Quaderno (BYOK)

Quaderno (BYOK) — connector documentation

• MCP endpoint: https://byok-quaderno.connectorbay.com/mcp
• REST API: POST https://byok-quaderno.connectorbay.com/v1/tools/{tool_name}, described by the OpenAPI 3.1 spec at https://byok-quaderno.connectorbay.com/openapi.json
• Transport: Streamable HTTP, stateless, MCP specification 2025-06-18 or later
• Authentication: your own Quaderno Quaderno API key (private key), sent in the X-Upstream-Key header of every request (never stored, logged or cached)
• Health: https://byok-quaderno.connectorbay.com/health · Tool schemas: https://byok-quaderno.connectorbay.com/tools.json
• Publisher: Unify Dynamics LLC · connectorbay.com/byok-quaderno · agent@connectorbay.com

What Quaderno (BYOK) is for

Quaderno (BYOK) lets an AI assistant read your own Quaderno data through the Quaderno API with a key you supply (Quaderno API key (private key)). Read-only: 12 tools (list_invoices, get_invoice, list_credit_notes, list_receipts, list_expenses, list_recurring_documents, list_contacts, get_contact, list_products, list_tax_codes, list_jurisdictions, ping). The BYOK key travels with each request, is used for that one call only and is never stored, logged or cached; it is only ever sent to *.quadernoapp.com. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by Quaderno. Quaderno and its logos are trademarks of their owners and are used only to say which service the connector works with.

Ask your assistant things like:

• "Which Quaderno invoices are late?"
• "Show Quaderno invoice 1234"
• "Which credit notes did I issue this year in Quaderno?"
• "What Quaderno receipts were issued in September?"
• "What expenses did I record in Quaderno last quarter?"
• "Which recurring invoices are active in Quaderno?"

What it does

• list_invoices: List invoices newest first with number, dates, currency, state, totals in cents and customer. Filter by search text, issue date range, state or contact. Page with created_before.
• get_invoice: Get one invoice by ID with number, dates, currency, state, totals in cents, customer, line items and taxes.
• list_credit_notes: List credit notes newest first with number, dates, currency, state, totals in cents and customer.
• list_receipts: List sales receipts newest first with number, dates, currency, totals in cents and customer.
• list_expenses: List expenses newest first with issue date, currency, state, totals in cents, supplier contact and tags.
• list_recurring_documents: List recurring invoice schedules with frequency, start and end dates, totals and customer.
• list_contacts: List customers and suppliers with name, email, country, tax ID and kind. Search by name or email, or by payment processor ID.
• get_contact: Get one contact by ID with address, tax ID and tax status.
• list_products: List products with code, name, type, price, currency and tax class.
• list_tax_codes: List Quaderno tax codes (standard, reduced, ebook, saas and others) with names and descriptions.
• list_jurisdictions: List tax jurisdictions, optionally for one country or region.
• ping: Check that the API key works and show the API status.

BYOK key

You bring your own Quaderno Quaderno API key (private key) (https://quadernoapp.com/users/api-keys). Your assistant sends it in the X-Upstream-Key header with each request. ConnectorBay uses it for that one call only: it is never stored, logged or cached, never shown in an answer, and it is only sent to *.quadernoapp.com over https, with no redirects followed. Create a key with the fewest permissions the tools need (read-only if the provider offers it), and revoke it at the provider whenever you like.

Data sources

• https://developers.quaderno.io/api/ (the API this connector calls, with a BYOK key)

Live from the Quaderno API (*.quadernoapp.com) with a BYOK key; documentation: https://developers.quaderno.io/api/. Endpoints checked against that documentation on 2026-10-16.

What it is not

Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by Quaderno. Quaderno and its logos are trademarks of their owners and are used only to say which service the connector works with. It is read-only: it never creates, changes, sends or deletes anything in your Quaderno account.

Built for: Worldwide. Languages: English.

Quaderno (BYOK) — Privacy Policy

Effective 24 October 2026. Unify Dynamics LLC ("we", "us"), Menlo Park, California.

What Quaderno (BYOK) is. Quaderno (BYOK) is a connector (an MCP server and REST API) that an AI assistant calls on your behalf to read your own Quaderno data: Read your Quaderno invoices, credit notes, receipts, expenses, recurring documents, contacts, products and tax codes with your own API key. You bring your own Quaderno Quaderno API key (private key); the assistant sends it to us with each request.

