--- title: "Connect Apptoto to LettrLabs - APIANT.ai" description: "When \"Participant Reminder State Changed\" fires in Apptoto, your agent runs \"Send Purchase Event\" in LettrLabs." canonical: "https://apiant.ai/connect/apptoto-to-lettrlabs" --- # Connect Apptoto to LettrLabs When **Participant Reminder State Changed** fires in [Apptoto](https://apiant.ai/connections/apptoto), your agent runs **Send Purchase Event** in [LettrLabs](https://apiant.ai/connections/lettrlabs). Describe the whole flow and it is built, tested on every scenario and kept running. Apptoto **1** trigger Apptoto **10** actions LettrLabs **5** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want Apptoto and LettrLabs 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 Apptoto can start in LettrLabs - When **Participant Reminder State Changed** in Apptoto then **Send Purchase Event** in LettrLabs - When **Participant Reminder State Changed** in Apptoto then **Add Address Book Entry** in LettrLabs 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 Apptoto and LettrLabs ## Triggers and actions 1 trigger · 15 actions - Trigger **Participant Reminder State Changed** Trigger when a participant's reminder state changes in Apptoto (e.g. to confirmed, cancelled, etc.) - Action **Add opt-out list entry** Add entry to opt-in/opt-out list. - Action **Create or Update Contact** Creates or updates a contact in Apptoto - Action **Create or Update Event** Creates or updates an event in Apptoto - Action **Find a Contact** Returns the contacts that match the specified search query. - Action **Find an Event** Search for event in Apptoto - Action **List calendars** List calendars. - Action **List opt-out list entries** Returns the phone numbers or email addresses on one of your Apptoto opt-out or opt-in lists. - Action **Remove Contact** Removes a contact in Apptoto - Action **Remove Event** Removes an event in Apptoto - Action **Update event state** Mark an event (e.g. confirmed/cancelled). - Action **Add Address Book Entry** Add an entry to the account's address book. - Action **Delete Conversion** Delete a recorded conversion by id. - Action **Get Conversion** Fetch the status of a single conversion by id. - Action **List Conversions** Returns all conversions recorded for this LettrLabs account, each with its processing status. - Action **Send Purchase Event** Records a purchase or lead with LettrLabs so it can be matched back to the mail you sent, and returns how LettrLabs parsed and typed it. ## Each app on its own - [ **Apptoto** For appointment-based businesses, Apptoto offers automated SMS text, email or voice reminders and online...](https://apiant.ai/connections/apptoto) - [ **LettrLabs** LettrLabs enables you to create handwritten, personalized direct mail to unleash your marketing ROI.](https://apiant.ai/connections/lettrlabs) Reviews ## What our customers say ## More from Apptoto - [ **Apptoto to GoHighLevel** All-in-one sales and marketing platform agencies white-label and resell to their clients — contacts...](https://apiant.ai/connect/apptoto-to-gohighlevel) - [ **Apptoto to HubSpot** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/apptoto-to-hubspot) - [ **Apptoto to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/apptoto-to-salesforce) - [ **Apptoto to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/apptoto-to-slack) - [ **Apptoto to Google Sheets** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/apptoto-to-google-sheets) - [ **Apptoto to Gmail** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/apptoto-to-gmail) ## More into LettrLabs - [ **Stripe to LettrLabs** Stripe is a payment processing platform for online businesses.](https://apiant.ai/connect/stripe-to-lettrlabs) - [ **HubSpot to LettrLabs** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-lettrlabs) - [ **Salesforce to LettrLabs** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-lettrlabs) - [ **Slack to LettrLabs** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-lettrlabs) - [ **Google Sheets to LettrLabs** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-lettrlabs) - [ **Gmail to LettrLabs** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-lettrlabs) Questions ## Apptoto and LettrLabs, answered ### ### What can start an automation from Apptoto? Any of Apptoto's 1 trigger in the catalog, including Participant Reminder State Changed. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in LettrLabs when something happens in Apptoto? Any of LettrLabs's 5 actions, including Send Purchase Event, Add Address Book Entry, Get Conversion and List Conversions. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from LettrLabs to Apptoto? LettrLabs has no triggers in the catalog today, so automations start in Apptoto. If you need the other direction, ask: your agent reads LettrLabs's API documentation and adds it. ### ### Do I have to build a connector for Apptoto or LettrLabs? 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 Apptoto and LettrLabs 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.