--- title: "Connect Scale Fast and Sellsy - APIANT.ai" description: "When \"New Contact\" fires in Scale Fast, your agent runs \"Create Contact\" in Sellsy, or \"New Company\" in Sellsy to \"Create Contact\" in Scale Fast." canonical: "https://apiant.ai/connect/scale-fast-to-sellsy" --- # Connect Scale Fast and Sellsy When **New Contact** fires in [Scale Fast](https://apiant.ai/connections/scale-fast), your agent runs **Create Contact** in [Sellsy](https://apiant.ai/connections/sellsy), or **New Company** in Sellsy to **Create Contact** in Scale Fast. Describe the whole flow and it is built, tested on every scenario and kept running. Scale Fast **1** trigger Scale Fast **6** actions Sellsy **9** triggers Sellsy **15** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want Scale Fast and Sellsy to do together? Give your AI client this address. `https://mcp.apiant.ai` One connection does both: ask your client to act in an app once, or have it build an automation that keeps running. Any client that takes a remote MCP server. Nothing to install. Create your free account, then sign in once in your browser. ### Set it up in your client ### Claude Code Run this in the directory you want to work in. `claude mcp add --transport http -s project apiant-ai https://mcp.apiant.ai` Start Claude Code there, approve the server, and sign in in the browser page it opens. [Claude Code guide (opens in a new tab)](https://apiant.ai/docs/mcp/claude-code) ### Claude, web and desktop Open Customize, then Connectors, then Add custom connector, and paste the address. On Team and Enterprise an owner adds it first. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### Cursor Add the address to your MCP configuration as a server URL. Cursor signs you in in your browser. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### Zed Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### Codex and the ChatGPT desktop app Open Settings, then MCP servers, then Add server, and choose Streamable HTTP. From the terminal, Codex takes the address with its own add command and then signs you in. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### Any other MCP client Paste the address where the client asks for a remote MCP server URL, and name the server apiant-ai where it lets you. APIANT's skills reach the client over the same connection. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) Example flows ## What Scale Fast and Sellsy can do together ### From Scale Fast to Sellsy - When **New Contact** in Scale Fast then **Create Contact** in Sellsy - When **New Contact** in Scale Fast then **Create/Update Contact** in Sellsy ### From Sellsy to Scale Fast - When **New Company** in Sellsy then **Create Contact** in Scale Fast - When **New Contact** in Sellsy then **List contact lists** in Scale Fast Starting points drawn from the triggers and actions in the catalog today. Describe the flow you need, at any depth, and your agent builds it and tests every scenario before it ships. Everything your agent can do with Scale Fast and Sellsy ## Triggers and actions 10 triggers · 21 actions - Trigger **New Contact** Triggers when a new contact is added to your Scale Fast account. - Action **Create Contact** Creates a new contact in Scale Fast with an email address and optional name, address, notes and tags. - Action **Delete contact** Deletes a contact from your Scale Fast account. - Action **Find contacts by criteria** Finds contacts whose fields match the criteria you supply, such as first name, last name, email or city. Returns up to 50 matching contacts. - Action **List contact lists** Returns the contact lists in your Scale Fast account, with each list's name and subscriber count. - Action **Subscribe List** Subscribes an existing contact (by ID or email) to a Scale Fast contact list. - Action **Unsubscribe From List** Removes a contact from a Scale Fast contact list, identified by contact ID or email. - Trigger **Deleted Task** Triggers when a task is deleted. - Trigger **New Company** Triggers when a new company (client or prospect) is created. - Trigger **New Contact** Triggers when a new contact is created. - Trigger **New Opportunity** Triggers when a new opportunity is created. - Trigger **New Task** Triggers when a new task is created. - Trigger **Updated Company** Triggers when a company (client or prospect) is updated. - Trigger **Updated Contact** Triggers when a contact is updated. - Trigger **Updated Opportunity Status** Triggers when the status is changed on an opportunity. - Trigger **Updated Task** Triggers when a task is updated. - Action **Create Annotation** Creates a new