Dropbox sign with Claude Agent SDK

How to integrate Dropbox sign MCP with Claude Agent SDK

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Introduction Also integrate Dropbox sign with TL;DR What is Claude Agent SDK What is the Dropbox sign MCP server Supported Tools & Triggers Creating MCP Server - Stand-alone vs Composio SDK Step-by-step Guide Complete Code Conclusion How to build Dropbox sign MCP Agent with another framework Explore Other Toolkits FAQ

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Introduction

This guide walks you through connecting Dropbox sign to the Claude Agent SDK using the Composio tool router. By the end, you'll have a working Dropbox sign agent that can send nda for signature to new hire, get status of recent signature requests, download signed contract from last week through natural language commands.

This guide will help you understand how to give your Claude Agent SDK agent real control over a Dropbox sign account through Composio's Dropbox sign MCP server.

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

Also integrate Dropbox sign with

ChatGPT OpenAI Agents SDK Claude Code Claude Cowork Codex OpenCode Cursor VS Code OpenClaw Hermes CLI Google ADK LangChain Vercel AI SDK Mastra AI LlamaIndex CrewAI

TL;DR

Here's what you'll learn:

Get and set up your Claude/Anthropic and Composio API keys
Install the necessary dependencies
Initialize Composio and create a Tool Router session for Dropbox sign
Configure an AI agent that can use Dropbox sign as a tool
Run a live chat session where you can ask the agent to perform Dropbox sign operations

What is Claude Agent SDK?

The Claude Agent SDK is Anthropic's official framework for building AI agents powered by Claude. It provides a streamlined interface for creating agents with MCP tool support and conversation management.

Key features include:

Native MCP Support: Built-in support for Model Context Protocol servers
Permission Modes: Control tool execution permissions
Streaming Responses: Real-time response streaming for interactive applications
Context Manager: Clean async context management for sessions

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

The Dropbox sign MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Dropbox Sign account. It provides structured and secure access to your e-signature workflows, so your agent can prepare signature requests, manage documents, track signing progress, and automate agreement workflows on your behalf.

Automated signature requests: Have your agent create, send, and manage legally binding signature requests to one or multiple recipients, streamlining document approval processes.
Template-based document preparation: Let your agent generate documents from templates, pre-fill fields, and quickly send out repeat agreements without manual editing.
Status tracking and reminders: Ask your agent to monitor the progress of signature requests, check who has signed, and send automated reminders to outstanding signers as needed.
Secure document storage and retrieval: Effortlessly fetch completed, pending, or archived documents, download signed agreements, and keep your workflow organized and compliant.
Audit trails and activity logs: Access detailed audit trails and event histories for every document, so you can maintain compliance and always know who did what, and when.

Supported Tools & Triggers

Tools

Invite User to TeamTool to invite a user to your Team.

Add User to TemplateTool to grant a specified account access to a template.

Bulk create embedded signature request with templateTool to create a BulkSendJob for embedded templated signature requests.

Bulk send with templateTool to create a BulkSendJob for templated signature requests.

Cancel Signature RequestCancels an incomplete signature request.

Create Dropbox Sign AccountTool to create a new Dropbox Sign account associated with a specified email address.

Create API AppTool to create a new Dropbox Sign API App.

Create Embedded Signature RequestTool to create an embedded signature request for signing in an iFrame.

Create Embedded Signature Request With TemplateTool to create an embedded signature request based on a template.

Create Embedded Template DraftTool to create an embedded template draft.

Create Embedded Unclaimed Draft with TemplateTool to create an embedded unclaimed draft using saved templates.

Create ReportRequest creation of CSV report(s) for a specified date range.

Create TemplateTool to create a reusable template for document signing workflows.

Create Unclaimed DraftTool to create an unclaimed draft that can be claimed via a unique URL.

Delete API AppTool to delete an API App from your Dropbox Sign account by its client_id.

Delete FaxTool to delete a fax from the system by its fax_id.

Delete TemplatePermanently deletes a template from your Dropbox Sign account by its template_id.

Download Signature Request FilesDownload files for a signature request as PDF (merged) or ZIP (individual documents).

Edit and Resend Embedded Signature RequestTool to edit and resend an embedded signature request.

Edit and Resend Signature RequestEdits and resends an existing non-templated signature request with updated documents, signers, or settings.

