smallinvoice MCP by usefulapi for Grok
io.usefulapi/smallinvoice
Read smallinvoice contacts, invoices, offers, projects and hours; create contacts and invoices.
client:Grok
transport:streamable-http
tools:27
Install smallinvoice MCP by usefulapi in Grok
.mcp.json (in your project root)
{
"mcpServers": {
"smallinvoice": {
"type": "http",
"url": "https://smallinvoice.usefulapi.io/mcp"
}
}
}Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs
What Grok can do once it is connected
- smallinvoice_get_owner
- smallinvoice_list_contacts
- smallinvoice_get_contact
- smallinvoice_list_contact_addresses
- smallinvoice_list_contact_people
- smallinvoice_list_contact_groups
- smallinvoice_list_invoices
- smallinvoice_get_invoice
- smallinvoice_list_invoice_payments
- smallinvoice_list_offers
- smallinvoice_get_offer
- smallinvoice_list_order_confirmations
- smallinvoice_get_order_confirmation
- smallinvoice_list_delivery_notes
- smallinvoice_get_delivery_note
- smallinvoice_list_products
- smallinvoice_list_services
- smallinvoice_list_units
- smallinvoice_list_bank_accounts
- smallinvoice_list_projects
- smallinvoice_get_project
- smallinvoice_list_working_hours
- smallinvoice_list_efforts
- smallinvoice_list_activities