> ## Documentation Index
> Fetch the complete documentation index at: https://docs.corsair.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Handwrytten plugin

> Automated handwritten notes, cards, and direct mail platform using robotics with real pens.

Use **Handwrytten** through Corsair: one client, typed API calls.

Authenticate with your Handwrytten API key generated on the [Integrations](https://app.handwrytten.com/integrations) page.
Requests pass the key directly in the `Authorization` header without a `Bearer` prefix. You can toggle Test Mode in your Handwrytten dashboard during development to simulate orders without fulfillment charges.

**What you get:**

* 55 typed API operations

## Setup

**1. Install**

```bash npm theme={null}
npm install corsair @corsair-dev/handwrytten better-sqlite3
npm install --save-dev @types/better-sqlite3
```

```bash yarn theme={null}
yarn add corsair @corsair-dev/handwrytten better-sqlite3
yarn add --dev @types/better-sqlite3
```

```bash pnpm theme={null}
pnpm install corsair @corsair-dev/handwrytten better-sqlite3
pnpm install --save-dev @types/better-sqlite3
```

```bash bun theme={null}
bun add corsair @corsair-dev/handwrytten better-sqlite3
bun add --dev @types/better-sqlite3
```

**2. Add the plugin**

```ts corsair.ts theme={null}
import Database from 'better-sqlite3';
import { createCorsair } from 'corsair';
import { handwrytten } from '@corsair-dev/handwrytten';

export const corsair = createCorsair({
	plugins: [
		handwrytten(),
	],
	database: new Database('corsair.db'),
	kek: process.env.CORSAIR_KEK!,
	multiTenancy: true,
	hub: {
		projectApiKey: process.env.CORSAIR_API_KEY!,
		signingSecret: process.env.CORSAIR_SIGNING_SECRET!,
	},
});
```

With `multiTenancy: true`, scope calls with `corsair.withTenant(id)`. See [Quick start](https://docs.corsair.dev/quick-start.md) for KEK + Hub keys, and [Multi-tenancy](https://docs.corsair.dev/concepts/multi-tenancy.md) for account isolation.

**3. Choose authentication**

> [tab] API Key (Recommended)
>
> Store the Handwrytten API key before the first call: `pnpm corsair setup --plugin=handwrytten --tenant=acme api_key=<your-key>` (leave out `--tenant` without `multiTenancy`), or pass it as `key` in the plugin options. With Hub, each tenant enters their own key on the connect page. See [API key auth](https://docs.corsair.dev/concepts/api-key).
>
> ```ts theme={null}
> handwrytten()
> ```
>
> More: [API Key](https://docs.corsair.dev/concepts/api-key)

**4. Connect a tenant**

Mint a connect link and send the tenant to it. Hub hosts the page and delivers the result to your app — see [Connect / OAuth](https://docs.corsair.dev/management/connect).

```ts theme={null}
const { connectUrl } = await corsair.manage.connect.createLink({
	plugin: 'handwrytten',
	tenantId: 'acme',
});
// redirect the user's browser to connectUrl
```

## Example API calls

**List available greeting cards**

```ts theme={null}
const tenant = corsair.withTenant('acme');
await tenant.handwrytten.api.cards.list({});
```

**Send a personalized handwritten note**

```ts theme={null}
const tenant = corsair.withTenant('acme');
await tenant.handwrytten.api.orders.sendSingle({
	card_id: 101,
	message: 'Thank you for your partnership and support!',
	font_label: 'Chill Charity',
	sender_address1: '1 Market St',
	sender_city: 'Austin',
	sender_zip: '78701',
	recipient_first_name: 'Jane',
	recipient_last_name: 'Doe',
	recipient_address1: '123 Main St',
	recipient_city: 'Austin',
	recipient_state: 'TX',
	recipient_zip: '78701',
});
```

See the full list on the [API](https://docs.corsair.dev/plugins/handwrytten/api.md) page.

## What's next

> [card] [API reference](https://docs.corsair.dev/plugins/handwrytten/api.md)
>
> Every `handwrytten.api.*` operation with input and output types.

> [card] [Connect / OAuth](https://docs.corsair.dev/management/connect)
>
> createLink, Hub delivery, and tenant connect flows.

> [card] [Use with agents](https://docs.corsair.dev/mcp-adapters/mcp-adapters)
>
> Expose this plugin's operations as MCP tools.


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