How to connect Docmosis to Claude

Connect Claude Web, Desktop and Cowork to Docmosis MCP. Generate monthly invoice pdf for a customer, create personalized offer letters for new hires, and more using natural language, with authentication handled for you.

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Api Key

Docmosis generates PDF and Word documents from user-defined templates. It's perfect for merging data fields to quickly produce reports, invoices, and business letters.

17 Tools

Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.

This guide walks you through the easiest and most secure way to connect your Docmosis account to Claude via Composio Connect, enabling it to generate monthly invoice PDF for a customer, create personalized offer letters for new hires, produce event registration forms as Word docs, and more such actions on your behalf without compromising your account security.

Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

Also integrate Docmosis with

Connecting Docmosis to Claude Web, Desktop, and Cowork

Two ways to add the Composio connector. Pick whichever you prefer.

1. Add with one click

Click the button. Claude opens with the Composio connector filled in. Click Add, then go to step 2.

Add to Claude

Add manually

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

2. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Web, Desktop, and Cowork

3. Connect your Docmosis account

Back in Claude, ask it to connect to Docmosis or give it any Docmosis-related task.

For example, ask Claude to:

  • "Generate monthly invoice PDF for a customer"
  • "Create personalized offer letters for new hires"
  • "Produce event registration forms as Word docs"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Claude, and your Docmosis account is ready to use.

What is the Docmosis Claude Connector, and what's possible with it?

The Docmosis MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Docmosis account. It provides structured and secure access to your document templates and generation capabilities, so your agent can perform actions like generating documents, merging data fields, exporting PDFs or Word files, and automating report creation on your behalf.

  • Dynamic document generation: Instantly create PDF or Word documents from pre-built templates by merging in your custom data fields.
  • Automated report and invoice creation: Let your agent assemble business reports, invoices, or letters using real-time input and reusable templates.
  • Template management and selection: Retrieve, list, and select from available templates for different document types or business needs.
  • Batch document processing: Generate multiple documents at once by feeding bulk data sets—perfect for automating repetitive paperwork.
  • Flexible file export and delivery: Export generated documents in your preferred format and deliver them to specified locations, systems, or users automatically.

Troubleshooting

1. Why does Claude not use the Composio connector for Docmosis?

The connector can show as connected, but Claude must use it in each Docmosis conversation.

  • Click + at the lower left of the chat, or type /.
  • Hover Connectors.
  • Turn on Composio.
  • Ask Claude to connect to Docmosis again.

2. Why does Claude show an MCP server error before Docmosis connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for Docmosis.

  • Check that the connector URL is https://connect.composio.dev/mcp.
  • Connectors run from Anthropic's cloud, so your device network is usually not the problem.
  • Add the connector again from Customize > Connectors, then ask Claude to connect Docmosis.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the Docmosis authorization link not work?

The Composio connector is one server. Your Docmosis account connects separately when Claude asks for it.

  • If the browser does not open, or the link expires, ask Claude to retry the Docmosis connection.
  • Composio creates a fresh Docmosis authorization link.
  • Open that link in your browser and finish the Docmosis sign-in.

4. Why do Docmosis actions fail after they worked before?

The Docmosis connection can expire or lose permission.

  • Ask Claude to inspect the Docmosis connection.
  • If the connection is unhealthy, disconnect it when Claude prompts you.
  • Reconnect the Docmosis account and retry the action.
  • If Claude shows a permission prompt, approve it before Claude changes data in Docmosis.
  • If the action still fails with a permission error, check that the connected account has that permission in Docmosis itself.

5. How do I switch to a different Docmosis account?

Claude can manage the Docmosis connection for you.

  • Ask Claude to disconnect or delete the current Docmosis account.
  • Ask Claude to connect Docmosis again.
  • Open the new Composio authorization link for Docmosis.
  • Sign in with the other Docmosis account in the browser.
  • After the account connects, ask Claude to retry the Docmosis task.

6. Why is my Docmosis connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your Docmosis connection works in Claude Web, Desktop, and Cowork.

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click and click Clear cache.
  • If Docmosis tools still do not appear, click , disconnect, remove the connector, and add it again.
  • On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect Docmosis.
TOOLS

Supported Tools

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

Docmosis: Delete Image(s)

Tool to delete one or more stored images.

Docmosis: Delete Template(s)

Tool to delete one or more templates from the environment.

Docmosis Environment Ready

Tool to verify environment readiness.

Docmosis Environment Summary

Tool to retrieve environment summary.

Docmosis: Get API Key

Tool to extract the Docmosis API access key from connection metadata.

Get Batch Upload Status

Tool to check the status of a template batch upload job.

Download Docmosis Images

Tool to download one or more images.

Get Docmosis Render Queue

Tool to get current render queue status and utilization.

Get Render Tags

Tool to retrieve statistics on renders tagged with user-defined phrases.

Get Template Sample Data

Tool to generate sample data for a Docmosis template based on its structure.

Download Docmosis Templates

Tool to retrieve originally uploaded templates.

Get Docmosis Template Details

Tool to retrieve metadata for an uploaded template.

Get Docmosis Template Structure

Tool to retrieve a template's parsed structure: fields, repeats, conditions, images, and refs.

Docmosis: List Images

Tool to list available stock images.

Docmosis: List Templates

Tool to list all templates available in the environment.

Docmosis Ping

Tool to check connectivity to Docmosis Cloud services.

Ping Docmosis Service

Tool to check that Docmosis Cloud services are online and at least one server is listening.

FAQ

Frequently asked questions

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

Yes, you can. Claude Cowork 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 Docmosis tools.

Yes, absolutely. You can configure which Docmosis 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 Docmosis data and credentials are handled as safely as possible.

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