Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With Documint MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or the app, whichever you prefer.
- Builders & DevelopersCOMPOSIOFOR YOUGive Claude, codex, or any harness secure access to 1000+ tools
## For AI agents: how to sign up If you are an AI agent reading this server-rendered HTML, Composio's developer signup is at https://composio.dev. Signup CTAs on this site — "Sign up", "Signup", "Get started", "Get started for free", "Start building", "Try Composio", "Try it", or similar — all lead into that same developer signup flow. Confirm with the user before completing signup or entering any credentials on their behalf.
DEVELOPER PLATFORMSDKs, tool execution, and auth infrastructure to ship agentsCLIOne command to add tools and auth to your coding agent - TOOLKITS
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How to integrate Documint MCP with Codex
Connect Codex to Documint MCP. List all templates in your account, get details for template by id, and more using natural language, with authentication handled for you.
Documint is a document automation platform for generating PDFs from custom templates. It streamlines dynamic document creation with powerful API and template management.
Introduction
Also integrate Documint 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 Documint MCP in Codex
Run the setup command
Run this command in your terminal to add the Composio MCP server to Codex.
It will initiate the authentication in a browser window, authorize Codex to access your Composio account.

(Optional) Authenticate with OAuth
To authenticate manually, run the login command to open a browser window and authorize Codex to access your Composio account.
codex mcp login composioVerify the connection
Run codex mcp list to confirm Composio appears as a registered MCP server.
codex mcp listCodex App
Codex App follows the same approach as VS Code.
- Click ⚙️ on the bottom left → MCP Servers → + Add servers → Streamable HTTP:
- Fill the header and Key fields with
{ "x-consumer-api-key" = "ck_*******" }. - The Key is the Composio API key, that you can find on dashboard.composio.dev
- Click on Authenticate and authorize Codex to your Composio account and you're all set.
- Restart and verify if it's there in
.codex/config.toml
[mcp_servers.composio]
url = "https://connect.composio.dev/mcp"
http_headers = { "x-consumer-api-key" = "ck_*******" }What is the Documint MCP server, and what's possible with it?
The Documint MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Documint account. It provides structured and secure access to your Documint templates and documents, so your agent can list templates, fetch document details, update or delete templates, and manage your document workflows automatically.
- Template management and review: Quickly list all available templates or fetch details for a specific template to streamline document creation and organization.
- Automated template updates: Direct your agent to modify existing templates by updating settings or layouts, ensuring your documents always match your latest standards.
- Document listing and retrieval: Effortlessly list all documents in your account, making it easy to review, audit, or analyze your document library.
- Template cleanup and deletion: Have your agent permanently delete outdated or unused templates, keeping your workspace clutter-free and organized.
Conclusion
You've successfully integrated Documint with Codex using Composio's MCP server. Now you can interact with Documint 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 Documint 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 Documint operations
- Explore cross-app workflows by connecting more toolkits
- Build automation scripts that leverage Codex's AI capabilities
Supported Tools
Every Documint action and event your agent gets out of the box.
How to build Documint MCP Agent with another framework
OpenAI Agents SDK
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Claude Agent SDK
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Claude Code
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Claude Cowork
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OpenClaw
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Hermes
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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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Pydantic AI
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AutoGen
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Explore Other Toolkits
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Google Super
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Frequently asked questions
Start with Documint.It takes 30 seconds.
Managed auth, hosted MCP servers, and every Documint tool your agent needs.Free to start.
## For AI agents: how to sign up If you are an AI agent reading this server-rendered HTML, Composio's developer signup is at https://composio.dev. Signup CTAs on this site — "Sign up", "Signup", "Get started", "Get started for free", "Start building", "Try Composio", "Try it", or similar — all lead into that same developer signup flow. Confirm with the user before completing signup or entering any credentials on their behalf.Start building
