How to integrate Documenso MCP with OpenAI Agents SDK

This guide walks you through connecting Documenso to the OpenAI Agents SDK using the Composio tool router. By the end, you'll have a working Documenso agent that can send a contract to client for signature, download the latest signed nda document, list all templates for onboarding paperwork through natural language commands. This guide will help you understand how to give your OpenAI Agents SDK agent real control over a Documenso account through Composio's Documenso MCP server. Before we dive in, let's take a quick look at the key ideas and tools involved.

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Documenso is an open-source platform for digital document signing and management. It streamlines sending, tracking, and signing paperwork online—no more manual signatures or printing.

77 Tools

Introduction

This guide walks you through connecting Documenso to the OpenAI Agents SDK using the Composio tool router. By the end, you'll have a working Documenso agent that can send a contract to client for signature, download the latest signed nda document, list all templates for onboarding paperwork through natural language commands.

This guide will help you understand how to give your OpenAI Agents SDK agent real control over a Documenso account through Composio's Documenso MCP server.

Before we dive in, let's take a quick look at the key ideas and tools involved.

Also integrate Documenso with

Claude Agent SDKClaude CodeClaude CoworkCodexOpenClawHermesCLIGoogle ADKLangChainVercel AI SDKMastra AILlamaIndexCrewAI

TL;DR

Here's what you'll learn:
  • Get and set up your OpenAI and Composio API keys
  • Install the necessary dependencies
  • Initialize Composio and create a Tool Router session for Documenso
  • Configure an AI agent that can use Documenso as a tool
  • Run a live chat session where you can ask the agent to perform Documenso operations

What is OpenAI Agents SDK?

The OpenAI Agents SDK is a lightweight framework for building AI agents that can use tools and maintain conversation state. It provides a simple interface for creating agents with hosted MCP tool support.

Key features include:

  • Hosted MCP Tools: Connect to external services through hosted MCP endpoints
  • SQLite Sessions: Persist conversation history across interactions
  • Simple API: Clean interface with Agent, Runner, and tool configuration
  • Streaming Support: Real-time response streaming for interactive applications

What is the Documenso MCP server, and what's possible with it?

The Documenso MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Documenso account. It provides structured and secure access to your electronic signature workflows, so your agent can create documents, distribute them for signing, manage templates, and download signed files automatically on your behalf.

  • Automated document creation and duplication: Prompt your agent to generate new documents or make exact copies of existing ones for rapid workflow setup.
  • Seamless document distribution for signatures: Let your agent send documents to one or more recipients, kicking off secure e-signature flows without manual intervention.
  • Template management and retrieval: Ask your agent to list, fetch, or delete document templates, keeping your signing processes organized and up-to-date.
  • Download and access signed documents: Have your agent retrieve finalized, signed PDFs automatically for seamless archiving or sharing.
  • Streamlined document organization: Direct your agent to move documents between personal and team spaces, or remove unnecessary fields to keep everything tidy and current.

What is the Composio tool router, and how does it fit here?

What is Composio SDK?

Composio's Composio SDK helps agents find the right tools for a task at runtime. You can plug in multiple toolkits (like Gmail, HubSpot, and GitHub), and the agent will identify the relevant app and action to complete multi-step workflows. This can reduce token usage and improve the reliability of tool calls. Read more here: Getting started with Composio SDK

The tool router generates a secure MCP URL that your agents can access to perform actions.

How the Composio SDK works

The Composio SDK follows a three-phase workflow:

  1. Discovery: Searches for tools matching your task and returns relevant toolkits with their details.
  2. Authentication: Checks for active connections. If missing, creates an auth config and returns a connection URL via Auth Link.
  3. Execution: Executes the action using the authenticated connection.

Step-by-step Guide

Step by step09 STEPS
1

Prerequisites

Before starting, make sure you have:
  • Composio API Key and OpenAI API Key
  • Primary know-how of OpenAI Agents SDK
  • A live Documenso project
  • Some knowledge of Python or Typescript
2

Getting API Keys for OpenAI and Composio

OpenAI API Key
  • Go to the OpenAI dashboard and create an API key. You'll need credits to use the models, or you can connect to another model provider.
  • Keep the API key safe.
Composio API Key
3

Install dependencies

npm install @composio/openai-agents @openai/agents dotenv

Install the Composio SDK and the OpenAI Agents SDK.

4

Set up environment variables

bash
OPENAI_API_KEY=sk-...your-api-key
COMPOSIO_API_KEY=your-api-key
USER_ID=composio_user@gmail.com

Create a .env file and add your OpenAI and Composio API keys.

