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Billy (BYOK) icon

Billy (BYOK)

Read your Billy accounting data (invoices, bills, contacts, products, accounts, organization) with your own access token

Unify Dynamics LLC

Tools6read-only
Sign-inBYOKbring your own key
Key keptNeverused for one call only
PriceFreeoptional Pro limits
ProviderBillyunofficial, not affiliated
Works withMCP · RESTany agent

Try asking

Real questions, and the tools your agent calls to answer them.

Which Billy organization is my token connected to?
Tools called
get_organization
Which Billy invoices are unpaid and past due?
Tools called
list_invoices
Which Billy bills are still unpaid?
Tools called
list_bills
Who are my customers in Billy?
Tools called
list_contacts
What products are set up in Billy?
Tools called
list_products
What accounts are in my Billy chart of accounts?
Tools called
list_accounts

About

Billy (BYOK) lets an AI assistant read your own Billy data through the Billy API with a key you supply (Billy access token (one per organization)). Read-only: 6 tools (get_organization, list_invoices, list_bills, list_contacts, list_products, list_accounts). 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 api.billysbilling.com. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by Billy. Billy and its logos are trademarks of their owners and are used only to say which service the connector works with.

Sources: Live from the Billy API (api.billysbilling.com) with a BYOK key; documentation: https://www.billy.dk/api/. Endpoints checked against that documentation on 2026-10-16.

Privacy

The publisher, Unify Dynamics LLC, states that tool inputs are processed in memory and not retained.

Data not collectedNo account, no profile, no stored prompts or results.

What it can do

6 tools, grouped by job. Every one is read-only or compute-only.

OpenAPI
Read your data6 tools
  • Get organizationShow the Billy organization the token belongs to: name, address, registration number, base currency, VAT settings, default tax mode and next…
  • List invoicesList sales invoices with number, contact, entry and due dates, state, amounts, balance, paid flag and download link, filterable by state, paid…
  • List billsList supplier bills with contact name, entry, due and payment dates, state, amounts, balance and paid flag, filterable by state, paid flag,…
  • List contactsList customers and suppliers with name, type, contact number, address, phone, registration number, payment terms and archived flag.
  • List productsList products and services with name, description, product number and archived flag.
  • List accountsList the chart of accounts with name, account number, description, system role and bank details of bank accounts.

Information

PublisherUnify Dynamics LLC
CategoryMoney & business
LanguagesEnglish
Built forWorldwide
CompatibilityAny MCP client · any agent · REST
Version0.1.0
MCP endpointhttps://byok-billy.connectorbay.com/mcp
REST APIopenapi.json
SupportGet help · Status
CountryWorldwide
FunctionOther
LayerDeep connectors

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Get Billy (BYOK)

Free · BYOK · Read-only

BYOK: bring your own keyThis connector uses your own Billy Billy access token (one per organization). Create one at https://www.billy.dk/api/, with the fewest permissions it needs (read-only if the provider offers it). Your assistant sends it in the X-Upstream-Key header with every request. It is used for that one call only: never stored, logged or cached, and only ever sent to Billy. Revoke it at the provider whenever you like. Unofficial connector: not affiliated with Billy.