Edit and Resend Unclaimed DraftTool to edit and resend a previously created unclaimed draft.

Edit and Resend Embedded Signature Request With TemplateTool to edit and resend an embedded signature request using templates.

Get Dropbox Sign AccountRetrieves detailed information about a Dropbox Sign account including quotas, payment status, and settings.

Get API AppTool to retrieve information about an API App by its client ID.

Get Bulk Send JobTool to retrieve the status of a bulk send job.

Get Current Team MembershipTool to get the current team membership status and details.

Get Embedded Sign URLRetrieves an embedded signing URL for a specific signer's signature.

Get Embedded Template Edit URLTool to generate an edit URL for embedded template editing.

Get Available Fax Line Area CodesTool to retrieve available fax line area codes for a given country, state/province, and city.

Get Signature RequestRetrieves the current status and complete details of a signature request by ID.

Get Signature Request Files as Data URITool to download signature request files as a base64-encoded data URI.

Get Signature Request Files as File URLRetrieves a copy of the current documents and returns a JSON object with a URL to the file (PDFs only).

Get Team InfoRetrieves information about a Dropbox Sign team, including team name, member count, and sub-team count.

Get TemplateTool to return the specified template.

Download Template FilesTool to download documents associated with a template.

Get Template Files as Data URITool to retrieve template documents as base64-encoded data URI.

Get Template Files as File URLTool to retrieve a copy of template documents and return a JSON object with a URL to the file (PDFs only).

List API AppsTool to list API Apps.

List Bulk Send JobsTool to list bulk send jobs.

List FaxesTool to list faxes and their properties.

List Fax LinesTool to list fax lines and their properties.

List Signature RequestsTool to list signature requests.

List Sub-TeamsLists all sub-teams belonging to a parent team with pagination support.

List Team MembersLists all members and their roles for a specific team.

List All TeamsLists all Dropbox Sign teams accessible to the authenticated user, including the current team and its sub-teams.

List TemplatesTool to list templates.

Generate OAuth Authorization URLTool to generate an OAuth authorization URL.

Release Signature Request HoldRelease a held signature request to send it to signers.

Remove User from TemplateTool to remove an account's access to a template.

Send Signature RequestTool to create and send a new signature request with documents.

Send Request ReminderSends an email reminder to a signer about a pending signature request.

Update Dropbox Sign AccountTool to update Dropbox Sign account properties and settings.

Update API AppTool to update an existing API App in Dropbox Sign.

Update Signature RequestUpdates the email address and/or name for a specific signer on a signature request.

Update Template FilesTool to update files for an existing template.

Verify Dropbox Sign AccountTool to verify whether a Dropbox Sign account exists for the given email.

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:

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

Step-by-step Guide

Prerequisites

Before starting, make sure you have:

Composio API Key and Claude/Anthropic API Key
Primary know-how of Claude Agents SDK
A Dropbox sign account
Some knowledge of Python

Getting API Keys for Claude/Anthropic and Composio

Claude/Anthropic API Key

Go to the Anthropic Console and create an API key. You'll need credits to use the models.
Keep the API key safe.

Composio API Key

Log in to the Composio dashboard.
Navigate to your API settings and generate a new API key.
Store this key securely as you'll need it for authentication.

Install dependencies

pip install composio-anthropic claude-agent-sdk python-dotenv

Install the Composio SDK and the Claude Agents SDK.

What's happening:

composio-anthropic provides Composio integration for Anthropic
claude-agent-sdk is the core agent framework
python-dotenv loads environment variables

Set up environment variables

bash

COMPOSIO_API_KEY=your_composio_api_key_here
USER_ID=your_user_id_here
ANTHROPIC_API_KEY=your_anthropic_api_key_here

Create a .env file in your project root.

