Integrate Quaderno with Claude, Cursor, Chatbots & AI Agents MCP Server

Q: Can I draft custom test invoices natively in chat?

Absolutely. You can use createtransaction. Instruct your agent to format a JSON array with products and amounts, linking to a specific contactid. The server submits this array to Quaderno and records the fully realized transaction safely.

Bring automated tax compliance and invoicing directly into your AI workflow — calculate global taxes, issue invoices, and manage CRM contacts in seconds.

GDPR Free for Subscribers

Compatible with every major AI agent and IDE

Claude

ChatGPT

Cursor

Gemini

Windsurf

VS Code

JetBrains

Vercel

+ other MCP clients

calculate

Calculate taxes on Quaderno

Calculates applicable taxes for a potential sale

create

Create contact on Quaderno

Specify email, first name, and last name. Creates a new contact in Quaderno

create

Create transaction on Quaderno

Provide the contact ID and a JSON array of items. Records a new transaction and issues an invoice

delete

Delete contact on Quaderno

This action is irreversible. Deletes a contact from Quaderno

get

Get contact on Quaderno

Retrieves details for a specific contact

get

Get invoice on Quaderno

Retrieves details for a specific invoice

list

List contacts on Quaderno

Lists all contacts (customers) in the Quaderno account

list

List invoices on Quaderno

Lists all issued invoices

list

List transactions on Quaderno

Lists all recorded transactions

update

Update contact on Quaderno

Provide a JSON payload with the changes. Updates an existing contact

Security & Code Integrity Audit

Every tool in the Quaderno MCP Server is continuously audited by the Vinkius Security Engine. We guarantee zero-trust payload isolation, strict data boundaries, and deterministic execution for enterprise-grade AI agents.

A+Score: 100

How Vinkius protects your data

Can I draft custom test invoices natively in chat?

Absolutely. You can use create_transaction. Instruct your agent to format a JSON array with products and amounts, linking to a specific contact_id. The server submits this array to Quaderno and records the fully realized transaction safely.

How does the AI access my passwords and credentials?

It simply doesn't. On Vinkius, your passwords, API keys, and login details are kept in a secure vault. The AI (like ChatGPT or Claude) merely "asks" Vinkius to perform the task. Vinkius opens the door, does the work, and hands the result back to the AI. Your credentials are never seen, read, or learned by the artificial intelligence.

What if the AI ends up reading customer data or confidential information?

We have a built-in digital "bodyguard" called DLP (Data Loss Prevention). If a tool fetches data and the response contains social security numbers, credit cards, or personal customer info, Vinkius magically blocks and erases that information before it is delivered to the AI. The AI works only with what is strictly necessary, and your sensitive data never leaks.

Does the AI train on my tools or API data?

No. Vinkius enforces a strict Zero-Retention policy. Your data simply passes through our secure servers to complete the requested action and is instantly forgotten. Nothing you do here is ever stored, logged, or used to train any artificial intelligence.

Triggering Quaderno via Natural Language

Add the Quaderno tool to your AI Agents. The toolkit allows Claude and ChatGPT to securely fetch and update targeted data.

tax compliance & AI Execution

Use Quaderno to interface with tax compliance via natural language. The toolkit provides Cursor with LLM-friendly schemas for finance accounting tasks.

Connecting invoicing with Cursor

Use Quaderno to interface with invoicing via natural language. The toolkit provides Cursor with LLM-friendly schemas for finance accounting tasks.