FastBill MCP by usefulapi for Grok
io.usefulapi/fastbill
Read FastBill customers, invoices, estimates, expenses; create customers, invoices, projects.
client:Grok
transport:streamable-http
tools:22
Install FastBill MCP by usefulapi in Grok
.mcp.json (in your project root)
{
"mcpServers": {
"fastbill": {
"type": "http",
"url": "https://fastbill.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
- fastbill_list_customers
- fastbill_get_customer
- fastbill_list_contacts
- fastbill_list_invoices
- fastbill_get_invoice
- fastbill_list_recurring_invoices
- fastbill_list_estimates
- fastbill_list_expenses
- fastbill_list_revenues
- fastbill_list_articles
- fastbill_list_projects
- fastbill_list_time_entries
- fastbill_list_templates
- fastbill_create_customer
- fastbill_update_customer
- fastbill_create_invoice
- fastbill_complete_invoice
- fastbill_set_invoice_paid
- fastbill_create_estimate
- fastbill_create_article
- fastbill_create_project
- fastbill_create_time_entry