--- title: "Connect Stax and Vapi - APIANT.ai" description: "When \"List Payment\" fires in Stax, your agent runs \"Add assistant\" in Vapi, or \"New Assistant\" in Vapi to \"Create Customer\" in Stax." canonical: "https://apiant.ai/connect/stax-to-vapi" --- # Connect Stax and Vapi When **List Payment** fires in [Stax](https://apiant.ai/connections/stax), your agent runs **Add assistant** in [Vapi](https://apiant.ai/connections/vapi), or **New Assistant** in Vapi to **Create Customer** in Stax. Describe the whole flow and it is built, tested on every scenario and kept running. Stax **1** trigger Stax **17** actions Vapi **3** triggers Vapi **21** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want Stax and Vapi 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 Stax and Vapi can do together ### From Stax to Vapi - When **List Payment** in Stax then **Add assistant** in Vapi - When **List Payment** in Stax then **Add phone number** in Vapi ### From Vapi to Stax - When **New Assistant** in Vapi then **Create Customer** in Stax - When **New Call** in Vapi then **Create Scheduled Invoice** in Stax 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 Stax and Vapi ## Triggers and actions 4 triggers · 38 actions - Trigger **List Payment** Triggers when a new payment transaction is recorded in Stax. - Action **Capture payment** Captures funds from a pre-authorized Stax transaction, turning the pre-authorization into a completed charge. Returns the updated transaction. - Action **Create Customer** Creates a customer record on the Stax merchant account and returns the new customer. - Action **Create Item** Creates an item in the merchant's Stax catalog and returns the new catalog item. - Action **Create Scheduled Invoice** Creates a scheduled invoice that automatically generates invoices for a customer on a one-time or recurring schedule, with optional autopay. Returns the new schedule. - Action **Delete Catalog Item** Deletes a catalog item from Stax. - Action **Delete payment method** Deletes a customer's saved payment method in Stax and returns the deleted payment method. - Action **Delete Scheduled Invoice** Deletes a recurring invoice schedule so it stops generating invoices. - Action **Find Customers** Searches your Stax customers by name, email, company, phone, address or other details and returns the matching customers. - Action **Find Invoices** Returns the invoices on the Stax merchant account that match the search criteria you supply, such as keywords, customer name, company, email, price, schedule or payment method. - Action **Find Items** Searches the merchant's catalog for items matching a name, code, price or other criteria and returns the matching items. - Action **Find Payment Methods** Returns all saved payment methods (cards and bank accounts) for a Stax customer. - Action **Find Payments** Returns the payments and other transactions on the merchant account that match the search criteria, such as keywords, customer, date range, amount, type or status. - Action **Make a Payment** Charges a customer's saved payment method for the amount you specify, or places a pre-authorization to capture later. Returns the resulting transaction. - Action **Refund payment** Refunds all or part of a settled Stax payment transaction back to the customer. - Action **Update customer** Updates an existing customer's contact details, address, notes and options in Stax, and returns the updated customer. - Action **Update invoice** Updates an existing unpaid invoice's customer, amounts, line items, memos and payment options, and returns the updated invoice. Fully paid invoices cannot be edited. - Action **Void payment** Voids a payment transaction in Stax before it settles, cancelling the charge. - Trigger **New Assistant** Triggers when a new assistant is created in your Vapi organization. - Trigger **New Call** Triggers when a new call is created in Vapi, optionally limited to one assistant or phone number. - Trigger **New File** Triggers when a new file is uploaded to your Vapi account. - Action **Add assistant** Creates a new Vapi voice assistant with its model, voice, transcriber, first message and call behavior. - Action **Add phone number** Adds a phone number to Vapi: a free Vapi number, or one you bring from Twilio, Vonage, Telnyx or your own SIP trunk. Returns the new phone number record. - Action **Add squad** Creates a squad: a group of assistants that hand a call off to one another, starting with the first member. - Action **Add tool** Creates a tool in Vapi (for example a function, end-call, transfer-call or API-request tool) that assistants can use during calls. - Action **Create Call** Starts