annotation. - Action **Create Company** Creates a new company (prospect or client). - Action **Create Contact** Creates a new contact. - Action **Create Opportunity** Creates an opportunity. - Action **Create Task** Creates a new Task. - Action **Create/Update Company** Creates a new company (prospect or client). Make an update if we found an existing company with provided email. - Action **Create/Update Contact** Creates a new contact. Make an update if we found an existing contact with provided email. - Action **Delete Task** Deletes a Sellsy task. - Action **Find Company** Finds an existing company (prospect or client). - Action **Find Contact** Finds an existing contact. - Action **Get Opportunity** Returns one Sellsy opportunity by id. - Action **Get Task** Returns one Sellsy task by id. - Action **List Opportunity Pipeline Steps** Lists the steps of a pipeline; supplies the required step id for Create Opportunity. - Action **Update Opportunity** updates an existing opportunity's fields, including its status (open/won/lost/cancelled/...) and pipeline step; a status change fires the opportunity.status webhook event. - Action **Update Task** updates a task's title, description, due date, status etc.; fires task.updated. ## Each app on its own - [ **Scale Fast** The All-In-One Software For Running & Scaling Your Business](https://apiant.ai/connections/scale-fast) - [ **Sellsy** Sellsy is a French SaaS that helps SMBs and VBEs manage sales, invoicing, marketing, and cash flow in one...](https://apiant.ai/connections/sellsy) Reviews ## What our customers say ## More from Scale Fast - [ **Scale Fast to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/scale-fast-to-slack) - [ **Scale Fast to Stripe** Stripe is a payment processing platform for online businesses.](https://apiant.ai/connect/scale-fast-to-stripe) - [ **Scale Fast to Shopify** Shopify is a commerce platform for online stores and retail point-of-sale.](https://apiant.ai/connect/scale-fast-to-shopify) - [ **Scale Fast to Trello** Trello is a visual collaboration tool that organizes projects into boards, lists, and cards.](https://apiant.ai/connect/scale-fast-to-trello) - [ **Scale Fast to Zoom** Zoom unifies cloud video conferencing, simple online meetings, group messaging, and a software-based...](https://apiant.ai/connect/scale-fast-to-zoom) - [ **Scale Fast to Twilio** Cloud communications platform for sending SMS/MMS messages, making and managing voice calls, and looking up...](https://apiant.ai/connect/scale-fast-to-twilio) ## More into Sellsy - [ **Discord to Sellsy** Discord is an all-in-one voice and text chat for gamers.](https://apiant.ai/connect/discord-to-sellsy) - [ **HubSpot to Sellsy** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-sellsy) - [ **Salesforce to Sellsy** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-sellsy) - [ **Google Sheets to Sellsy** Google Sheets](https://apiant.ai/connect/google-sheets-to-sellsy) - [ **Gmail to Sellsy** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-sellsy) - [ **Google Calendar to Sellsy** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-sellsy) Questions ## Scale Fast and Sellsy, answered ### ### What can start an automation from Scale Fast? Any of Scale Fast's 1 trigger in the catalog, including New Contact. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in Sellsy when something happens in Scale Fast? Any of Sellsy's 15 actions, including Create Annotation, Create Company, Create Contact and Create Opportunity. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from Sellsy to Scale Fast? Yes. When something happens in Sellsy, your agent can act in Scale Fast too. This page covers both directions: Sellsy's triggers and Scale Fast's actions are listed here as well. ### ### Do I have to build a connector for Scale Fast or Sellsy? No. Both are in the catalog with their triggers and actions. You describe the automation; your agent builds it, tests every scenario and keeps it running. ### ### Can my AI client use Scale Fast and Sellsy without building an automation? Yes. With your AI client connected to APIANT, ask it to do something in either app once and it runs that action on the spot. Ask for an automation and your agent builds it, tests every scenario and keeps it running. One connection covers both. ### ### What happens when something fails? Your agent works that out for you. It plans the failure paths along with the happy path, then tests every scenario before it ships. ### ### Is there a free plan? Yes. Every plan includes the agent, including free, and building from your own AI client spends no assistant credits.