--- title: "Connect Cal.com to UserCheck - APIANT.ai" description: "When \"Booking Created\" fires in Cal.com, your agent runs \"Check Email\" in UserCheck." canonical: "https://apiant.ai/connect/cal-com-to-usercheck" --- # Connect Cal.com to UserCheck When **Booking Created** fires in [Cal.com](https://apiant.ai/connections/cal-com), your agent runs **Check Email** in [UserCheck](https://apiant.ai/connections/usercheck). Describe the whole flow and it is built, tested on every scenario and kept running. Cal.com **5** triggers UserCheck **3** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want Cal.com and UserCheck 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 Cal.com can start in UserCheck - When **Booking Created** in Cal.com then **Check Email** in UserCheck - When **Out of Office Created** in Cal.com then **Check Domain** in UserCheck 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 Cal.com and UserCheck ## Triggers and actions 5 triggers · 3 actions - Trigger **Booking Cancelled** Triggers when a booking is cancelled. - Trigger **Booking Created** Triggers when a new booking is created. - Trigger **Booking Rescheduled** Triggers when a booking is rescheduled. - Trigger **Meeting Ended** Triggers after meeting ends. - Trigger **Out of Office Created** Triggers when a new Out Of Office entry is created. - Action **Check Domain** Returns UserCheck's signals for a domain: whether it is disposable, a relay or public email service, spam-flagged or blocklisted, its mail configuration (MX, SPF, DMARC), age and authority. - Action **Check Email** Checks an email address with UserCheck and returns its signals: whether it is disposable, a relay or public address, a role account, its normalized form, domain age, MX setup and more. - Action **Get account status** Returns your UserCheck account details, plan information, and credit usage for the current billing period. ## Each app on its own - [ **Cal.com** Cal.com simplifies scheduling for individuals, teams, and developers with powerful features and integrations...](https://apiant.ai/connections/cal-com) - [ **UserCheck** UserCheck is a service that validates email addresses and domains to detect disposable and temporary email...](https://apiant.ai/connections/usercheck) Reviews ## What our customers say ## More from Cal.com - [ **Cal.com to Google Drive** Google Drive is a cloud storage solution for uploading, sharing, and collaborating on files across devices...](https://apiant.ai/connect/cal-com-to-google-drive) - [ **Cal.com to Cloudflare Trace** Cloudflare Trace is a free JSON wrapper over Cloudflare's edge trace endpoint that reports what Cloudflare...](https://apiant.ai/connect/cal-com-to-cloudflare-trace) - [ **Cal.com to Odoo CRM** Odoo is a powerful open source platform with dozens of apps to help you grow your business.](https://apiant.ai/connect/cal-com-to-odoo-crm) - [ **Cal.com to HubSpot** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/cal-com-to-hubspot) - [ **Cal.com to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/cal-com-to-salesforce) - [ **Cal.com to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/cal-com-to-slack) ## More into UserCheck - [ **HubSpot to UserCheck** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-usercheck) - [ **Salesforce to UserCheck** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-usercheck) - [ **Slack to UserCheck** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-usercheck) - [ **Google Sheets to UserCheck** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-usercheck) - [ **Gmail to UserCheck** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-usercheck) - [ **Google Calendar to UserCheck** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-usercheck) Questions ## Cal.com and UserCheck, answered ### ### What can start an automation from Cal.com? Any of Cal.com's 5 triggers in the catalog, including Booking Created, Out of Office Created, Booking Rescheduled and Meeting Ended. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in UserCheck when something happens in Cal.com? Any of UserCheck's 3 actions, including Check Domain, Check Email and Get account status. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from UserCheck to Cal.com? UserCheck has no triggers in the catalog today, so automations start in Cal.com. If you need the other direction, ask: your agent reads UserCheck's API documentation and adds it. ### ### Do I have to build a connector for Cal.com or UserCheck? 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 Cal.com and UserCheck without building an automation? Yes. With your AI client connected to APIANT, ask it to do something in UserCheck 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.