Integration
Connect Handwrytten and Vapi
When Address List fires in Handwrytten, your agent runs Add assistant in Vapi, or New Assistant in Vapi to Add Order to Basket in Handwrytten. Describe the whole flow and it is built, tested on every scenario and kept running.
What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it.
Build solutions, not workarounds.
What do you want Handwrytten and Vapi to do together?
Ask the assistant
Connect your AI client
Give your AI client this address.
https://mcp.apiant.aiOne 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.aiStart Claude Code there, approve the server, and sign in in the browser page it opens.
Claude Code guide (opens in a new tab)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)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)Zed
Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server.
Setup guide (opens in a new tab)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)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)Example flows
What Handwrytten and Vapi can do together
From Handwrytten to Vapi
When Address List in Handwrytten
then Add assistant in Vapi
When Address List in Handwrytten
then Add phone number in Vapi
From Vapi to Handwrytten
When New Assistant in Vapi
then Add Order to Basket in Handwrytten
When New Call in Vapi
then Create Contact in Handwrytten
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 Handwrytten and Vapi
Triggers and actions 4 triggers · 28 actions
Trigger
Address ListTriggers when Recipient Addresses are needed.
Action
Add Order to BasketAdds an order to a basket. If sending multiple cards at once, use this for each order, then check-out with Send Basket
Action
Create ContactCreates a new address book entry for the Handwrytten address book. (Note: other zaps don't really use the address book, but the rest of Handwrytten does.).
Action
Create Custom CardCreates a new custom 5x7 card with full bleed cover, using specified images, fonts, and logos.
Action
Empty BasketClears your basket.
Action
Find ContactFinds a contact in your address book.
Action
Update ContactUpdates an entry in the Handwrytten address book.
Action
Upload Custom ImageAdds an image to Handwrytten for use in custom card designs.
Trigger
New AssistantTriggers when a new assistant is created in your Vapi organization.
Trigger
New CallTriggers when a new call is created in Vapi, optionally limited to one assistant or phone number.
Trigger
New FileTriggers when a new file is uploaded to your Vapi account.
Action
Add assistantCreates a new Vapi voice assistant with its model, voice, transcriber, first message and call behavior.
Action
Add phone numberAdds 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 squadCreates a squad: a group of assistants that hand a call off to one another, starting with the first member.
Action
Add toolCreates a tool in Vapi (for example a function, end-call, transfer-call or API-request tool) that assistants can use during calls.
Action
Create CallStarts 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 ChatSends a message to a Vapi assistant or squad as a text chat and returns the chat, including the assistant's reply messages.
Action
Delete assistantDeletes an assistant from your Vapi account and returns the deleted assistant.
Action
Delete Call DataDeletes a call and its data, including recordings, and returns the deleted call.
Action
Delete ChatDeletes a chat from your Vapi account and returns the deleted chat's details.
Action
Delete FileDeletes a file from your Vapi account.
Action
Find CallFinds calls matching a call id, assistant, phone number, or created/updated date range. Returns up to 1000 matching calls.
Action
Get assistantReturns a Vapi assistant's full configuration, including its model, voice, transcriber and first message.
Action
Get fileReturns a file uploaded to Vapi, including its name, size, type, processing status and download URL.
Action
List assistantsReturns the voice assistants in your Vapi account, optionally filtered by when they were created or last updated.
Action
List chatsReturns the chats in your Vapi account, optionally filtered by assistant, squad, session or creation/update date.
Action
List filesReturns the files uploaded to your Vapi account, optionally filtered by purpose.
Action
List phone numbersReturns the phone numbers in your Vapi account, optionally filtered by when they were created or updated.
Action
List toolsReturns the tools configured in your Vapi account, optionally filtered by when they were created or updated.
Action
Update CallUpdates the name of an existing Vapi call.
Action
Update phone numberUpdates a Vapi phone number's name, the assistant, squad or workflow that answers it, and its provider settings.
Action
Upload FileUploads a file to Vapi, for use by assistants or knowledge bases, and returns the stored file record.
No trigger or action matches that. Ask your agent to add it: it reads the API documentation and builds what you describe.
Each app on its own
Reviews
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Questions
Handwrytten and Vapi, answered
What can start an automation from Handwrytten?
Any of Handwrytten's 1 trigger in the catalog, including Address List. Describe the moment in plain language and your agent picks the right one.
What can your agent do in Vapi when something happens in Handwrytten?
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 Handwrytten?
Yes. When something happens in Vapi, your agent can act in Handwrytten too. This page covers both directions: Vapi's triggers and Handwrytten's actions are listed here as well.
Do I have to build a connector for Handwrytten 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 Handwrytten 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.