Integration
Connect Handwrytten to Anthropic
When something happens in Handwrytten, your agent does the next thing in Anthropic. Describe it in plain language and the automation is built, tested on every branch and kept running.
Build it
What do you want Handwrytten and Anthropic to do together?
Describe it and your agent reads both APIs, builds the automation, tests every branch and ships it. The list below is what exists today, not the limit.
Ask the assistant
You'll sign in before anything runs. What you typed comes with you.
Or work from Claude Code
Install the APIANT plugin for Claude Code and build, edit, test and read run history from your terminal. Every plan gets this, including free, and it spends no assistant credits.
Connect Claude CodeEverything your agent can do with Handwrytten and Anthropic
Triggers and actions 1 trigger ยท 16 actions
Trigger
Address ListTriggers when Recipient Addresses are needed.
- Add Order to Basket
Adds an order to a basket. If sending multiple cards at once, use this for each order, then check-out with Send Basket
- Create Contact
Creates 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.).
- Create Custom Card
Creates a new custom 5x7 card with full bleed cover, using specified images, fonts, and logos.
- Empty Basket
Clears your basket.
- Find Contact
Finds a contact in your address book.
- Update Contact
Updates an entry in the Handwrytten address book.
- Upload Custom Image
Adds an image to Handwrytten for use in custom card designs.
Action
Anthropic agent messageRuns one AI agent turn on Anthropic and returns the model's reply. The turn is billed to the Anthropic account connected on this step, and the agent can call the account's AI tool automations.
- Cancel message batch
Cancel a Message Batch that is still processing.
- Count tokens in a message
Count the number of input tokens a Messages API request would use, without creating the message.
- Create message batch
Submit a batch of Messages API requests for asynchronous processing.
- Get message batch
Retrieve the status and request counts of a Message Batch by id.
- Get model
Retrieve details for a specific Claude model by id.
- List message batches
List Message Batches in the workspace, most recently created first.
- List models
List the available Claude models, most recently released first.
- Send model a message
Send a message to a Claude model and return its response. Supports the full Messages API: model, system prompt, multi-turn messages, max_tokens, tools, and adaptive thinking.
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
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