5

Import dependencies

import 'dotenv/config';
import { Composio } from '@composio/core';
import { OpenAIAgentsProvider } from '@composio/openai-agents';
import { Agent, hostedMcpTool, run, OpenAIConversationsSession } from '@openai/agents';
import * as readline from 'readline';
What's happening:
  • You're importing all necessary libraries.
  • The Composio and OpenAIAgentsProvider classes are imported to connect your OpenAI agent to Composio tools like Documenso.
6

Set up the Composio instance

dotenv.config();

const composioApiKey = process.env.COMPOSIO_API_KEY;
const userId = process.env.USER_ID;

if (!composioApiKey) {
  throw new Error('COMPOSIO_API_KEY is not set. Create a .env file with COMPOSIO_API_KEY=your_key');
}
if (!userId) {
  throw new Error('USER_ID is not set');
}

// Initialize Composio
const composio = new Composio({
  apiKey: composioApiKey,
  provider: new OpenAIAgentsProvider(),
});
What's happening:
  • dotenv.config() loads your .env file so COMPOSIO_API_KEY and USER_ID are available as environment variables.
  • Creating a Composio instance using the API Key and OpenAIAgentsProvider class.
7

Create a Tool Router session

// Create Tool Router session for Documenso
const session = await composio.create(userId as string, {
  toolkits: ['documenso'],
});
const mcpUrl = session.mcp.url;

What is happening:

  • You give the Tool Router the user id and the toolkits you want available. Here, it is only documenso.
  • The router checks the user's Documenso connection and prepares the MCP endpoint.
  • The returned session.mcp.url is the MCP URL that your agent will use to access Documenso.
  • This approach keeps things lightweight and lets the agent request Documenso tools only when needed during the conversation.
8

Configure the agent

// Configure agent with MCP tool
const agent = new Agent({
  name: 'Assistant',
  model: 'gpt-5',
  instructions:
    'You are a helpful assistant that can access Documenso. Help users perform Documenso operations through natural language.',
  tools: [
    hostedMcpTool({
      serverLabel: 'tool_router',
      serverUrl: mcpUrl,
      headers: { 'x-api-key': composioApiKey },
      requireApproval: 'never',
    }),
  ],
});
What's happening:
  • We're creating an Agent instance with a name, model (gpt-5), and clear instructions about its purpose.
  • The agent's instructions tell it that it can access Documenso and help with queries, inserts, updates, authentication, and fetching database information.
  • The tools array includes a hostedMcpTool that connects to the MCP server URL we created earlier.
  • The headers object includes the Composio API key for secure authentication with the MCP server.
  • requireApproval: 'never' means the agent can execute Documenso operations without asking for permission each time, making interactions smoother.
9

Start chat loop and handle conversation

// Keep conversation state across turns
const conversationSession = new OpenAIConversationsSession();

// Simple CLI
const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout,
  prompt: 'You: ',
});

console.log('\nComposio Tool Router session created.');
console.log('\nChat started. Type your requests below.');
console.log("Commands: 'exit', 'quit', or 'q' to end\n");

try {
  const first = await run(agent, 'What can you help me with?', { session: conversationSession });
  console.log(`Assistant: ${first.finalOutput}\n`);
} catch (e) {
  console.error('Error:', e instanceof Error ? e.message : e, '\n');
}

rl.prompt();

rl.on('line', async (userInput) => {
  const text = userInput.trim();

  if (['exit', 'quit', 'q'].includes(text.toLowerCase())) {
    console.log('Goodbye!');
    rl.close();
    process.exit(0);
  }

  if (!text) {
    rl.prompt();
    return;
  }

  try {
    const result = await run(agent, text, { session: conversationSession });
    console.log(`\nAssistant: ${result.finalOutput}\n`);
  } catch (e) {
    console.error('Error:', e instanceof Error ? e.message : e, '\n');
  }

  rl.prompt();
});

rl.on('close', () => {
  console.log('\n👋 Session ended.');
  process.exit(0);
});
What's happening:
  • The program prints a session URL that you visit to authorize Documenso.
  • After authorization, the chat begins.
  • Each message you type is processed by the agent using run().
  • The responses are printed to the console.
  • Typing exit, quit, or q cleanly ends the chat.

Complete Code

Here's the complete code to get you started with Documenso and OpenAI Agents SDK:

import 'dotenv/config';
import { Composio } from '@composio/core';
import { OpenAIAgentsProvider } from '@composio/openai-agents';
import { Agent, hostedMcpTool, run, OpenAIConversationsSession } from '@openai/agents';
import * as readline from 'readline';

const composioApiKey = process.env.COMPOSIO_API_KEY;
const userId = process.env.USER_ID;

if (!composioApiKey) {
  throw new Error('COMPOSIO_API_KEY is not set. Create a .env file with COMPOSIO_API_KEY=your_key');
}
if (!userId) {
  throw new Error('USER_ID is not set');
}