a Vapi call (or a batch of outbound calls) using a saved or one-off assistant, squad or workflow, and returns the created call. - Action **Create Chat** Sends a message to a Vapi assistant or squad as a text chat and returns the chat, including the assistant's reply messages. - Action **Delete assistant** Deletes an assistant from your Vapi account and returns the deleted assistant. - Action **Delete Call Data** Deletes a call and its data, including recordings, and returns the deleted call. - Action **Delete Chat** Deletes a chat from your Vapi account and returns the deleted chat's details. - Action **Delete File** Deletes a file from your Vapi account. - Action **Find Call** Finds calls matching a call id, assistant, phone number, or created/updated date range. Returns up to 1000 matching calls. - Action **Get assistant** Returns a Vapi assistant's full configuration, including its model, voice, transcriber and first message. - Action **Get file** Returns a file uploaded to Vapi, including its name, size, type, processing status and download URL. - Action **List assistants** Returns the voice assistants in your Vapi account, optionally filtered by when they were created or last updated. - Action **List chats** Returns the chats in your Vapi account, optionally filtered by assistant, squad, session or creation/update date. - Action **List files** Returns the files uploaded to your Vapi account, optionally filtered by purpose. - Action **List phone numbers** Returns the phone numbers in your Vapi account, optionally filtered by when they were created or updated. - Action **List tools** Returns the tools configured in your Vapi account, optionally filtered by when they were created or updated. - Action **Update Call** Updates the name of an existing Vapi call. - Action **Update phone number** Updates a Vapi phone number's name, the assistant, squad or workflow that answers it, and its provider settings. - Action **Upload File** Uploads a file to Vapi, for use by assistants or knowledge bases, and returns the stored file record. ## Each app on its own - [ **Stax** Stax makes it easy to accept payments in-person and online and provides businesses with the tools they need...](https://apiant.ai/connections/stax) - [ **Vapi** Vapi is a developer-first Voice AI platform for building natural, low-latency, multilingual phone agents via...](https://apiant.ai/connections/vapi) Reviews ## What our customers say ## More from Stax - [ **Stax to Stripe** Stripe is a payment processing platform for online businesses.](https://apiant.ai/connect/stax-to-stripe) - [ **Stax to Trello** Trello is a visual collaboration tool that organizes projects into boards, lists, and cards.](https://apiant.ai/connect/stax-to-trello) - [ **Stax to Zoom** Zoom unifies cloud video conferencing, simple online meetings, group messaging, and a software-based...](https://apiant.ai/connect/stax-to-zoom) - [ **Stax to Twilio** Cloud communications platform for sending SMS/MMS messages, making and managing voice calls, and looking up...](https://apiant.ai/connect/stax-to-twilio) - [ **Stax to Typeform** Build and publish online forms, surveys, and quizzes with Typeform.](https://apiant.ai/connect/stax-to-typeform) - [ **Stax to Webflow** Webflow is a professional website builder and CMS for designing, building, and launching responsive...](https://apiant.ai/connect/stax-to-webflow) ## More into Vapi - [ **HubSpot to Vapi** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-vapi) - [ **Salesforce to Vapi** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-vapi) - [ **Slack to Vapi** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-vapi) - [ **Google Sheets to Vapi** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-vapi) - [ **Gmail to Vapi** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-vapi) - [ **Google Calendar to Vapi** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-vapi) Questions ## Stax and Vapi, answered ### ### What can start an automation from Stax? Any of Stax's 1 trigger in the catalog, including List Payment. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in Vapi when something happens in Stax? Any of Vapi's 21 actions, including Create Call, Create Chat, Update Call and Update phone number. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from Vapi to Stax? Yes. When something happens in Vapi, your agent can act in Stax too. This page covers both directions: Vapi's triggers and Stax's actions are listed here as well. ### ### Do I have to build a connector for Stax or Vapi? 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 Stax and Vapi 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.