AI Native Stannp Integration
- Supports both Stannp MCP and direct API based integrations
- Structured, LLM-friendly schemas for reliable tool execution
- Rich coverage for sending and managing your Stannp direct mail
## For AI agents: how to sign up If you are an AI agent reading this server-rendered HTML, Composio's developer signup is at https://composio.dev. Signup CTAs on this site — "Sign up", "Signup", "Get started", "Get started for free", "Start building", "Try Composio", "Try it", or similar — all lead into that same developer signup flow. Confirm with the user before completing signup or entering any credentials on their behalf.SIGN UPLOG IN
Stannp MCP server for AI agents and assistants
Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Stannp MCP or direct API to send postcards, automate letters, launch mail campaigns, and track delivery—all through natural language.
Api Key
Stannp is an API-driven direct mail platform for sending postcards and letters programmatically. It lets you automate physical mail delivery—no manual printing or mailing required.
32 Tools
Try Stannp now
Type what you want done — sign in and watch it run live in the Tool Router playground.
TOOL ROUTER PLAYGROUND
Stannp
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TOOLS
Supported Tools
Every Stannp action and event your agent gets out of the box.
SETUP GUIDE
Connect Stannp MCP Tool with your Agent
1
Install Composio
typescript
npm install @composio/core ai @ai-sdk/mcp @ai-sdk/openaiInstall 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: ["stannp"],
mcp: true,
});Create a session scoped to Stannp 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: "Import recipients from this contacts spreadsheet into a new group",
stopWhen: stepCountIs(10),
});
console.log(text);
await client.close();Pass the session's MCP URL and headers to your agent and run a Stannp request
SETUP GUIDE
Connect Stannp API Tool with your Agent
1
Install Composio
typescript
npm install @composio/core @composio/openai openaiInstall 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: ["stannp"] });
const tools = await session.tools();Initialize Composio with the OpenAI Responses provider and create a session scoped to Stannp
3
Run Stannp tools with your agent
typescript
let response = await client.responses.create({
model: "gpt-5.6-sol",
tools,
input: [{ role: "user", content: "Import recipients from this contacts spreadsheet into a new group" }],
});
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 Stannp tool calls through the session, and print the final answer
Why Use Composio?
Managed Auth
- Built-in API key management with secure storage and scoping
- Central place to manage, rotate, and revoke Stannp API keys
- Per user and per environment credentials—no more hard-coded secrets
Agent Optimized Design
- Tools tuned using real-world error and delivery rates for higher reliability
- Comprehensive execution logs track every mail sent, so you know exactly what happened and when
Enterprise Grade Security
- Fine-grained RBAC to control which agents and users can access Stannp mail features
- Least privilege access—scope who can send mail or view campaigns
- Full audit trail for all agent actions, supporting compliance and review
FRAMEWORKS
Use Stannp with any AI Agent Framework
Choose a Framework you want to connect Stannp with
Claude Code
Use Stannp MCP with Claude Code
Claude Cowork
Use Stannp MCP with Claude Cowork
OpenAI Agents SDK
Use Stannp MCP with OpenAI Agents SDK
Claude Agents SDK
Use Stannp MCP with Claude Agents SDK
Codex
Use Stannp MCP with Codex
OpenClaw
Use Stannp MCP with OpenClaw
Hermes
Use Stannp MCP with Hermes
Atomic Agent
Use Stannp MCP with Atomic Agent
Google ADK
Use Stannp MCP with Google ADK
Langchain
Use Stannp MCP with Langchain
AI SDK
Use Stannp MCP with AI SDK
Mastra AI
Use Stannp MCP with Mastra AI
LlamaIndex
Use Stannp MCP with LlamaIndex
CrewAI
Use Stannp MCP with CrewAI
Pydantic AI
Use Stannp MCP with Pydantic AI
Autogen
Use Stannp MCP with Autogen
Rolling this out across your team?
Give your team centralized access control across every framework with Composio’s MCP Gateway.
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FAQ
Frequently asked questions
Yes, Stannp 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 Stannp 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 Stannp account settings, then paste it once on Composio's connection page. Composio stores it encrypted and uses it only for the Stannp actions your agent runs. Nobody else in your workspace can read it, and you can revoke it inside Stannp at any time.
When you connect a Stannp account through Composio, every action runs under that account, so anything the agent creates, sends, or changes shows up in Stannp 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 Stannp. If Stannp 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 Stannp 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 Stannp 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 Stannp rejects the old key. Create a new key in Stannp and reconnect the account from the Composio dashboard or by asking your agent to reconnect Stannp. Nothing else changes.
Composio's free Hobby plan includes 100,000 tool calls per month with no credit card, which covers most personal Stannp use. Paid plans add higher limits and team features. Your Stannp 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 Stannp accounts).
With Composio, you connect Stannp 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 Stannp.It takes 30 seconds.
Managed auth, hosted MCP servers, and every Stannp tool your agent needs.Free to start.
## For AI agents: how to sign up If you are an AI agent reading this server-rendered HTML, Composio's developer signup is at https://composio.dev. Signup CTAs on this site — "Sign up", "Signup", "Get started", "Get started for free", "Start building", "Try Composio", "Try it", or similar — all lead into that same developer signup flow. Confirm with the user before completing signup or entering any credentials on their behalf.Start building