smallinvoice MCP by usefulapi MCP Tools
smallinvoice MCP by usefulapi exposes 27 tools. Each one has its own page with the configuration for every client that can run this server.
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smallinvoice_get_ownersmallinvoice get owner
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smallinvoice_list_contactssmallinvoice list contacts
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smallinvoice_get_contactsmallinvoice get contact
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smallinvoice_list_contact_addressessmallinvoice list contact addresses
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smallinvoice_list_contact_peoplesmallinvoice list contact people
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smallinvoice_list_contact_groupssmallinvoice list contact groups
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smallinvoice_list_invoicessmallinvoice list invoices
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smallinvoice_get_invoicesmallinvoice get invoice
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smallinvoice_list_invoice_paymentssmallinvoice list invoice payments
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smallinvoice_list_offerssmallinvoice list offers
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smallinvoice_get_offersmallinvoice get offer
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smallinvoice_list_order_confirmationssmallinvoice list order confirmations
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smallinvoice_get_order_confirmationsmallinvoice get order confirmation
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smallinvoice_list_delivery_notessmallinvoice list delivery notes
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smallinvoice_get_delivery_notesmallinvoice get delivery note
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smallinvoice_list_productssmallinvoice list products
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smallinvoice_list_servicessmallinvoice list services
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smallinvoice_list_unitssmallinvoice list units
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smallinvoice_list_bank_accountssmallinvoice list bank accounts
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smallinvoice_list_projectssmallinvoice list projects
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smallinvoice_get_projectsmallinvoice get project
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smallinvoice_list_working_hourssmallinvoice list working hours
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smallinvoice_list_effortssmallinvoice list efforts
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smallinvoice_list_activitiessmallinvoice list activities
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smallinvoice_list_cost_unitssmallinvoice list cost units
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smallinvoice_create_contactsmallinvoice create contact
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smallinvoice_create_invoicesmallinvoice create invoice
This list was read from the server itself, by connecting to it and calling tools/list on 25 October 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.