What's happening:

COMPOSIO_API_KEY authenticates with Composio
USER_ID identifies the user for session management
ANTHROPIC_API_KEY authenticates with Anthropic/Claude

Import dependencies

import asyncio
from claude_agent_sdk import ClaudeSDKClient, ClaudeAgentOptions
import os
from composio import Composio
from dotenv import load_dotenv

load_dotenv()

What's happening:

We're importing all necessary libraries including the Claude Agent SDK and Composio
The load_dotenv() function loads environment variables from your .env file
This setup prepares the foundation for connecting Claude with Dropbox sign functionality

Create a Composio instance and Tool Router session

async def chat_with_remote_mcp():
    api_key = os.getenv("COMPOSIO_API_KEY")
    if not api_key:
        raise RuntimeError("COMPOSIO_API_KEY is not set")

    composio = Composio(api_key=api_key)

    # Create Tool Router session for Dropbox sign
    mcp_server = composio.create(
        user_id=os.getenv("USER_ID"),
        toolkits=["dropbox_sign"]
    )

    url = mcp_server.mcp.url

    if not url:
        raise ValueError("Session URL not found")

What's happening:

The function checks for the required COMPOSIO_API_KEY environment variable
We're creating a Composio instance using our API key
The create method creates a Tool Router session for Dropbox sign
The returned url is the MCP server URL that your agent will use

Configure Claude Agent with MCP

# Configure remote MCP server for Claude
options = ClaudeAgentOptions(
    permission_mode="bypassPermissions",
    mcp_servers={
        "composio": {
            "type": "http",
            "url": url,
            "headers": {
                "x-api-key": os.getenv("COMPOSIO_API_KEY")
            }
        }
    },
    system_prompt="You are a helpful assistant with access to Dropbox sign tools via Composio.",
    max_turns=10
)

What's happening:

We're configuring the Claude Agent options with the MCP server URL
permission_mode="bypassPermissions" allows the agent to execute operations without asking for permission each time
The system prompt instructs the agent that it has access to Dropbox sign
max_turns=10 limits the conversation length to prevent excessive API usage

Create client and start chat loop

# Create client with context manager
async with ClaudeSDKClient(options=options) as client:
    print("\nChat started. Type 'exit' or 'quit' to end.\n")

    # Main chat loop
    while True:
        user_input = input("You: ").strip()
        if user_input.lower() in {"exit", "quit"}:
            print("Goodbye!")
            break

        # Send query
        await client.query(user_input)

        # Receive and print response
        print("Claude: ", end="", flush=True)
        async for message in client.receive_response():
            if hasattr(message, "content"):
                for block in message.content:
                    if hasattr(block, "text"):
                        print(block.text, end="", flush=True)
        print()

What's happening:

The Claude SDK client is created using the async context manager pattern
The agent processes each query and streams the response back in real-time
The chat loop continues until the user types 'exit' or 'quit'

Run the application

if __name__ == "__main__":
    asyncio.run(chat_with_remote_mcp())

What's happening:

This entry point runs the async chat_with_remote_mcp() function using asyncio.run()
The application will start, create the MCP connection, and begin the interactive chat session

Complete Code

Here's the complete code to get you started with Dropbox sign and Claude Agent SDK:

import asyncio
from claude_agent_sdk import ClaudeSDKClient, ClaudeAgentOptions
import os
from composio import Composio
from dotenv import load_dotenv

load_dotenv()

async def chat_with_remote_mcp():
    api_key = os.getenv("COMPOSIO_API_KEY")
    if not api_key:
        raise RuntimeError("COMPOSIO_API_KEY is not set")

    composio = Composio(api_key=api_key)

    # Create Tool Router session for Dropbox sign
    mcp_server = composio.create(
        user_id=os.getenv("USER_ID"),
        toolkits=["dropbox_sign"]
    )

    url = mcp_server.mcp.url

    if not url:
        raise ValueError("Session URL not found")

    # Configure remote MCP server for Claude
    options = ClaudeAgentOptions(
        permission_mode="bypassPermissions",
        mcp_servers={
            "composio": {
                "type": "http",
                "url": url,
                "headers": {
                    "x-api-key": os.getenv("COMPOSIO_API_KEY")
                }
            }
        },
        system_prompt="You are a helpful assistant with access to Dropbox sign tools via Composio.",
        max_turns=10
    )

    # Create client with context manager
    async with ClaudeSDKClient(options=options) as client:
        print("\nChat started. Type 'exit' or 'quit' to end.\n")

        # Main chat loop
        while True:
            user_input = input("You: ").strip()
            if user_input.lower() in {"exit", "quit"}:
                print("Goodbye!")
                break

            # Send query
            await client.query(user_input)

            # Receive and print response
            print("Claude: ", end="", flush=True)
            async for message in client.receive_response():
                if hasattr(message, "content"):
                    for block in message.content:
                        if hasattr(block, "text"):
                            print(block.text, end="", flush=True)
            print()

if __name__ == "__main__":
    asyncio.run(chat_with_remote_mcp())

Conclusion

You've successfully built a Claude Agent SDK agent that can interact with Dropbox sign through Composio's Tool Router.

