How to integrate Corrently MCP with Codex

Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With Corrently 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

Corrently delivers real-time and forecasted renewable energy, CO₂, and electricity pricing data via API. It helps users make smarter, greener energy decisions and lower their carbon footprint.

23 Tools

Introduction

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

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

The Corrently MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Corrently account. It provides structured and secure access so your agent can perform Corrently operations on your behalf.

Conclusion

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

Supported Tools

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

CO₂ Meter Update

Tool to create or update a CO₂ meter reading for emissions tracking.

Commit Strom-Quittung

Tool to finalize a Strom-Quittung (electricity receipt) after collecting transaction data.

Geocode Location

Tool to geocode a free-text location into coordinates.

Energy Schedule Computation

Create an optimized operation schedule for energy-consuming devices based on the GrünstromIndex (Green Power Index).

Get Metering Reading

Tool to retrieve metered electricity reading with green/grey energy split and CO2 emissions data.

Get Stromkonto Balances

Retrieve Stromkonto account balances from the energy blockchain ledger.

Get Stromkonto Choices

Tool to get selectable contract choices for a Stromkonto customer.

Get WiM Process Status

Retrieve status information for WiM (Wechselprozesse im Messwesen) metering change processes.

GrünstromIndex Forecast

Tool to retrieve hourly green power forecast and CO2 data.

GSI Best Hour

Determines if now is the best time to turn on a device based on regional green energy (GrünstromIndex) forecasts in Germany.

Login to Stromkonto

Tool to initiate login to Stromkonto via email.

Electricity Market Data

Retrieve real-time and forecast electricity pricing data for Germany by postal code (Postleitzahl).

PHEV Navigator

Tool to get PHEV charge-or-fuel recommendation for German locations.

Post Metering Reading

Tool to post a meter reading and get it decorated with green/grey energy split.

Prepare Receipt Data

Tool to collect data for a receipt before finalizing.

PV Generation Forecast

Get hourly solar PV generation forecasts for a German location.

Register Stromkonto Account

Tool to register a new Stromkonto energy account in the Corrently system.

Renewable Energy Dispatch

Tool to get renewable energy flow and mix for a German ZIP code.

Electricity Generation Mix

Tool to retrieve real-time electricity generation mix in Germany.

Tariff Components

Retrieve detailed German electricity tariff cost breakdown by postal code.

Standard Load Profile Tariff SLPH0

Tool to retrieve standard load profile H0 tariff information.

Weather Forecast

Tool to retrieve hourly weather forecasts (wind speed and UV index) by geographic coordinates.

TyDID Consent Status

Check TyDID consent/grant status for an SSI (Self-Sovereign Identity).

FAQ

Frequently asked questions

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

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

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