# Handwrytten AI integration on Definable

> Automate your handwritten correspondence.

## What this connects

Automate your handwritten correspondence. Send real notes with your message written in pen by robots.

Vendor: https://www.handwrytten.com/

## Tools available

**48** tools available. First 12:

- `HANDWRYTTEN_ADD_RECIPIENT` — Add Recipient — Tool to add a recipient address to the user's addressbook in Handwrytten. Use when you need to store a new recipient for sending handwritten cards.
- `HANDWRYTTEN_CALCULATE_ORDER_TAXES` — Calculate Order Taxes — Tool to calculate taxes for Handwrytten basket orders. Use without any parameters for basket orders, or optionally provide order details to calculate taxes for a specific order (experimental).
- `HANDWRYTTEN_CHECK_AUTH` — Check Authentication — Tool to verify API key authentication validity for Handwrytten. Use when you need to test if the API credentials are valid and properly configured.
- `HANDWRYTTEN_CLEAR_BASKET` — Clear Basket — Tool to clear all items from the shopping basket. Use when you need to empty the basket and remove all pending items before starting a new order or canceling the current selection.
- `HANDWRYTTEN_CREATE_TEMPLATE` — Create Template — Tool to create a new template for the current user. Use when you need to save a new message template for sending handwritten cards.
- `HANDWRYTTEN_CREATE_USER_ADDRESS` — Create User Address — Tool to create a new user address in Handwrytten. Use when adding a new return address to a user's profile for sending handwritten cards.
- `HANDWRYTTEN_DELETE_CUSTOM_IMAGE` — Delete Custom Image — Tool to delete a custom image/logo from Handwrytten. Use when you need to remove a previously uploaded custom image or logo from your account.
- `HANDWRYTTEN_DELETE_RECIPIENT` — Delete Recipient Address — Tool to delete one or more recipient addresses from user's profile. Use when you need to remove saved recipient addresses. Provide either address_id for single deletion or address_ids for bulk deletion.
- `HANDWRYTTEN_DELETE_TEMPLATE` — Delete Template — Tool to delete a user's template by its ID. Use when you need to remove a saved template from the user's account.
- `HANDWRYTTEN_GET_BASKET_ALL_NEW` — Get Basket (New Method) — Tool to retrieve the user's basket using the new method. Use when you need to fetch the current state of the shopping basket with all items, billing information, and totals.
- `HANDWRYTTEN_GET_BASKET_COUNT` — Get Basket Count — Tool to retrieve the count of items currently in the basket. Use when you need to check how many items are in the shopping basket before proceeding with checkout or additional operations.
- `HANDWRYTTEN_GET_BASKET_ITEM` — Get Basket Item — Tool to retrieve a basket item by its ID from Handwrytten. Use when you need to get details of a specific basket item.

## Auth

Auth schemes: `API_KEY`.

## How agents use Handwrytten

Inside a Definable workflow, Handwrytten is one of the tools the **Distributor specialist** can call. Example coordination patterns:

- **Researcher → Handwrytten** — the Researcher (GPT-5.5) pulls context from Handwrytten (records, threads, documents), synthesises findings, and briefs the rest of the team.
- **Writer → Distributor → Handwrytten** — the Writer (Claude Opus 4.7) drafts copy in brand voice, the Verifier passes it, then the Distributor writes the result into Handwrytten (create record, post message, draft email).
- **Designer / Engineer → Distributor → Handwrytten** — the Designer ships an asset or the Engineer ships a code change, the Distributor delivers it via Handwrytten (attach file, open PR comment, post status).

The Verifier checks every Handwrytten call. On rate limit, schema drift, or auth refresh it self-heals and retries — the workflow completes without manual intervention.

## Categories

- marketing automation — https://definable.ai/apps/category/marketing-automation/
- customer appreciation — https://definable.ai/apps/category/customer-appreciation/

## Related

- HTML page: https://definable.ai/apps/handwrytten/
- Same category (marketing automation): https://definable.ai/apps/category/marketing-automation/
- All integrations: https://definable.ai/apps/
- Workflow (multi-agent loop): https://definable.ai/workflow/
- Apps llms.txt index: https://definable.ai/llms-apps.txt