// Initialize Composio
const composio = new Composio({
  apiKey: composioApiKey,
  provider: new OpenAIAgentsProvider(),
});

async function main() {
  // Create Tool Router session
  const session = await composio.create(userId as string, {
    toolkits: ['documenso'],
  });
  const mcpUrl = session.mcp.url;

  // Configure agent with MCP tool
  const agent = new Agent({
    name: 'Assistant',
    model: 'gpt-5',
    instructions:
      'You are a helpful assistant that can access Documenso. Help users perform Documenso operations through natural language.',
    tools: [
      hostedMcpTool({
        serverLabel: 'tool_router',
        serverUrl: mcpUrl,
        headers: { 'x-api-key': composioApiKey },
        requireApproval: 'never',
      }),
    ],
  });

  // Keep conversation state across turns
  const conversationSession = new OpenAIConversationsSession();

  // Simple CLI
  const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
    prompt: 'You: ',
  });

  console.log('\nComposio Tool Router session created.');
  console.log('\nChat started. Type your requests below.');
  console.log("Commands: 'exit', 'quit', or 'q' to end\n");

  try {
    const first = await run(agent, 'What can you help me with?', { session: conversationSession });
    console.log(`Assistant: ${first.finalOutput}\n`);
  } catch (e) {
    console.error('Error:', e instanceof Error ? e.message : e, '\n');
  }

  rl.prompt();

  rl.on('line', async (userInput) => {
    const text = userInput.trim();

    if (['exit', 'quit', 'q'].includes(text.toLowerCase())) {
      console.log('Goodbye!');
      rl.close();
      process.exit(0);
    }

    if (!text) {
      rl.prompt();
      return;
    }

    try {
      const result = await run(agent, text, { session: conversationSession });
      console.log(`\nAssistant: ${result.finalOutput}\n`);
    } catch (e) {
      console.error('Error:', e instanceof Error ? e.message : e, '\n');
    }

    rl.prompt();
  });

  rl.on('close', () => {
    console.log('\nSession ended.');
    process.exit(0);
  });
}

main().catch((err) => {
  console.error('Fatal error:', err);
  process.exit(1);
});

Conclusion

This was a starter code for integrating Documenso MCP with OpenAI Agents SDK to build a functional AI agent that can interact with Documenso.

Key features:

  • Hosted MCP tool integration through Composio's Tool Router
  • SQLite session persistence for conversation history
  • Simple async chat loop for interactive testing
You can extend this by adding more toolkits, implementing custom business logic, or building a web interface around the agent.
TOOLS

Supported Tools

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

Create Document Beta

Tool to create a new document using the beta endpoint that returns a presigned URL for file upload.

Create Document Field

Tool to create a single field for a document.

Create Document Fields (Bulk)

Tool to create multiple fields on a document in a single operation.

Create Document Recipient

Tool to create a single recipient for a document.

Create Document Recipients Bulk

Tool to create multiple recipients for a document at once.

Create Embedding Presign Token V2 Beta

Create a presign token for Documenso embedded authoring sessions.

Create Envelope

Tool to create a new envelope in Documenso.

Create Envelope Attachment

Create a new attachment for an envelope in Documenso.

Create Envelope Items Bulk

Tool to create multiple items for an envelope with optional file attachments.

Create Envelope Recipients Bulk

Tool to create multiple recipients for an envelope in bulk.

Create Folder

Create a new folder in Documenso to organize documents or templates.

Create Template Beta

Tool to create a new template using the beta endpoint that returns a presigned URL for file upload.

Create Template Field

Tool to create a single field for a template.

Create Template Fields (Bulk)

Tool to create multiple fields on a template in a single operation.

Create Template Recipient

Tool to create a single recipient for a template.

Create Template Recipients Bulk

Tool to create multiple recipients for a template at once.

Delete Document

Tool to delete a document.

Delete Document Attachment

Tool to delete an attachment from a document.

Delete Document Field

Tool to delete a single document field by ID.

Delete Document Fields

Tool to delete one or more fields from a document.

Delete Document Recipient

Tool to delete a recipient from a document.

Delete Envelope

Tool to permanently delete an envelope.

Delete Envelope Attachment

Tool to delete an attachment from an envelope.

Delete Envelope Field

Tool to delete a field from an envelope.

Delete Envelope Item

Tool to delete an item from an envelope.

Delete Envelope Recipient

Tool to delete a recipient from an envelope.

Delete Folder

Tool to permanently delete a folder.

Delete Template

Permanently delete a template by its ID.

Delete Template Direct Link

Delete a direct link for a template.

Delete Template Recipient

Tool to delete a recipient from a template.

Delete Template V2

Tool to permanently delete a template using the v2 API.

Distribute Document V2

Tool to distribute a document for signing.

Distribute Envelope

Tool to distribute an envelope to recipients for signing.

Download Envelope Item

Download an envelope item as PDF.

Download Signed Document

Download a completed/signed document as PDF.

