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# SnelStart MCP tools

> The SnelStart MCP tools on the Cotlet server: every operation with its input schema, a tools/call example and an example result.

Source: https://cotlet.dev/docs/mcp/snelstart

Docs sections: [Get started](https://cotlet.dev/docs.md) · [REST API](https://cotlet.dev/docs/api.md) · [MCP](https://cotlet.dev/docs/mcp.md) · [SDKs & CLI](https://cotlet.dev/docs/sdks.md) · [Integrations](https://cotlet.dev/docs/integrations.md)

SnelStart has 14 operations on the Cotlet MCP server, in snelstart_read and snelstart_write. Your agent picks one in `operation`; the tool carries each operation's input schema. Open an operation for its schema and an example call.

- MCP server: `https://cotlet.dev/mcp/v1`
- MCP tools: `snelstart_read`, `snelstart_write`
- Connects with: Your own SnelStart Web login (web.snelstart.nl); the package you have decides which tools work, for example inStap or higher for sales invoices and customers
- Integration page: https://cotlet.dev/integrations/snelstart-api-mcp-server

## Read

Return data and change nothing in the account.

| Operation | Description |
|---|---|
| [`list_customers`](https://cotlet.dev/docs/mcp/snelstart/list_customers.md) | Lists customers (Relaties, Klanten) with name, VAT number and email address. |
| [`search_articles`](https://cotlet.dev/docs/mcp/snelstart/search_articles.md) | Finds articles by name so an invoice line can use them. |
| [`list_sales_invoices`](https://cotlet.dev/docs/mcp/snelstart/list_sales_invoices.md) | Lists sales invoices from the invoice overview, filtered by status. |
| [`get_sales_invoice`](https://cotlet.dev/docs/mcp/snelstart/get_sales_invoice.md) | Returns one sales invoice with its lines, VAT mode and customer email. |
| [`list_purchases`](https://cotlet.dev/docs/mcp/snelstart/list_purchases.md) | Lists purchase invoices and receipts from Inkopen, optionally only unprocessed ones. |
| [`list_ledger_accounts`](https://cotlet.dev/docs/mcp/snelstart/list_ledger_accounts.md) | Lists ledger accounts (grootboekrekeningen) with code and name. |

## Write

Change the account. Calls marked Confirm wait for the user to approve them.

| Operation | Description |
|---|---|
| [`create_customer`](https://cotlet.dev/docs/mcp/snelstart/create_customer.md) | Adds a customer under Relaties, Klanten. |
| [`create_sales_invoice`](https://cotlet.dev/docs/mcp/snelstart/create_sales_invoice.md) | Saves a sales invoice as a concept, without sending it. |
| [`issue_sales_invoice`](https://cotlet.dev/docs/mcp/snelstart/issue_sales_invoice.md) (Confirm) | Emails a concept invoice to the customer or saves it without sending. |
| [`create_credit_invoice`](https://cotlet.dev/docs/mcp/snelstart/create_credit_invoice.md) (Confirm) | Credits a sales invoice in full or in part, as Crediteren does. |
| [`send_invoice_reminder`](https://cotlet.dev/docs/mcp/snelstart/send_invoice_reminder.md) (Confirm) | Emails the customer that an invoice is still open and attaches the invoice again. |
| [`register_payment`](https://cotlet.dev/docs/mcp/snelstart/register_payment.md) (Confirm) | Registers a purchase or sales invoice as paid in a bank or cash journal. |
| [`upload_purchase_document`](https://cotlet.dev/docs/mcp/snelstart/upload_purchase_document.md) | Uploads one PDF, UBL, PNG or JPG file to Inkopen for SnelStart to read. |
| [`create_memorial_entry`](https://cotlet.dev/docs/mcp/snelstart/create_memorial_entry.md) (Confirm) | Books a memorial entry (memoriaalboeking) with debit and credit lines. |

---

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## For AI agents: sign your user up

Is your user asking you to sign them up for Cotlet? You can do it for them, no account or key needed.

1. Read the fields and their allowed values: GET https://cotlet.dev/api/v1/access-requests
2. Ask the user for each value: email, apps, what you will do with them. If they leave the password to you, generate a strong one and show it to them.
3. Show the user what you will send, then POST it as JSON to https://cotlet.dev/api/v1/access-requests.

One call creates the account and sends the access request; we email the user when access is granted.