Bring Tax Compliance
to OpenAI Agents SDK
Create your Vinkius account to connect Quaderno to OpenAI Agents SDK and start using all 10 AI tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code. No hosting, no server setup — just connect and start using.
GDPR Free for SubscribersCompatible with every major AI agent and IDE
Gemini
What is the Quaderno MCP Server?
Connect your Quaderno account to any AI agent and bring powerful tax compliance, invoicing, and customer management capabilities directly into your automated workflows.
What you can do
- Tax Calculations on the Fly — Instantly determine the accurate sales tax, VAT, or GST based on the customer's region and amount before finalizing sales logic
- Invoice Management — Search and retrieve generated invoices, audit billing records, and verify transactions perfectly formatted via intelligent prompts
- Generate Transactions — Transact and issue invoices seamlessly by sending a simple JSON array of itemized products and line item prices
- Full Contact CRM — Map your users fully by creating, modifying, retrieving, and safely deleting user contacts and billing profiles natively
How it works
- Subscribe to this server
- Authorize using your Quaderno Account API URL and unique API Key
- Start querying customer billing and global taxes from Claude, Cursor, or any MCP-compatible wrapper
Who is this for?
- E-Commerce Founders — prompt your AI to check what taxes apply to a specific customer base during a new global promotion launch
- Finance Engineers — instantly look up invoices by contact ID while coding billing webhooks, avoiding dashboard fatigue
- Client Success Managers — edit a mispelled client billing address rapidly mid-conversation before generating a new transaction record
Built-in capabilities (10)
Calculates applicable taxes for a potential sale
Specify email, first name, and last name. Creates a new contact in Quaderno
Provide the contact ID and a JSON array of items. Records a new transaction and issues an invoice
This action is irreversible. Deletes a contact from Quaderno
Retrieves details for a specific contact
Retrieves details for a specific invoice
Lists all contacts (customers) in the Quaderno account
Lists all issued invoices
Lists all recorded transactions
Provide a JSON payload with the changes. Updates an existing contact
Why OpenAI Agents SDK?
The OpenAI Agents SDK auto-discovers all 10 tools from Quaderno through native MCP integration. Build agents with built-in guardrails, tracing, and handoff patterns. chain multiple agents where one queries Quaderno, another analyzes results, and a third generates reports, all orchestrated through Vinkius.
- —
Native MCP integration via
MCPServerSse, pass the URL and the SDK auto-discovers all tools with full type safety - —
Built-in guardrails, tracing, and handoff patterns let you build production-grade agents without reinventing safety infrastructure
- —
Lightweight and composable: chain multiple agents and MCP servers in a single pipeline with minimal boilerplate
- —
First-party OpenAI support ensures optimal compatibility with GPT models for tool calling and structured output
Quaderno in OpenAI Agents SDK
Why run Quaderno with Vinkius?
The Quaderno connection runs on our fully managed, secure cloud infrastructure. We handle the hosting, maintenance, and security so you don't have to deal with servers or code. All 10 tools are ready to work instantly without any complex setup.
You stay in complete control of your data. Your AI only accesses the information you approve, keeping your sensitive passwords and private details completely safe. Plus, with automatic optimizations, your AI works faster and more efficiently.
* Every connection is hosted and maintained by Vinkius. We handle the security, updates, and infrastructure so you don't have to write code or manage servers. See our infrastructure
Over 4,000 integrations ready for AI agents
Explore a vast library of pre-built integrations, optimized and ready to deploy.
Connect securely in under 30 seconds
Generate tokens to authenticate and link external services in a single step.
Complete visibility into every agent action
Audit live requests, latency, success rates, and active security compliance policies.
Optimize spending and track token ROI
Analyze real-time token consumption and cost metrics detailed by connection.
Explore our live AI Agents Analytics dashboard to see it all working
This dashboard is included when you connect Quaderno using Vinkius. You will never be left in the dark about what your AI agents are doing with your tools.
Quaderno and 4,000+ other AI tools. No hosting, no code, ready to use.
Professionals who connect Quaderno to OpenAI Agents SDK through Vinkius don't need to write code, manage servers, or worry about security. Everything is pre-configured, secure, and runs automatically in the background.
Raw MCP | Vinkius | |
|---|---|---|
| Ready-to-use MCPs | Find and configure each manually | 4,000+ MCPs ready to use |
| Connection Setup | Manual coding & server setup | 1-click instant connection |
| Server Hosting | You host it yourself (needs 24/7 uptime) | 100% hosted & managed by Vinkius |
| Security & Privacy | Stored in plaintext config files | Bank-grade encrypted vault |
| Activity Visibility | Blind execution (no logs or tracking) | Live dashboard with real-time logs |
| Cost Control | Runaway AI token spend risk | Automatic budget limits |
| Revoking Access | Must delete files or code to stop | 1-click disconnect button |
How Vinkius secures
Quaderno for OpenAI Agents SDK
Every request between OpenAI Agents SDK and Quaderno is protected by our secure gateway. We automatically keep your sensitive data private, prevent unauthorized access, and let you disconnect instantly at any time.
Frequently asked questions
Where do I find my Quaderno API Key and URL?
Log in to your Quaderno account. Your API URL is simply your domain up top in the browser bar (e.g., https://mycompany.quadernoapp.com). To get the API Key, navigate to Settings > API Keys (or Developers), and copy your private key. Do not share this key as it carries full access. Paste both credentials below.
Can it calculate exact taxes dynamically before a sale?
Yes! Use the calculate_taxes tool and just provide the AI with a country code, postal code, and base amount. Quaderno's world-class engine evaluates real-time location-based tax nuances (VAT, GST) and returns the exact fraction needed.
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.
Will deleting a contact via the AI remove them permanently?
Yes. The delete_contact operation relies heavily on standard destructive API instructions. Running this means the contact is gone entirely from the Quaderno dashboard. Always review deletion queries cautiously before approving execution.
How does the OpenAI Agents SDK connect to MCP?
Use MCPServerSse(url=...) to create a server connection. The SDK auto-discovers all tools and makes them available to your agent with full type information.
Can I use multiple MCP servers in one agent?
Yes. Pass a list of MCPServerSse instances to the agent constructor. The agent can use tools from all connected servers within a single run.
Does the SDK support streaming responses?
Yes. The SDK supports SSE and Streamable HTTP transports, both of which work natively with Vinkius.
MCPServerStreamableHttp not found
Ensure you have the latest version: pip install --upgrade openai-agents
Agent not calling tools
Make sure your prompt explicitly references the task the tools can help with.
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