How to integrate Documenso MCP with Claude Code

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Introduction

Manage your Documenso directly from Claude Code with zero worries about OAuth hassles, API-breaking issues, or reliability and security concerns.

You can do this in two different ways:

  1. Via Composio Connect - Direct and easiest approach
  2. Via Composio SDK - Programmatic approach with more control

Also integrate Documenso with

Why use Composio?

  • Only one MCP URL to connect multiple apps with Claude Code with zero auth hassles.
  • Programmatic tool calling allows LLMs to write its code in a remote workbench to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
  • Handling Large tool responses out of LLM context to minimize context rot.
  • Dynamic just-in-time access to 20,000 tools across 1000+ other Apps for cross-app workflows. It loads the tools you need, so LLMs aren't overwhelmed by tools you don't need.

Connecting Documenso to Claude Code using Composio

1. Add the Composio MCP to Claude

Terminal

2. Start Claude Code

bash
claude

3. Open your MCP list

bash
/mcp

4. Select Composio and click on Authenticate

Select Composio and click Authenticate

5. This will redirect you to the Composio OAuth page. Complete the flow by authorizing Composio and you're all set.

Composio OAuth authorization page
Composio authorization complete
Ask Claude to connect to your account and authenticate via the link

Supported Tools & Triggers

Tools
Create Document BetaTool to create a new document using the beta endpoint that returns a presigned URL for file upload.
Create Document FieldTool 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 RecipientTool to create a single recipient for a document.
Create Document Recipients BulkTool to create multiple recipients for a document at once.
Create Embedding Presign Token V2 BetaCreate a presign token for Documenso embedded authoring sessions.
Create EnvelopeTool to create a new envelope in Documenso.
Create Envelope AttachmentCreate a new attachment for an envelope in Documenso.
Create Envelope Items BulkTool to create multiple items for an envelope with optional file attachments.
Create Envelope Recipients BulkTool to create multiple recipients for an envelope in bulk.
Create FolderCreate a new folder in Documenso to organize documents or templates.
Create Template BetaTool to create a new template using the beta endpoint that returns a presigned URL for file upload.
Create Template FieldTool 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 RecipientTool to create a single recipient for a template.
Create Template Recipients BulkTool to create multiple recipients for a template at once.
Delete DocumentTool to delete a document.
Delete Document AttachmentTool to delete an attachment from a document.
Delete Document FieldTool to delete a single document field by ID.
Delete Document FieldsTool to delete one or more fields from a document.
Delete Document RecipientTool to delete a recipient from a document.
Delete EnvelopeTool to permanently delete an envelope.
Delete Envelope AttachmentTool to delete an attachment from an envelope.
Delete Envelope FieldTool to delete a field from an envelope.
Delete Envelope ItemTool to delete an item from an envelope.
Delete Envelope RecipientTool to delete a recipient from an envelope.
Delete FolderTool to permanently delete a folder.
Delete TemplatePermanently delete a template by its ID.
Delete Template Direct LinkDelete a direct link for a template.
Delete Template RecipientTool to delete a recipient from a template.
Delete Template V2Tool to permanently delete a template using the v2 API.
Distribute Document V2Tool to distribute a document for signing.
Distribute EnvelopeTool to distribute an envelope to recipients for signing.
Download Envelope ItemDownload an envelope item as PDF.
Download Signed DocumentDownload a completed/signed document as PDF.
Duplicate Document V2Tool to duplicate a document.
Duplicate Envelope V2Tool to duplicate an envelope with all its settings.
Duplicate TemplateTool to duplicate a template with all its settings.
Find DocumentsFind documents based on search criteria with filtering and pagination.
Find Documents V2Retrieve a paginated list of documents with optional filtering and sorting.
Find EnvelopesTool to find envelopes based on search criteria, filters, and pagination.
Find FoldersTool to find folders based on search criteria and filters.
Find TemplatesRetrieve a paginated list of templates with optional filtering and search.
Get Document By IDRetrieve complete information about a document by its ID.
Get Document FieldTool to retrieve a document field by its ID.
Get Document RecipientTool to retrieve detailed information about a document recipient by their ID.
Get Documents By IDsRetrieve multiple documents by their IDs in a single request.
Get Envelope AttachmentTool to find all attachments for a specific envelope.
Get Envelope Audit LogTool to retrieve audit logs for an envelope.
Get Envelope By IDRetrieve complete information about an envelope by its ID.
Get Envelope FieldTool to fetch an envelope field by ID.
Get Envelope RecipientTool to retrieve detailed information about an envelope recipient by their ID.
Get Envelopes By IDsTool to retrieve multiple envelopes by their IDs.
Get Template By IDRetrieve complete information about a template by its ID.
Get Template FieldTool to fetch a template field by ID.
Get Template RecipientTool to retrieve detailed information about a template recipient by their ID.
Get Templates By IDsRetrieve multiple templates by their IDs in a single request.
List TemplatesTool to list templates.
Move Document V2Tool to move a document to a team.
Redistribute Document V2Re-send signing request emails to specified recipients of a document.
Redistribute EnvelopeTool to redistribute an envelope to recipients who have not actioned it.
Remove Team Member V1Remove a member from a Documenso team.
Update Document AttachmentTool to update an existing document attachment.
Update Document FieldTool to update a single document field's properties in Documenso v2 API.
Update Document Fields BulkTool to update multiple document fields in a single operation.
Update Document Recipient V2Tool to update a document recipient using the v2 API.
Update Document V2Update document properties like title, visibility, and signing settings.
Update EnvelopeUpdate envelope properties like title, visibility, and signing settings.
Update Envelope AttachmentTool to update an existing envelope attachment.
Update Envelope Fields BulkTool to update multiple envelope fields in a single request.
Update Envelope Items BulkTool to update multiple envelope items in a single request.
Update FolderUpdate properties of an existing folder including name, pinned status, parent folder, and visibility.
Update TemplateUpdate template properties like title, visibility, and signing settings.
Update Template Fields BulkTool to update multiple template fields in a single operation.
Update Template RecipientTool to update a template recipient.
Update Template Recipients BulkTool to update multiple template recipients in a single API call.
Use Template (v2-beta)Tool to create a document from a template.

