--- title: "Connect Invoice Ninja and Stax - APIANT.ai" description: "When \"New expense\" fires in Invoice Ninja, your agent runs \"Create Customer\" in Stax, or \"List Payment\" in Stax to \"Find payments\" in Invoice Ninja." canonical: "https://apiant.ai/connect/invoice-ninja-to-stax" --- # Connect Invoice Ninja and Stax When **New expense** fires in [Invoice Ninja](https://apiant.ai/connections/invoice-ninja), your agent runs **Create Customer** in [Stax](https://apiant.ai/connections/stax), or **List Payment** in Stax to **Find payments** in Invoice Ninja. Describe the whole flow and it is built, tested on every scenario and kept running. Invoice Ninja **1** trigger Invoice Ninja **10** actions Stax **1** trigger Stax **17** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want Invoice Ninja and Stax 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 Invoice Ninja and Stax can do together ### From Invoice Ninja to Stax - When **New expense** in Invoice Ninja then **Create Customer** in Stax - When **New expense** in Invoice Ninja then **Create Scheduled Invoice** in Stax ### From Stax to Invoice Ninja - When **List Payment** in Stax then **Find payments** in Invoice Ninja - When **List Payment** in Stax then **Email Invoice** in Invoice Ninja 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 Invoice Ninja and Stax ## Triggers and actions 2 triggers · 27 actions - Trigger **New expense** Triggers when a new expense is created in Invoice Ninja. - Action **Delete invoice** Deletes an invoice from your Invoice Ninja company by its id. - Action **Email Invoice** Emails an invoice to its client using the chosen email template, optionally with a custom subject, body and CC address. - Action **Email Quote** Emails an existing quote to its client, using a quote template or a custom subject and body. Returns the confirmation message and the quote that was emailed. - Action **Find Client** Finds clients by name, email, number or search text and returns the matching client records. - Action **Find Credit** Returns the credits that match a credit number, search text, client, status or date. - Action **Find Invoice** Finds invoices by number, search text, client, status or date, and returns the matches with the first one broken out. - Action **Find payments** Returns the payments that match a payment number, search text, client or other criteria. - Action **Find Product** Finds products in Invoice Ninja by name, product key or other filters, returning the matches and the first match. - Action **Find Project** Finds projects whose name, number or notes match the search text and returns the matches. - Action **Find Quote** Returns the quotes that match a quote number, search text, client, status or date criteria. - 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. ## Each app on its own - [ **Invoice Ninja** Create. Send. Get Paid. Invoice Ninja is a free, code-available suite of apps to invoice clients, accept...](https://apiant.ai/connections/invoice-ninja) - [ **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) Reviews ## What our customers say ## More from Invoice Ninja - [ **Invoice Ninja to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/invoice-ninja-to-salesforce) - [ **Invoice Ninja to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/invoice-ninja-to-slack) - [ **Invoice Ninja to Mailchimp** Mailchimp marketing automation and email platform.](https://apiant.ai/connect/invoice-ninja-to-mailchimp) - [ **Invoice Ninja to Stripe** Stripe is a payment processing platform for online businesses.](https://apiant.ai/connect/invoice-ninja-to-stripe) - [ **Invoice Ninja to Shopify** Shopify is a commerce platform for online stores and retail point-of-sale.](https://apiant.ai/connect/invoice-ninja-to-shopify) - [ **Invoice Ninja to QuickBooks Online** QuickBooks Online accounting — manage customers, invoices, bills, payments, vendors, expenses, and more via...](https://apiant.ai/connect/invoice-ninja-to-quickbooks-online) ## More into Stax - [ **HubSpot to Stax** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-stax) - [ **Salesforce to Stax** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-stax) - [ **Slack to Stax** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-stax) - [ **Google Sheets to Stax** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-stax) - [ **Gmail to Stax** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-stax) - [ **Google Calendar to Stax** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-stax) Questions ## Invoice Ninja and Stax, answered ### ### What can start an automation from Invoice Ninja? Any of Invoice Ninja's 1 trigger in the catalog, including New expense. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in Stax when something happens in Invoice Ninja? Any of Stax's 17 actions, including Create Customer, Create Item, Create Scheduled Invoice and Update customer. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from Stax to Invoice Ninja? Yes. When something happens in Stax, your agent can act in Invoice Ninja too. This page covers both directions: Stax's triggers and Invoice Ninja's actions are listed here as well. ### ### Do I have to build a connector for Invoice Ninja or Stax? 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 Invoice Ninja and Stax 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.