How to integrate Docnify MCP with Codex

Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With Docnify MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or the app, whichever you prefer.

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Api Key

Docnify is a digital signing platform that streamlines the way you sign and manage documents. It brings together tools like Figma, Jira, Trello, and Google Docs for a unified document workspace.

13 Tools

Introduction

Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With Docnify MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or the app, whichever you prefer.

Also integrate Docnify with

Why use Composio?

Apart from a managed and hosted MCP server, you will get:

  • CodeAct: A dedicated workbench that allows GPT to write its code to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
  • Large tool responses: Handle them to minimise 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 GPTs aren't overwhelmed by tools you don't need.

How to install Docnify MCP in Codex

Run the setup command

Run this command in your terminal to add the Composio MCP server to Codex.

Terminal

It will initiate the authentication in a browser window, authorize Codex to access your Composio account.

Composio authentication page

(Optional) Authenticate with OAuth

To authenticate manually, run the login command to open a browser window and authorize Codex to access your Composio account.

bash
codex mcp login composio

Verify the connection

Run codex mcp list to confirm Composio appears as a registered MCP server.

bash
codex mcp list

Codex App

Codex App follows the same approach as VS Code.

  1. Click ⚙️ on the bottom left → MCP Servers → + Add servers → Streamable HTTP:
  2. Fill the header and Key fields with { "x-consumer-api-key" = "ck_*******" }.
  3. The Key is the Composio API key, that you can find on dashboard.composio.dev
  4. Click on Authenticate and authorize Codex to your Composio account and you're all set.
Codex App MCP setup
  1. Restart and verify if it's there in .codex/config.toml
bash
[mcp_servers.composio]
url = "https://connect.composio.dev/mcp"
http_headers = { "x-consumer-api-key" = "ck_*******" }

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

The Docnify MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Docnify account. It provides structured and secure access to your digital signing workflows, so your agent can perform actions like listing documents, adding recipients, creating document fields, and resending signature requests on your behalf.

  • Seamless document management: Let your agent list, fetch, or delete documents in your Docnify account to keep your workspace organized and up to date.
  • Effortless recipient handling: Automatically add or remove recipients from documents, manage their signing order, and control access with a single prompt.
  • Custom field creation and editing: Direct your agent to add or remove fields—like signature, initials, or dates—on documents before sending them out for signing.
  • Template automation: Quickly list available templates or fetch template details, letting your agent streamline the process of generating new documents.
  • Signature request management: Easily resend signature requests or notifications, ensuring signers don’t miss important documents and deadlines.

Conclusion

You've successfully integrated Docnify with Codex using Composio's MCP server. Now you can interact with Docnify directly from your terminal, VS Code, or the Codex App using natural language commands.

Key benefits of this setup:

  • Seamless integration across CLI, VS Code, and standalone app
  • Natural language commands for Docnify operations
  • Managed authentication through Composio
  • Access to 20,000+ tools across 1000+ apps for cross-app workflows
  • CodeAct workbench for complex tool chaining

Next steps:

  • Try asking Codex to perform various Docnify operations
  • Explore cross-app workflows by connecting more toolkits
  • Build automation scripts that leverage Codex's AI capabilities
TOOLS

Supported Tools

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

Add Document Recipient

Tool to add a recipient to a document.

Create Document Fields

Tool to create one or more fields on a document.

Delete Document

Tool to delete a specific document by its ID.

Delete Document Field

Tool to delete a field from a document.

Delete document recipient

Tool to remove a recipient from a document.

Get Document

Tool to fetch a specific document by its ID.

Get Template

Tool to fetch a specific template by its ID.

List Documents

Tool to list documents in the Docnify account.

List Templates

Tool to list templates in the Docnify account.

Resend Document

Tool to resend a document for signing.

Send Document

Tool to send a document for signing.

Update Document Fields

Tool to update metadata of document fields.

Update Document Recipient

Tool to update a recipient's details (name, email, role) on a document.

FAQ

Frequently asked questions

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

Yes, you can. Codex 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 Docnify tools.

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

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