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.

Connecting Documenso via Composio SDK

Composio SDK is the underlying tech that powers Rube. It's a universal gateway that does everything Rube does but with much more programmatic control. You can programmatically generate an MCP URL with the app you need (here Documenso) for even more tool search precision. It's secure and reliable.

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

Prerequisites

Before starting, make sure you have:
  • Claude Pro, Max, or API billing enabled Anthropic account
  • Composio API Key
  • A Documenso account
  • Basic knowledge of Python or TypeScript

Install Claude Code

bash
# macOS, Linux, WSL
curl -fsSL https://claude.ai/install.sh | bash

# Windows PowerShell
irm https://claude.ai/install.ps1 | iex

# Windows CMD
curl -fsSL https://claude.ai/install.cmd -o install.cmd && install.cmd && del install.cmd

To install Claude Code, use one of the following methods based on your operating system:

Set up Claude Code

bash
cd your-project-folder
claude

Open a terminal, go to your project folder, and start Claude Code:

  • Claude Code will open in your terminal
  • Follow the prompts to sign in with your Anthropic account
  • Complete the authentication flow
  • Once authenticated, you can start using Claude Code
Claude Code initial setup showing sign-in prompt
Claude Code terminal after successful login

Set up environment variables

bash
COMPOSIO_API_KEY=your_composio_api_key_here
USER_ID=your_user_id_here

Create a .env file in your project root with the following variables:

  • COMPOSIO_API_KEY authenticates with Composio (get it from Composio dashboard)
  • USER_ID identifies the user for session management (use any unique identifier)

Install Composio library

pip install composio-core python-dotenv

Install the Composio Python library to create MCP sessions.

  • composio-core provides the core Composio functionality
  • python-dotenv loads environment variables from your .env file

Generate Composio MCP URL

import os
from composio import Composio
from dotenv import load_dotenv

load_dotenv()

COMPOSIO_API_KEY = os.getenv("COMPOSIO_API_KEY")
USER_ID = os.getenv("USER_ID")

composio_client = Composio(api_key=COMPOSIO_API_KEY)

composio_session = composio_client.create(
    user_id=USER_ID,
    toolkits=["documenso"],
)

COMPOSIO_MCP_URL = composio_session.mcp.url

print(f"MCP URL: {COMPOSIO_MCP_URL}")
print(f"\nUse this command to add to Claude Code:")
print(f'claude mcp add --transport http documenso-composio "{COMPOSIO_MCP_URL}" --headers "X-API-Key:{COMPOSIO_API_KEY}"')

Create a script to generate a Composio MCP URL for Documenso. This URL will be used to connect Claude Code to Documenso.

