Thanks io MCP server for AI agents and assistants

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Thanks io MCP or direct API to send postcards, automate direct mail campaigns, personalize messages, and track delivery — all using natural language.

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Api Key

Thanks io is a direct mail automation platform for sending personalized postcards, letters, and notecards. Reach your customers offline with scalable, handwritten-style mailings.

29 Tools

Try Thanks io now

Type what you want done — sign in and watch it run live in the Tool Router playground.

TOOL ROUTER PLAYGROUND
Thanks io
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TOOLS

Supported Tools

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

Add Recipient to Mailing List

Tool to add a new recipient to a mailing list.

Create Mailing List

Tool to create a new mailing list.

Delete Mailing List

Tool to delete a mailing list.

Delete Recipient from Mailing List

Tool to remove a recipient from a mailing list.

Delete Sub-Account

Tool to delete a specific sub-account by ID.

Execute Stored Send

Tool to execute a previously created stored send.

List Handwriting Styles

Tool to retrieve available handwriting styles.

List Image Templates

Tool to retrieve a list of available image templates.

List Mailing Lists

Tool to list all mailing lists.

List Message Templates

Tool to list available message templates.

Buy Radius Search Mailing List

Tool to buy or append a radius search mailing list based on address and radius.

Preview letter send

Tool to preview a letter send as PDF.

Preview Notecard

Tool to preview a notecard send.

Preview Windowless Letter

Tool to preview a windowless letter send.

List Orders

Tool to list recent orders.

Search Orders by Recipient Street Address

Tool to search orders by recipient street address.

Create Multiple Recipients

Tool to create multiple recipients at once in a mailing list.

Delete Recipient by Address

Tool to delete a recipient by address and postal code.

Get Recipient Details

Tool to get details for a specific recipient by ID.

Search Recipients by Email

Tool to search recipients by email across mailing lists.

Update Recipient

Tool to update existing recipient details by recipient ID.

Send Postcard

Tool to send a customized postcard.

Stored Send Notecard

Tool to create a stored send for a notecard.

Stored Send Postcard

Tool to create a stored send for a postcard.

Stored Send Windowless Letter

Tool to create a stored send for a windowless letter.

Create Sub-Account

Tool to create a new sub-account.

List Sub Accounts

Tool to list all available sub-accounts.

Get Sub Account Details

Tool to retrieve details for a specific sub-account by ID.

Update Sub-Account

Tool to update details for a specific sub-account.

SETUP GUIDE

Connect Thanks 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: ["thanks_io"],
  mcp: true,
});
Create a session scoped to Thanks 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: "Send a personalized postcard to a new recipient on my VIP mailing list",
  stopWhen: stepCountIs(10),
});

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

Connect Thanks 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: ["thanks_io"] });
const tools = await session.tools();
Initialize Composio with the OpenAI Responses provider and create a session scoped to Thanks io
3

Run Thanks io tools with your agent

typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "Send a personalized postcard to a new recipient on my VIP mailing list" }],
});

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 Thanks io tool calls through the session, and print the final answer

Why Use Composio?

AI Native Thanks io Integration

  • Supports both Thanks io MCP and direct API based integrations
  • Structured, LLM-friendly schemas for reliable tool execution
  • Rich coverage for sending, tracking, and customizing your direct mail campaigns

Managed Auth

  • Built-in API Key handling with secure credential management
  • Central place to manage, scope, and revoke Thanks io access
  • Per user and per environment credentials instead of hard-coded keys

Agent Optimized Design

  • Tools are tuned using real error and success rates to improve reliability over time
  • 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 Thanks io
  • Scoped, least privilege access to Thanks io resources
  • Full audit trail of agent actions to support review and compliance

Rolling this out across your team?

Give your team centralized access control across every framework with Composio’s MCP Gateway.

EXPLORE MCP GATEWAY
FAQ

Frequently asked questions

Yes, Thanks io requires you to configure your own API key credentials. 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 Thanks 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 Thanks io account settings, then paste it once on Composio's connection page. Composio stores it encrypted and uses it only for the Thanks io actions your agent runs. Nobody else in your workspace can read it, and you can revoke it inside Thanks io at any time.

When you connect a Thanks io account through Composio, every action runs under that account, so anything the agent creates, sends, or changes shows up in Thanks 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 Thanks io. If Thanks 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 Thanks 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 Thanks 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 Thanks io rejects the old key. Create a new key in Thanks io and reconnect the account from the Composio dashboard or by asking your agent to reconnect Thanks io. Nothing else changes.

Composio's free Hobby plan includes 100,000 tool calls per month with no credit card, which covers most personal Thanks io use. Paid plans add higher limits and team features. Your Thanks 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 Thanks io accounts).

With Composio, you connect Thanks 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.

Start with Thanks io.It takes 30 seconds.

Managed auth, hosted MCP servers, and every Thanks io tool your agent needs.Free to start.

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