How to integrate Pneumatic MCP with Codex

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

Pneumatic logoPneumatic
Api Key

Pneumatic is a workflow management platform for reusable processes, tasks, and operations. It helps teams run consistent workflows and track performance without messy handoffs.

10 Tools

Introduction

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

Also integrate Pneumatic 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 Pneumatic 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 Pneumatic MCP server, and what's possible with it?

The Pneumatic MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Pneumatic account. It provides structured and secure access to your workflow templates, workflow runs, tasks, and datasets, so your agent can inspect processes, start workflows, track progress, complete tasks, and maintain reusable datasets on your behalf.

  • Workflow template discovery: Have your agent find accessible templates and review their tasks, kickoff fields, owners, and execution settings before starting work.
  • Workflow execution: Direct your agent to start a workflow from a template with a name, urgency, due date, and the required kickoff information.
  • Workflow tracking: Let the agent find workflow runs by status, template, starter, performer, task, or search text, then review their current state and timing.
  • Task management: Instruct your agent to find assigned tasks, review instructions and checklists, complete active tasks with output values, or return completed tasks to active work.
  • Reusable dataset management: Have your agent list available datasets, create new ones, or update their names, descriptions, and ordered items for use in workflows and templates.

Conclusion

You've successfully integrated Pneumatic with Codex using Composio's MCP server. Now you can interact with Pneumatic 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 Pneumatic 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 Pneumatic operations
  • Explore cross-app workflows by connecting more toolkits
  • Build automation scripts that leverage Codex's AI capabilities
TOOLS

Supported Tools

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

Get Task

Get one task's instructions, output fields, performers, checklists, due date, and completion state.

Get Template

Get a workflow template's tasks, kickoff fields, owners, and execution settings before running it.

Get Workflow

Get the current state, tasks, kickoff values, owners, and timing for one workflow run.

List Datasets

List reusable Pneumatic datasets available for workflow and template field configuration.

List Tasks

Find tasks assigned to the connected user or team, including active or completed work.

List Templates

Find workflow templates the connected user can access, with filters for name, activity, and visibility.

List Workflows

Find workflow runs by text, status, template, starter, current performer, or current task.

Run Template

Start a workflow from an accessible template, optionally supplying a name, urgency, due date, and kickoff field values.

Save Dataset

Create a reusable dataset or update an existing dataset's name, description, or ordered items without exposing deletion.

Set Task Completion

Complete an active task with output values or revert a completed task back to active work.

FAQ

Frequently asked questions

With a standalone Pneumatic MCP server, the agents and LLMs can only access a fixed set of Pneumatic tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Pneumatic 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 Pneumatic tools.

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

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