What's happening:
  • We import the Composio client and load environment variables
  • Create a Composio instance with your API key
  • Call create() to create a Tool Router session for Documenso
  • The returned mcp.url is the MCP server URL that Claude Code will use
  • The script prints this URL so you can copy it

Run the script and copy the MCP URL

python generate_mcp_url.py

Run your Python script to generate the MCP URL.

  • The script connects to Composio and creates a Tool Router session
  • It prints the MCP URL and the exact command you need to run
  • Copy the entire claude mcp add command from the output

Add Documenso MCP to Claude Code

bash
claude mcp add --transport http documenso-composio "YOUR_MCP_URL_HERE" --headers "X-API-Key:YOUR_COMPOSIO_API_KEY"

# Then restart Claude Code
exit
claude

In your terminal, add the MCP server using the command from the previous step. The command format is:

  • claude mcp add registers a new MCP server with Claude Code
  • --transport http specifies that this is an HTTP-based MCP server
  • The server name (documenso-composio) is how you'll reference it
  • The URL points to your Composio Tool Router session
  • --headers includes your Composio API key for authentication

After running the command, close the current Claude Code session and start a new one for the changes to take effect.

Verify the installation

bash
claude mcp list

Check that your Documenso MCP server is properly configured.

  • This command lists all MCP servers registered with Claude Code
  • You should see your documenso-composio entry in the list
  • This confirms that Claude Code can now access Documenso tools

If everything is wired up, you should see your documenso-composio entry listed:

Claude Code MCP list showing the toolkit MCP server

Authenticate Documenso

The first time you try to use Documenso tools, you'll be prompted to authenticate.

  • Claude Code will detect that you need to authenticate with Documenso
  • It will show you an authentication link
  • Open the link in your browser (or copy/paste it)
  • Complete the Documenso authorization flow
  • Return to the terminal and start using Documenso through Claude Code

Once authenticated, you can ask Claude Code to perform Documenso operations in natural language. For example:

  • "Send a contract to client for signature"
  • "Download the latest signed NDA document"
  • "List all templates for onboarding paperwork"

Complete Code

Here's the complete code to get you started with Documenso and Claude Code:

import os
from composio import Composio
from dotenv import load_dotenv

load_dotenv()

COMPOSIO_API_KEY = os.getenv("COMPOSIO_API_KEY")
USER_ID = os.getenv("USER_ID")

composio_client = Composio(api_key=COMPOSIO_API_KEY)

composio_session = composio_client.create(
    user_id=USER_ID,
    toolkits=["documenso"],
)

COMPOSIO_MCP_URL = composio_session.mcp.url

print(f"MCP URL: {COMPOSIO_MCP_URL}")
print(f"\nUse this command to add to Claude Code:")
print(f'claude mcp add --transport http documenso-composio "{COMPOSIO_MCP_URL}" --headers "X-API-Key:{COMPOSIO_API_KEY}"')

Conclusion

You've successfully integrated Documenso with Claude Code using Composio's MCP server. Now you can interact with Documenso directly from your terminal using natural language commands.

Key features of this setup:

  • Terminal-native experience without switching contexts
  • Natural language commands for Documenso operations
  • Secure authentication through Composio's managed MCP
  • Tool Router for dynamic tool discovery and execution

Next steps:

  • Try asking Claude Code to perform various Documenso operations
  • Add more toolkits to your Tool Router session for multi-app workflows
  • Integrate this setup into your development workflow for increased productivity

You can extend this by adding more toolkits, implementing custom workflows, or building automation scripts that leverage Claude Code's capabilities.

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FAQ

What are the differences in Tool Router MCP and Documenso MCP?

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.

Can I use Tool Router MCP with Claude Code?

Yes, you can. Claude Code 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.

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

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.

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 Documenso data and credentials are handled as safely as possible.

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