--- title: "Connect CalendarLink and Space Invoices / Apollo - APIANT.ai" description: "When \"New Upcoming Event\" fires in CalendarLink, your agent runs \"Add customer\" in Space Invoices / Apollo." canonical: "https://apiant.ai/connect/calendarlink-to-space-invoices-apollo" --- # Connect CalendarLink and Space Invoices / Apollo When **New Upcoming Event** fires in [CalendarLink](https://apiant.ai/connections/calendarlink), your agent runs **Add customer** in [Space Invoices / Apollo](https://apiant.ai/connections/space-invoices-apollo), or **New Document** in Space Invoices / Apollo to **List Contacts** in CalendarLink. Describe the whole flow and it is built, tested on every scenario and kept running. CalendarLink **1** trigger CalendarLink **8** actions Space Invoices / Apollo **1** trigger Space Invoices / Apollo **9** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want CalendarLink and Space Invoices / Apollo 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 CalendarLink and Space Invoices / Apollo can do together ### From CalendarLink to Space Invoices / Apollo - When **New Upcoming Event** in CalendarLink then **Add customer** in Space Invoices / Apollo - When **New Upcoming Event** in CalendarLink then **Update customer** in Space Invoices / Apollo ### From Space Invoices / Apollo to CalendarLink - When **New Document** in Space Invoices / Apollo then **List Contacts** in CalendarLink - When **New Document** in Space Invoices / Apollo then **Create New Event** in CalendarLink 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 CalendarLink and Space Invoices / Apollo ## Triggers and actions 2 triggers · 17 actions - Trigger **New Upcoming Event** Triggered when a new upcoming event is added to your CalendarLink organisation. - Action **Create New Event** Creates an event in a CalendarLink collection and returns its add-to-calendar link. Times use the format 2026-09-01 09:00:00. Optionally turns on RSVP with a deadline, attendee limit and notification settings. - Action **Find Event** Searches your CalendarLink events for one whose title contains the text you give, and returns the first match with its add-to-calendar link, times and RSVP counts. - Action **List Contacts** Returns a page of the contacts in your CalendarLink organisation, 15 per page, along with how many pages there are. - Action **List Event Collections** Returns every event collection in your CalendarLink organisation, with each collection's ID, name, description, public link and event count. - Action **List Event Registrations** Returns a page of the people who signed up for one CalendarLink event, 15 per page. The event must have RSVP turned on. - Action **List Past Events** Returns a page of your CalendarLink events that have already finished, 15 per page, newest first. - Action **List Upcoming Events** Returns a page of your CalendarLink events that have not happened yet, 15 per page. - Action **Update Event Collection** Changes the settings of one CalendarLink event collection — its name, description, appearance, what visitors can add and whether sign-up is required. Only the fields you fill in are changed; the rest keep their current values. - Trigger **New Document** Fires when a new document (invoice, estimate, credit note, advance invoice or delivery note) is created. - Action **Add customer** Create a customer. - Action **Add item** Create a catalog item/product. - Action **Add payment** Record a payment against an invoice. - Action **Create Document** Creates a new invoice document in Space Invoices. Totals, taxes and numbering are calculated by Space Invoices. - Action **Find customers by criteria** Search customers with filter/search query params. - Action **Get customer** Retrieve a customer by id. - Action **Get invoice** Retrieve an invoice by id. - Action **List items** Lists catalog items. - Action **Update customer** Update a customer by id. ## Each app on its own - [ **CalendarLink** CalendarLink creates add-to-calendar links to any calendar service and make sure your users don't forget...](https://apiant.ai/connections/calendarlink) - [ **Space Invoices / Apollo** Space Invoices is an advanced, multi-tenant invoicing API that helps companies across the world to easily...](https://apiant.ai/connections/space-invoices-apollo) Reviews ## What our customers say ## More from CalendarLink - [ **CalendarLink to Stripe** Stripe is a payment processing platform for online businesses.](https://apiant.ai/connect/calendarlink-to-stripe) - [ **CalendarLink to HubSpot** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/calendarlink-to-hubspot) - [ **CalendarLink to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/calendarlink-to-salesforce) - [ **CalendarLink to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/calendarlink-to-slack) - [ **CalendarLink to Google Sheets** Google Sheets](https://apiant.ai/connect/calendarlink-to-google-sheets) - [ **CalendarLink to Gmail** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/calendarlink-to-gmail) ## More into Space Invoices / Apollo - [ **MINDBODY to Space Invoices / Apollo** MINDBODY is a powerful business management software that combines your scheduling, task automation...](https://apiant.ai/connect/mindbody-to-space-invoices-apollo) - [ **HubSpot to Space Invoices / Apollo** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-space-invoices-apollo) - [ **Salesforce to Space Invoices / Apollo** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-space-invoices-apollo) - [ **Slack to Space Invoices / Apollo** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-space-invoices-apollo) - [ **Google Sheets to Space Invoices / Apollo** Google Sheets](https://apiant.ai/connect/google-sheets-to-space-invoices-apollo) - [ **Gmail to Space Invoices / Apollo** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-space-invoices-apollo) Questions ## CalendarLink and Space Invoices / Apollo, answered ### ### What can start an automation from CalendarLink? Any of CalendarLink's 1 trigger in the catalog, including New Upcoming Event. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in Space Invoices / Apollo when something happens in CalendarLink? Any of Space Invoices / Apollo's 9 actions, including Create Document, Update customer, Add customer and Add item. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from Space Invoices / Apollo to CalendarLink? Yes. When something happens in Space Invoices / Apollo, your agent can act in CalendarLink too. This page covers both directions: Space Invoices / Apollo's triggers and CalendarLink's actions are listed here as well. ### ### Do I have to build a connector for CalendarLink or Space Invoices / Apollo? 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 CalendarLink and Space Invoices / Apollo 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.