# Billabex integrations: contacts and invoices > Add a contact, create an invoice and create a credit note in Billabex. Connect Billabex to the rest of your finance stack with Tray.ai. **Canonical page:** https://tray.ai/connectors/billabex-integrations/ **Categories:** Finance **Connects through:** HTTP Connector ## Overview Billabex is accounts receivable software from France that chases overdue invoices with an AI agent, tracking customer replies, payment promises and follow-up tasks. Tray.ai connects to Billabex through the HTTP Connector, so your workflows can call the Billabex API alongside the rest of your stack. ## Use cases ### Accounts Read, create, update, and delete accounts in Billabex from any Tray.ai workflow. The Billabex API covers calls such as list accounts and get an account. - List accounts - Get an account - Create an account ### Contacts Read, create, update, and delete contacts in Billabex from any Tray.ai workflow. The Billabex API covers calls such as list contacts and add a contact. - List contacts - Add a contact - Update a contact ### Invoices Read, create, update, and delete invoices in Billabex from any Tray.ai workflow. The Billabex API covers calls such as list invoices and get an invoice. - List invoices - Get an invoice - Create an invoice ### Credit notes Read, create, and delete credit notes in Billabex from any Tray.ai workflow. The Billabex API covers calls such as list credit notes and create a credit note. - List credit notes - Create a credit note - Delete a credit note ### Dunning Read and update dunning in Billabex from any Tray.ai workflow. The Billabex API covers calls such as get an account's dunning status and pause dunning for an account. - Get an account's dunning status - Pause dunning for an account - Resume dunning for an account ### Account tasks Read, update, and delete account tasks in Billabex from any Tray.ai workflow. The Billabex API covers calls such as list account tasks and search account tasks. - List account tasks - Search account tasks - Close an account task ## Challenges Tray.ai solves ### Keeping Billabex credentials out of logs A raw API call usually means pasting a key or token into the request, where it ends up in step inputs, logs, and screenshots. **How Tray.ai helps:** Store Billabex credentials once as a Tray.ai authentication and reference them from the HTTP Connector. Tray.ai masks authentication values in logs, so the secret never shows up in a step's input or output. ### Going from the Billabex API docs to a working call Translating an example request from API docs into a workflow step means copying the method, URL, headers, and body by hand. **How Tray.ai helps:** Paste a cURL example from the Billabex API docs into the HTTP Connector and Tray.ai fills in the method, URL, headers, and body for you. ### Handling files and non-JSON responses Not every API answers in JSON. Some return XML, files, or binary data, or expect a multipart upload. **How Tray.ai helps:** The HTTP Connector parses JSON and XML responses, returns files you can pass to the next step, and sends multipart form data for uploads. ## Frequently asked questions ### Does Tray.ai connect to Billabex? Yes. Tray.ai connects to Billabex through the HTTP Connector, which calls the Billabex API directly. Any call the Billabex API documents can run as a step in a Tray.ai workflow. ### How does Tray.ai authenticate with Billabex? The Billabex API uses OAuth 2.0. You save it once as a Tray.ai authentication, and the HTTP Connector adds it to every request. ### Can I get a dedicated Billabex connector? Billabex runs through the HTTP Connector rather than a dedicated connector. If your team wants one, the Tray.ai connector SDK can build a dedicated Billabex connector from the Billabex API. ## Learn more - Intelligent Integration: https://tray.ai/platform/intelligent-ipaas/ - Merlin Agent Builder: https://tray.ai/platform/merlin-agent-builder/ - Agent Gateway for MCP: https://tray.ai/platform/agent-gateway/ - Book a demo: https://tray.ai/contact/