AI Native Lob Integration
- Supports both Lob MCP and direct API based integrations
- Structured, LLM-friendly schemas for reliable tool execution
- Rich coverage for reading, writing, and querying your Lob data
## 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.
## 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.DEVELOPER PLATFORM
Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Lob MCP or direct API to send letters, validate addresses, track mail, and manage templates through natural language.
Lob is a direct mail automation and address verification platform for businesses. It streamlines sending physical mail and validating addresses at scale with a simple API.
Type what you want done — sign in and watch it run live in the Tool Router playground.
Every Lob action and event your agent gets out of the box.
npm install @composio/core ai @ai-sdk/openai @ai-sdk/mcpimport { Composio } from '@composio/core';
const composio = new Composio({ apiKey: 'your-api-key' });
const session = await composio.create('your-user-id');
console.log(`Tool Router session created: ${session.mcp.url}`);import { openai } from '@ai-sdk/openai';
import { experimental_createMCPClient as createMCPClient } from '@ai-sdk/mcp';
import { generateText } from 'ai';
const client = await createMCPClient({
transport: {
type: 'http',
url: session.mcp.url,
headers: {
'x-api-key': 'your-composio-api-key',
},
},
});
const tools = await client.tools();
const { text } = await generateText({
model: openai('gpt-4o'),
tools,
messages: [{
role: 'user',
content: 'Track delivery status for letter sent to 456 Oak Ave, Austin, TX'
}],
maxSteps: 5,
});
console.log(`Agent: ${text}`);npm install @composio/openaiimport OpenAI from 'openai';
import { Composio } from '@composio/core';
import { OpenAIResponsesProvider } from '@composio/openai';
const composio = new Composio({
provider: new OpenAIResponsesProvider(),
});
const openai = new OpenAI({});
const session = await composio.create('your-user-id');const tools = session.tools;
const response = await openai.responses.create({
model: 'gpt-4.1',
tools: tools,
input: [{
role: 'user',
content: 'Send a letter to 123 Main St, New York, NY with the attached PDF.'
}],
});
const result = await composio.provider.handleToolCalls(
'your-user-id',
response.output
);
console.log(result);Choose a Framework you want to connect Lob with
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Notion is a collaborative workspace for notes, docs, wikis, and tasks. It streamlines team knowledge, project tracking, and workflow customization in one place.
Airtable combines the flexibility of spreadsheets with the power of a database for easy project and data management. Teams use Airtable to organize, track, and collaborate with custom views and automations.
Asana is a collaborative work management platform for teams to organize and track projects. It streamlines teamwork, boosts productivity, and keeps everyone aligned on goals.
Managed auth, hosted MCP servers, and every Lob 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