Handwrite.io MCP server for AI agents and assistants

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Handwrite.io MCP or direct API to create card orders, choose handwriting styles, select stationery, and track deliveries through natural language.

Handwrite.io logoHandwrite.io
Api Key

Handwrite.io is a direct mail service for creating physical handwritten card orders. It helps teams send personal cards with selectable handwriting, stationery, and tracking.

4 Tools

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TOOL ROUTER PLAYGROUND
Handwrite.io
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TOOLS

Supported Tools

Every Handwrite.io action and event your agent gets out of the box.

Get Order

Get a Handwrite order by ID, including its current status, test or live environment, addresses, and proof images when available.

List Handwriting Styles

List the handwriting styles available to the connected Handwrite account, including the style ID required when sending cards and a preview URL.

List Stationery

List public stationery and custom stationery available to the connected Handwrite account, including the card ID required when sending cards and a preview URL.

Send Handwritten Cards

Create handwritten-card orders for one or more recipients.

SETUP GUIDE

Connect Handwrite.io MCP Tool with your Agent

1

Install Composio

typescript
npm install @composio/core ai @ai-sdk/mcp @ai-sdk/openai
Install the Composio SDK and your agent framework
2

Create a session with MCP enabled

typescript
import { Composio } from "@composio/core";

const composio = new Composio();
const { mcp } = await composio.create("your-user-id", {
  toolkits: ["handwrite"],
  mcp: true,
});
Create a session scoped to Handwrite.io and read its MCP URL and headers
3

Connect your agent to the MCP server

typescript
import { createMCPClient } from "@ai-sdk/mcp";
import { openai } from "@ai-sdk/openai";
import { generateText, stepCountIs } from "ai";

const client = await createMCPClient({
  transport: { type: "http", url: mcp.url, headers: mcp.headers },
});

const { text } = await generateText({
  model: openai("gpt-5.6-sol"),
  tools: await client.tools(),
  prompt: "Create a handwritten thank-you card order for Jane Doe at 123 Market St, San Francisco, CA 94105 using a friendly handwriting style and track the order status",
  stopWhen: stepCountIs(10),
});

console.log(text);
await client.close();
Pass the session's MCP URL and headers to your agent and run a Handwrite.io request
SETUP GUIDE

Connect Handwrite.io API Tool with your Agent

1

Install Composio

typescript
npm install @composio/core @composio/openai openai
Install the Composio SDK, the OpenAI provider, and the OpenAI SDK
2

Create a Composio session

typescript
import OpenAI from "openai";
import { Composio } from "@composio/core";
import { OpenAIResponsesProvider } from "@composio/openai";

const composio = new Composio({ provider: new OpenAIResponsesProvider() });
const client = new OpenAI();

const session = await composio.create("your-user-id", { toolkits: ["handwrite"] });
const tools = await session.tools();
Initialize Composio with the OpenAI Responses provider and create a session scoped to Handwrite.io
3

Run Handwrite.io tools with your agent

typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "Create a handwritten thank-you card order for Jane Doe at 123 Market St, San Francisco, CA 94105 using a friendly handwriting style and track the order status" }],
});

while (response.output.some((o) => o.type === "function_call")) {
  const outputs = await composio.provider.handleToolCalls(session, response.output);
  response = await client.responses.create({
    model: "gpt-5.6-sol",
    tools,
    previous_response_id: response.id,
    input: outputs,
  });
}

console.log(response.output_text);
Send a request, execute the Handwrite.io tool calls through the session, and print the final answer

Why Use Composio?

AI Native Handwrite.io Integration

  • Supports both Handwrite.io MCP and direct API based integrations
  • Structured, LLM-friendly schemas for reliable handwritten card order creation
  • Rich coverage for creating card orders, selecting styles, and tracking physical mail status

Managed Auth

  • Securely store Handwrite.io API keys without hard-coding them into your agent
  • Central place to manage, scope, and revoke Handwrite.io access
  • Per user and per environment credentials, so your outreach workflows stay clean and safe

Agent Optimized Design

  • Tools are tuned using real error and success rates to improve reliability over time
  • Clear inputs for card messages, recipients, handwriting styles, stationery, and order tracking
  • Comprehensive execution logs so you always know what ran, when, and on whose behalf

Enterprise Grade Security

  • Fine-grained RBAC so you control which agents and users can access Handwrite.io
  • Scoped, least privilege access to Handwrite.io card creation and tracking workflows
  • Full audit trail of agent actions to support review, compliance, and campaign QA
FAQ

Frequently asked questions

Yes, Handwrite.io requires you to configure your own API key. Once set up, Composio handles secure credential storage and API request handling for you.

Yes! Composio's Tool Router enables agents to use multiple toolkits. Learn more.

Yes. Composio is SOC 2 Type II compliant and is built to keep your Handwrite.io connection and credentials secure. OAuth tokens and API keys are encrypted, and sensitive customer data is protected at rest and in transit.

Composio also undergoes independent security testing and continuously monitors its systems for security threats. You can review the latest reports and policies in the Composio Trust Center.

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

Create the key in your Handwrite.io account settings, then paste it once on Composio's connection page. Composio stores it encrypted and uses it only for the Handwrite.io actions your agent runs. Nobody else in your workspace can read it, and you can revoke it inside Handwrite.io at any time.

When you connect a Handwrite.io account through Composio, every action runs under that account, so anything the agent creates, sends, or changes shows up in Handwrite.io as done by you. Keep an approval step in your prompt for actions with side effects, such as sending or deleting, and have the agent draft first.

Whatever the credentials you connect allow inside Handwrite.io. If Handwrite.io lets you scope a key to specific permissions, create a scoped one so the agent can only do what you intend. You can revoke the key inside Handwrite.io at any time.

Yes. Composio supports multiple connected accounts for the same app, and that works in Claude, ChatGPT, or any other assistant you connect through Composio. Give each Handwrite.io connection a name such as work or personal, and the assistant uses the one you mention in the request. Each account keeps its own credentials and nothing is merged.

The connection stops working the moment Handwrite.io rejects the old key. Create a new key in Handwrite.io and reconnect the account from the Composio dashboard or by asking your agent to reconnect Handwrite.io. Nothing else changes.

Composio's free Hobby plan includes 100,000 tool calls per month with no credit card, which covers most personal Handwrite.io use. Paid plans add higher limits and team features. Your Handwrite.io plan and its API limits still apply as usual.

Built-in connectors usually give one AI access to a limited set of apps. Many people use Composio because it lets their AI connect to more apps than it normally supports, or connect to multiple accounts for the same app (e.g. connect Claude to multiple Handwrite.io accounts).

With Composio, you connect Handwrite.io once and then use it across different AI assistants without setting it up separately in each one. Connect your apps to Composio once, then connect Composio to whichever AI you use, whether that's Claude, ChatGPT, Hermes, or your own custom assistant.

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