BYOK key. The key you supply is used to make the one Quaderno call you asked for. Our application does not store it, write it to a log, put it in a cache, or share it. It is sent only to *.quadernoapp.com, over https, and is removed from any text we return to you or your assistant. We do not follow redirects with your key. If Quaderno rejects it, we say so without repeating it.

What we receive. The arguments of each tool call, the BYOK key (for that call only), the technical headers needed to serve the request (an IP address or a client identifier supplied by the assistant) and standard server logs. What Quaderno receives. The request we make on your behalf, including the key and the arguments, under Quaderno's own terms and privacy policy. Quaderno acts at your direction and is the only recipient of the data of your request besides our hosting provider.

What we return. The answer Quaderno gives for your request, trimmed to the fields the tool documents. We do not keep it: it is returned to your assistant and not stored, cached or used to train anything.

What we do not do. We do not build a profile, sell or share personal information, or keep your Quaderno data. Rate-limit counters (a client identifier and timestamps) are held in memory for at most 24 hours. Hosting access logs (IP addresses, request paths and status codes) are kept for up to 30 days for security and abuse prevention; our application adds no request headers or bodies to them.

Sub-processors. Quaderno (the API you call with a BYOK key, at your direction). Hosting: Vercel (United States regions).

Your rights. Because we store no personal data beyond short-lived logs, requests to access, correct or delete data are usually satisfied automatically; you can still contact agent@connectorbay.com and we will respond within 30 days. Revoke your key at Quaderno at any time to end all access.

Children. Quaderno (BYOK) is a general-audience service operated by the adult using the assistant, under Quaderno's own age rules.

Changes. We will post changes here with a new effective date.

Quaderno (BYOK) — Terms of Service

Effective 24 October 2026. These terms govern use of the Quaderno (BYOK) connector ("the Service") operated by Unify Dynamics LLC ("we", "us").

1. The Service. Quaderno (BYOK) provides: Read your Quaderno invoices, credit notes, receipts, expenses, recurring documents, contacts, products and tax codes with your own API key. It is accessed through an AI assistant or directly over MCP or HTTP, and is read-only.
2. Your own key, your own account. You must use your own Quaderno credentials and only access data you are allowed to access. Quaderno's terms apply to your use of Quaderno; you are responsible for complying with them, including any rate limits and permitted uses. Do not share a key you do not own.
3. Independent. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by Quaderno. Quaderno and its logos are trademarks of their owners and are used only to say which service the connector works with.
4. No advice, no guarantees. Output is the data Quaderno returns, lightly trimmed; it may be incomplete, delayed or changed by Quaderno. Check important facts at the source.
5. Read-only. The Service does not create, change, send or delete anything in your Quaderno account.
6. Acceptable use. Automated use within the published rate limits is welcome. Do not use the Service to access data you are not entitled to, to circumvent Quaderno's controls, or to attack any system.
7. Availability. The Service is provided "as is" without warranty. We may change, limit or discontinue it at any time; Quaderno may change or end its API at any time.
8. Data. Our Privacy Policy describes what we process. In short: the BYOK key is used for the one call and not stored or logged.
9. Pro keys. Optional ConnectorBay Pro API keys are issued at our discretion and are separate from your Quaderno key.
10. Liability. To the fullest extent permitted by law, Unify Dynamics LLC is not liable for any loss arising from use of or reliance on the Service, including any action Quaderno takes on your account. Our total liability is limited to US $100.
11. Governing law. California law; venue in San Mateo County, California.
12. Contact. Unify Dynamics LLC · agent@connectorbay.com · https://connectorbay.com/byok-quaderno

Quaderno (BYOK) support

Email agent@connectorbay.com. We answer within two business days.

• MCP endpoint: https://byok-quaderno.connectorbay.com/mcp
• REST API: https://byok-quaderno.connectorbay.com/openapi.json
• Live status: https://byok-quaderno.connectorbay.com/health

When you report a problem, include the question you asked your agent, roughly when, and which agent you used (for example Claude, ChatGPT or Gemini). Never send us passwords, account numbers or ID numbers. Quaderno (BYOK) never asks for them.