# Sellsy integrations: companies and contacts

> Create a company, create a contact and create an opportunity in Sellsy. Connect Sellsy to the rest of your sales stack with Tray.ai.

**Canonical page:** https://tray.ai/connectors/sellsy-integrations/
**Categories:** Sales
**Connects through:** HTTP Connector

## Overview

Sellsy is a French business suite for small companies that combines a CRM with quotes, invoicing, payments, and pre-accounting. Tray.ai connects to Sellsy through the HTTP Connector, so your workflows can call the Sellsy API alongside the rest of your stack.

## Use cases

### Companies

Read, create, update, and delete companies in Sellsy from any Tray.ai workflow. The Sellsy API covers calls such as list companies and create a company.

- List companies
- Create a company
- Update a company

### Contacts

Read, create, update, and delete contacts in Sellsy from any Tray.ai workflow. The Sellsy API covers calls such as list contacts and create a contact.

- List contacts
- Create a contact
- Update a contact

### Opportunities

Read, create, update, and delete opportunities in Sellsy from any Tray.ai workflow. The Sellsy API covers calls such as list opportunities and create an opportunity.

- List opportunities
- Create an opportunity
- Update an opportunity

### Invoices

Read, create, and update invoices in Sellsy from any Tray.ai workflow. The Sellsy API covers calls such as list invoices and create an invoice.

- List invoices
- Create an invoice
- Update an invoice

### Estimates

Read, create, and update estimates in Sellsy from any Tray.ai workflow. The Sellsy API covers calls such as list estimates and create an estimate.

- List estimates
- Create an estimate
- Update an estimate

### Tasks

Read, create, update, and delete tasks in Sellsy from any Tray.ai workflow. The Sellsy API covers calls such as list tasks and create a task.

- List tasks
- Create a task
- Update a task

## Challenges Tray.ai solves

### Keeping Sellsy 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 Sellsy 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 Sellsy 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 Sellsy 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 Sellsy?

Yes. Tray.ai connects to Sellsy through the HTTP Connector, which calls the Sellsy API directly. Any call the Sellsy API documents can run as a step in a Tray.ai workflow.

### How does Tray.ai authenticate with Sellsy?

The Sellsy 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 Sellsy connector?

Sellsy runs through the HTTP Connector rather than a dedicated connector. If your team wants one, the Tray.ai connector SDK can build a dedicated Sellsy connector from the Sellsy 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/