get_customer
Get full details for a single customer by ID, including addresses, payment terms, tax info, and notes.
What get_customer does
Fetches a single customer by its ID, returning every field including line items, audit metadata, and timestamps.
This tool is part of InvoiceCave's open MCP server — the most MCP-complete invoicing platform on the market with 102 tools covering invoices, customers, quotes, expenses, payments, recurring schedules, accounting, and reports. Every tool is callable from any MCP-compatible AI client without writing a single line of integration code.
How an AI uses get_customer
Use this after a list_* call when the AI needs full detail on one record — line items, totals, payment status, history. Safe to call repeatedly; it's a read-only fetch with no side effects.
You don't call this tool directly — you ask the AI in plain English and the MCP client decides which tool to invoke based on your request. The example prompts below were lifted from real Claude Desktop sessions, so you can use them verbatim or adapt them to your data.
Parameters
get_customer accepts 1 parameter — 1 required, 0 optional. The AI fills these in from your natural-language prompt; you never write them by hand.
| Parameter | Type | Required | Description |
|---|---|---|---|
| customerId | string | required | Customer ID |
Request example
Under the hood, your AI client sends a JSON-RPC 2.0 tools/call request to InvoiceCave's MCP endpoint at https://www.invoicecave.com/api/mcp/mcp. Here's what a get_customer call looks like:
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "get_customer",
"arguments": {
"customerId": "cus_a1b2c3d4"
}
}
}You won't write this yourself — it's shown so developers can see exactly what the MCP client generates. The arguments object maps 1:1 to the parameters above. Authentication is handled by the Authorization: Bearer header with your API key.
Example AI prompts
Type any of these into Claude Desktop, Claude Code, or Cursor — InvoiceCave's MCP server will route them to get_customer automatically.
“Pull up the full details for that customer.”
“What's the current status of this customer?”
Use it in 30 seconds
Related tools
More from the Customers category.
list_customersList customers in the organization. Optionally search by name or company.
create_customerCreate a new customer. Only displayName is required. Supports billing/shipping addresses, payment terms, and tax info.
edit_customerUpdate an existing customer's details. All fields optional — only provided fields are changed.
delete_customerDelete a customer. Warning: this also removes related data.
generate_customer_portal_linkGenerate (or return existing) public portal link for a customer. Uses Customer.portalToken; creates one if missing.
FAQ — get_customer
What is get_customer?▾
get_customer is one of 102 tools in InvoiceCave's MCP server. Fetches a single customer by its ID, returning every field including line items, audit metadata, and timestamps. It's invoked automatically when an AI client like Claude or Cursor decides the user's request maps to this action.
Which AI clients can call get_customer?▾
Any MCP-compatible client. We've tested it with Claude Desktop, Claude Code, Cursor, Windsurf, and Codex. The MCP protocol is open, so any AI tool that speaks MCP can call this endpoint with a valid InvoiceCave API key.
Is calling get_customer secure?▾
Yes. Every call is authenticated by the API key you mint in the dashboard, scoped to a single organization, rate-limited per key, and recorded in the audit log with source='mcp'. Sensitive fields (SMTP passwords, encryption keys) are never returned to the AI client.
What parameters does get_customer take?▾
get_customer accepts 1 parameter — 1 required (customerId). The AI populates these from your plain-English prompt — see the parameter table and request example above.
Does get_customer count against any quota?▾
MCP tool calls are unmetered on the free plan up to a generous monthly limit. Once you connect Stripe and start charging your customers, every call still counts against the same per-key rate limit but doesn't add to your bill.
Ready to wire this up?
Free plan — no credit card. 102 tools at your AI's disposal.