--- title: "Connect Scale Fast to JustCall - APIANT.ai" description: "When \"New Contact\" fires in Scale Fast, your agent runs \"Update Contact\" in JustCall." canonical: "https://apiant.ai/connect/scale-fast-to-justcall" --- # Connect Scale Fast to JustCall When **New Contact** fires in [Scale Fast](https://apiant.ai/connections/scale-fast), your agent runs **Update Contact** in [JustCall](https://apiant.ai/connections/justcall). Describe the whole flow and it is built, tested on every scenario and kept running. Scale Fast **1** trigger Scale Fast **6** actions JustCall **10** 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 JustCall 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 can start in JustCall - When **New Contact** in Scale Fast then **Update Contact** in JustCall - When **New Contact** in Scale Fast then **Find Contact** in JustCall 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 JustCall ## Triggers and actions 1 trigger · 16 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. - Action **Add Contact to Sales Dialer Campaign** Adds a contact to a JustCall Sales Dialer campaign. Identify the contact by its Sales Dialer contact ID or by phone number; if the phone number does not match an existing contact, a new contact is created and added. Details passed for an existing contact update that contact. - Action **Add Sales Dialer Campaign** Creates a new Sales Dialer campaign. - Action **Delete Contact From Sales Dialer Campaign** This action allows you to delete a contact from an existing Sales Dialer Campaign - Action **Find Contact** Returns the JustCall contacts that match the specified phone number and/or first and last name. - Action **Get Contact** Retrieves a single JustCall contact by its id. - Action **List Contacts** Lists contacts in the JustCall account, optionally filtered by agent, phone number, name or status. Returns up to 500 contacts. - Action **List Phone Numbers** Lists the phone numbers on your JustCall account, optionally filtered by type, capability, owner, sharing or business hours setting. - Action **List Sales Dialer Campaigns** Returns all Sales Dialer campaigns on the account. - Action **List Users** Lists the users in your JustCall account, optionally filtered by availability, email, user group or role. - Action **Update Contact** Updates an existing contact in JustCall's Contacts, located by its id or its primary phone number. Contact status (DND/DNM/Blacklist) cannot be changed with this action. ## Each app on its own - [ **Scale Fast** The All-In-One Software For Running & Scaling Your Business](https://apiant.ai/connections/scale-fast) - [ **JustCall** JustCall helps sales and support teams to connect easily with their leads & customers.](https://apiant.ai/connections/justcall) 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 JustCall - [ **HubSpot to JustCall** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-justcall) - [ **Salesforce to JustCall** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-justcall) - [ **Slack to JustCall** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-justcall) - [ **Google Sheets to JustCall** Google Sheets](https://apiant.ai/connect/google-sheets-to-justcall) - [ **Gmail to JustCall** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-justcall) - [ **Google Calendar to JustCall** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-justcall) Questions ## Scale Fast and JustCall, 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 JustCall when something happens in Scale Fast? Any of JustCall's 10 actions, including Update Contact, Add Contact to Sales Dialer Campaign, Add Sales Dialer Campaign and Find Contact. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from JustCall to Scale Fast? JustCall has no triggers in the catalog today, so automations start in Scale Fast. If you need the other direction, ask: your agent reads JustCall's API documentation and adds it. ### ### Do I have to build a connector for Scale Fast or JustCall? 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 JustCall 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.