4更新於 Nov 7, 2026
Read FastBill customers, invoices, estimates, expenses; create customers, invoices, projects.
發布方自己的服務：Ably MCP by usefulapi
託管式 FastBill 連接器，讓助理讀取客戶、發票、報價、支出與專案，並建立或完成帳務記錄。
Web executable，透過 Streamable HTTP。 遠端服務在工作區中設定後即可從網頁執行環境執行。
把這段提示詞貼上到 Claude Code、Codex、Cursor 等代理程式，或 SourceWeft 對話中。代理程式會讀取該伺服器的安裝指南，先向你展示發布者、端點和登入方式，經你同意後再把它新增到你的客戶端。金鑰不會寫進任何命令。
閱讀 https://sourceweft.com/mcp/io.usefulapi%2Ffastbill/install.md，並按其中說明把這個 MCP 伺服器接入我的客戶端。修改任何設定之前，先告訴我它的發布者、端點和登入方式，等我確認。不要把 API 金鑰寫進命令或我會提交的檔案；問我金鑰應從哪裡取得。把它新增到你客戶端的 mcpServers 設定中。
{
"mcpServers": {
"fastbill-by-usefulapi": {
"type": "http",
"url": "https://fastbill.usefulapi.io/mcp"
}
}
}Live endpoint: https://fastbill.usefulapi.io/mcp
https://fastbill.usefulapi.io/mcp.claude mcp add --transport http fastbill https://fastbill.usefulapi.io/mcp, then run /mcp to log in.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, and the login page asks for your FastBill credentials.
Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/fastbill/
On first connect you will paste your FastBill login e-mail and API key. They are validated, stored per-user, and scoped to you. No keys in config files.
read tools are read-only; write tools mutate data (clients should confirm them); meta tools report usage, manage your subscription or send a feature request.
*Pro has a fair use limit of 10,000 tool calls a month on this server. For more, write to [email protected].
Pro covers this server only. Subscribe with fastbill_upgrade (it returns a Stripe Checkout link). Cancel any time with fastbill_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running fastbill_upgrade before then undoes the cancel. Or write to [email protected].
MIT
來源：servers/fastbill/README.md，提交 4046075
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.
citytermlimitoffsetcountry_codecustomer_numberGet customer
One customer by FastBill customer id. customer.get with CUSTOMER_ID.
customer_id必填List contacts
List contact persons of customers (name, position, e-mail, phone). Filter by customer, search term or contact id. contact.get.
termlimitoffsetcontact_idcustomer_idcustomer_numberList 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.
typelimitoffsetend_datestart_datecustomer_idend_due_dateend_paid_dateend_lastupdateinvoice_numberstart_due_datestart_paid_date另有 1 個Get invoice
One invoice by FastBill invoice id, with all line items, VAT, payments and the document URL. invoice.get with INVOICE_ID.
invoice_id必填List recurring invoices
List recurring invoice templates (customer, interval data, totals, items). recurring.get.
limitoffsetinvoice_idList estimates
List estimates (quotes) with state (a created, b sent, c negotiation, d accepted, e rejected, f invoiced), totals and items. estimate.get.
limitoffsetend_datestart_datecustomer_idestimate_idestimate_numberList expenses
List expense entries (supplier, category, net/VAT/gross, dates, document URL). Filter by invoice number or date ranges. expense.get.
limitoffsetend_dateinvoice_idstart_dateend_paid_dateinvoice_numberstart_paid_dateList revenues
List revenue entries (income booked in FastBill: customer, totals, dates, payments). Takes the same filters as invoices. revenue.get.
limitoffsetend_datestart_datecustomer_idend_paid_dateinvoice_numberstart_paid_dateList products
List products and services (article number, type, title, unit price, VAT, unit). article.get.
limitoffsetarticle_idarticle_numberList projects
List projects (name, customer, hourly rate, VAT, start/end date). project.get.
limitoffsetproject_idcustomer_idList 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.
datelimitoffsettime_idend_dateproject_idstart_datecustomer_idList document 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.
limitoffsetCreate 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.
citytagsemailphonemobilevat_idaddresswebsitezipcodepositionaddress_2last_name另有 10 個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.
citytagsemailphonemobilevat_idaddresswebsitezipcodepositionaddress_2last_name另有 11 個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.
items必填is_grossvat_caseintrotextcustomer_id必填template_idinvoice_datecurrency_codedelivery_dateinvoice_titlediscount_percentcash_discount_days另有 5 個Finalize 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.
invoice_id必填Mark invoice paid
WRITE: mark a final invoice as paid, with the payment date and method. invoice.setpaid.
paid_dateinvoice_id必填payment_methodCreate estimate
WRITE: create an estimate (quote) for a customer from line items. It is not sent. estimate.create.
items必填is_grossintrotextcustomer_id必填template_idcurrency_codeestimate_datediscount_percentCreate product
WRITE: create a product or service (article number, title and unit price are required). article.create.
tagstypeunittitle必填is_grossunit_price必填descriptionvat_percentcurrency_codearticle_number必填Create project
WRITE: create a project for a customer (name and customer are required). project.create.
end_datehour_pricestart_datecustomer_id必填vat_percentproject_name必填currency_codeCreate time entry
WRITE: book a work time entry on a project (customer, project and start time are required). time.create.
datecommentminutesend_timearticle_idproject_id必填start_time必填customer_id必填billable_minutes已滿足適用檢查項的 100%
該評分衡量此收錄條目的完整程度，依據註冊中心條目、端點與公開來源計算得出。它不是對伺服器本身的評價，也不表示伺服器安全或目前可用：可連通性是帶日期的檢查結果，評分也不包含安裝量或使用者評價。
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{ "mcpServers": { "fastbill": { "url": "https://fastbill.usefulapi.io/mcp" } }}