Key features:

Native MCP support through Claude's agent framework
Streaming responses for real-time interaction
Permission bypass for smooth automated workflows

You can extend this by adding more toolkits, implementing custom business logic, or building a web interface around the agent.

How to build Dropbox sign MCP Agent with another framework

ChatGPT

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OpenAI Agents SDK

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Claude Code

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Claude Cowork

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Codex

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Cursor

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OpenClaw

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Hermes

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CLI

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Google ADK

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LangChain

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Vercel AI SDK

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Mastra AI

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LlamaIndex

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CrewAI

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OpenCode

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VS Code

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TOOLKIT MARKETPLACE

FAQ

What are the differences in Tool Router MCP and Dropbox sign MCP?

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

Can I use Tool Router MCP with Claude Agent SDK?

Yes, you can. Claude Agent 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 Dropbox sign tools.

Can I manage the permissions and scopes for Dropbox sign while using Tool Router?

Yes, absolutely. You can configure which Dropbox sign 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.

How safe is my data with Composio Tool Router?

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 Dropbox sign data and credentials are handled as safely as possible.

Used by agents from

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We handle tool reliability, observability, and security so you never have to second-guess an agent action.

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Harsha GaddipatiCo-founder, Slashy

Karan skipped his own birthday party to fix our critical issue. It was 10 pm and he diverted his Waymo to help us instead. This really sets the bar, shows you the commitment you need to have when users rely on your software.

Abhi AryaCo-founder, Opennote

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 has immensely helped in keeping new users on the platform.

Nirman DaveCEO, Zams

We chose Composio over Pipedream because it delivered depth where it mattered. It supported niche tools and tricky edge cases that other platforms simply ignored. Giving us confidence to scale without compromising.

Ryan YuFounder, Extra Thursday

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

Tomisin JenrolaFounder & CEO, SwarmZero

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

Jerome LeclancheCo-Founder, Ingram Technologies

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.

Harsha GaddipatiCo-founder, Slashy

Abhi AryaCo-founder, Opennote

Nirman DaveCEO, Zams

Ryan YuFounder, Extra Thursday

Tomisin JenrolaFounder & CEO, SwarmZero

Jerome LeclancheCo-Founder, Ingram Technologies

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.

Harsha GaddipatiCo-founder, Slashy

Abhi AryaCo-founder, Opennote

Nirman DaveCEO, Zams

Ryan YuFounder, Extra Thursday

Tomisin JenrolaFounder & CEO, SwarmZero

Jerome LeclancheCo-Founder, Ingram Technologies

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.

How to integrate Dropbox sign MCP with Claude Agent SDK

Table of Contents

Connect Dropbox sign without Auth hassles

Introduction

Also integrate Dropbox sign with

TL;DR

What is Claude Agent SDK?

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

Supported Tools & Triggers

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

What is Composio SDK?

How the Composio SDK works

Step-by-step Guide

Prerequisites

Getting API Keys for Claude/Anthropic and Composio

Install dependencies

Set up environment variables

Import dependencies

Create a Composio instance and Tool Router session

Configure Claude Agent with MCP

Create client and start chat loop

Run the application

Complete Code

Conclusion

How to build Dropbox sign MCP Agent with another framework

ChatGPT

OpenAI Agents SDK

Claude Code

Claude Cowork

Codex

Cursor

OpenClaw

Hermes

CLI

Google ADK

LangChain

Vercel AI SDK

Mastra AI

LlamaIndex

CrewAI

OpenCode

VS Code

Explore Other Toolkits

Google Drive

Google Docs

Google Super

FAQ

What are the differences in Tool Router MCP and Dropbox sign MCP?

Can I use Tool Router MCP with Claude Agent SDK?

Can I manage the permissions and scopes for Dropbox sign while using Tool Router?

How safe is my data with Composio Tool Router?

Used by agents from

Never worry about agent reliability