Duplicate Document V2

Tool to duplicate a document.

Duplicate Envelope V2

Tool to duplicate an envelope with all its settings.

Duplicate Template

Tool to duplicate a template with all its settings.

Find Documents

Find documents based on search criteria with filtering and pagination.

Find Documents V2

Retrieve a paginated list of documents with optional filtering and sorting.

Find Envelopes

Tool to find envelopes based on search criteria, filters, and pagination.

Find Folders

Tool to find folders based on search criteria and filters.

Find Templates

Retrieve a paginated list of templates with optional filtering and search.

Get Document By ID

Retrieve complete information about a document by its ID.

Get Document Field

Tool to retrieve a document field by its ID.

Get Document Recipient

Tool to retrieve detailed information about a document recipient by their ID.

Get Documents By IDs

Retrieve multiple documents by their IDs in a single request.

Get Envelope Attachment

Tool to find all attachments for a specific envelope.

Get Envelope Audit Log

Tool to retrieve audit logs for an envelope.

Get Envelope By ID

Retrieve complete information about an envelope by its ID.

Get Envelope Field

Tool to fetch an envelope field by ID.

Get Envelope Recipient

Tool to retrieve detailed information about an envelope recipient by their ID.

Get Envelopes By IDs

Tool to retrieve multiple envelopes by their IDs.

Get Template By ID

Retrieve complete information about a template by its ID.

Get Template Field

Tool to fetch a template field by ID.

Get Template Recipient

Tool to retrieve detailed information about a template recipient by their ID.

Get Templates By IDs

Retrieve multiple templates by their IDs in a single request.

List Templates

Tool to list templates.

Move Document V2

Tool to move a document to a team.

Redistribute Document V2

Re-send signing request emails to specified recipients of a document.

Redistribute Envelope

Tool to redistribute an envelope to recipients who have not actioned it.

Remove Team Member V1

Remove a member from a Documenso team.

Update Document Attachment

Tool to update an existing document attachment.

Update Document Field

Tool to update a single document field's properties in Documenso v2 API.

Update Document Fields Bulk

Tool to update multiple document fields in a single operation.

Update Document Recipient V2

Tool to update a document recipient using the v2 API.

Update Document V2

Update document properties like title, visibility, and signing settings.

Update Envelope

Update envelope properties like title, visibility, and signing settings.

Update Envelope Attachment

Tool to update an existing envelope attachment.

Update Envelope Fields Bulk

Tool to update multiple envelope fields in a single request.

Update Envelope Items Bulk

Tool to update multiple envelope items in a single request.

Update Folder

Update properties of an existing folder including name, pinned status, parent folder, and visibility.

Update Template

Update template properties like title, visibility, and signing settings.

Update Template Fields Bulk

Tool to update multiple template fields in a single operation.

Update Template Recipient

Tool to update a template recipient.

Update Template Recipients Bulk

Tool to update multiple template recipients in a single API call.

Use Template (v2-beta)

Tool to create a document from a template.

FRAMEWORKS

How to build Documenso MCP Agent with another framework

Claude Agent SDK logo

Claude Agent SDK

Use Documenso MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use Documenso MCP with Claude Code

Claude Cowork logo

Claude Cowork

Use Documenso MCP with Claude Cowork

Codex logo

Codex

Use Documenso MCP with Codex

OpenClaw logo

OpenClaw

Use Documenso MCP with OpenClaw

Hermes logo

Hermes

Use Documenso MCP with Hermes

CLI logo

CLI

Use Documenso MCP with CLI

Google ADK logo

Google ADK

Use Documenso MCP with Google ADK

LangChain logo

LangChain

Use Documenso MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Documenso MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Documenso MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Documenso MCP with LlamaIndex

CrewAI logo

CrewAI

Use Documenso MCP with CrewAI

FAQ

Frequently asked questions

With a standalone Documenso MCP server, the agents and LLMs can only access a fixed set of Documenso tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Documenso and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. OpenAI Agents SDK fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Documenso tools.

Yes, absolutely. You can configure which Documenso scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Documenso data and credentials are handled as safely as possible.

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A lot of students tell us that the moment their connected tools start talking to each other inside Opennote feels almost magical. The agent just knows them, and it's immensely helped keep new users on the platform.

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Co-founder, Opennote

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CEO, Zams

As a solo builder, shipping fast is life or death. The only way I can outcompete incumbents is by outmanoeuvring them. Getting bogged down managing agent auth would have been a death sentence.

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Founder, Extra Thursday

Before Composio, adding tool integrations was slow and resource-intensive. Each one could take weeks of engineering time, and maintaining them meant constantly keeping up with API changes.

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Founder & CEO, SwarmZero

With hands-on help from their founder, we integrated Gmail and Google Drive in just 30 minutes. This level of personal support and commitment is exactly what startups should strive for.

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