How to integrate Human Approval - HITL Platform MCP with Codex

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

Human Approval - HITL Platform logoHuman Approval - HITL Platform
Api Key

Human Approval - HITL Platform is a HITL.sh service for adding human approval and review workflows to AI agents. Use it to pause risky automations, collect structured decisions, and resume safely.

10 Tools

Introduction

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

Also integrate Human Approval - HITL Platform 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 Human Approval - HITL Platform 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 Human Approval - HITL Platform MCP server, and what's possible with it?

The Human Approval - HITL Platform MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Human Approval - HITL Platform account. It provides structured and secure access to your human approval loops and review requests, so your agent can organize reviewers, request decisions, track responses, cancel pending reviews, and manage approval loops on your behalf.

  • Approval loop management: Have your agent create, rename, describe, list, or permanently delete approval loops for different teams and workflows.
  • Reviewer readiness checks: Let the agent list active and pending reviewers in a loop before sending work for human approval.
  • Human approval requests: Direct your agent to create and broadcast structured approval requests to the active reviewers in a chosen loop.
  • Decision tracking and cancellation: Instruct your agent to check an approval request's status and human response, list previous requests, or cancel a pending request.
  • Account and allowance checks: Have your agent verify the connected account's status, permissions, and remaining request allowance before asking for approval.

Conclusion

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

Supported Tools

Every Human Approval - HITL Platform action and event your agent gets out of the box.

Cancel Approval Request

Irreversibly cancel a pending approval request so reviewers can no longer complete it.

Create Approval Request

Create and broadcast one human approval request to active members of an owned loop, consuming one provider request allowance.

Create Loop

Create an approval loop and return its loop ID and human invitation links; the connected account is added as an active member.

Delete Loop

Permanently delete an owned loop and all of its memberships, approval requests, responses, feedback, and analytics.

Get Account Status

Return the connected HITL account identity, status, permissions, and provider-reported request allowance before creating an approval request.

Get Approval Request

Get the current status, configuration, and human response for one approval request; use for deliberate polling after creation.

List Approval Requests

Return approval requests created by the connected API key, optionally restricted to one loop; pagination controls are omitted because the live API currently ignores them.

List Loop Members

Return a loop's active and pending human reviewers so an agent can verify readiness before broadcasting an approval request.

List Loops

Return all approval loops owned by the connected account, including embedded members and membership counts.

Update Loop

Update one or more display fields of an owned approval loop without changing its members or requests.

FAQ

Frequently asked questions

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

Yes, absolutely. You can configure which Human Approval - HITL Platform 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 Human Approval - HITL Platform data and credentials are handled as safely as possible.

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