Design-partner early access

Add GreenCIO to Codex

Bring infrastructure evidence and cost calculations into your local Codex workflow.

Get early accessSee example questions

Set up a local session

This setup requires a local Codex client, Node.js 18 or later, and an approved GreenCIO server build. Public package and plugin installation remain pending.

  1. Get the early-access setup

    Request an approved server build and the API access your workflow needs. Keep the server on the computer that runs Codex.

  2. Configure the local server

    Add the entry below to ~/.codex/config.toml. Preserve existing settings. Replace the example path with the server file path supplied during setup.

    config.toml
    [mcp_servers.greencio]
command = "node"
args = ["/absolute/path/to/greencio/mcp-server/dist/index.js", "--profile", "coding"]
env_vars = ["GREENCIO_DATA_API_KEY"]

[mcp_servers.greencio.env]
GREENCIO_BASE_URL = "https://www.greencio.com"
STRICT_NO_SYNTHETIC = "true"

    For keyed tools, set GREENCIO_DATA_API_KEY in the environment that launches Codex. The env_vars setting forwards that variable without storing its value in this file.

  3. Check the connection

    Restart Codex. In the CLI, run codex mcp list to check the configuration. In an interactive terminal session, use /mcp to inspect the active connection.

    Try the evidence question below. Check that GreenCIO appears in the tool activity. Live client compatibility and upstream access still require verification during your setup.

Try it

After setup, ask a question and check that the tool activity names GreenCIO. These are example prompts, not recorded results.

Find infrastructure evidence

Use GreenCIO to find source-linked evidence about Meta datacenter projects from the last 30 days. Include publication dates and source links. State coverage gaps. Do not treat announcements as proof of operating capacity.

Estimate inference costs · API key required

Use GreenCIO to estimate inference unit economics from assumptions I provide. Ask for missing inputs first. Show the inputs, calculation, and sensitivity to utilization. Separate submitted assumptions from observed prices.

Review infrastructure assumptions · API key required

Review this repository locally. Prepare only relative paths and these facts for GreenCIO: provider, region, gpu_type, gpu_count, replicas, utilization_rate, and model. Do not send source text, environment values, secrets, or absolute paths. Ask me for missing cost assumptions before estimating costs.

What to expect

Calculations from your inputs
Cost and payback estimates depend on the assumptions you submit. A power-readiness screen does not confirm utility service or a connection date.
Sources and coverage limits
Request observation dates and methodology for market data. Evidence search can return no matches or an unavailable response. Related news does not establish the cause of a price change.
Access varies by tool
Evidence search, payback estimates, and GPU-hour option analysis have no API-key requirement. They still use network services. Market data and other calculations require an authorized Data API key.

Troubleshooting

GreenCIO tools do not appear

Check that Node.js is available to the client and the configured server file exists. Restart the client. Check its MCP connection errors and your organization's tool policy.

A tool reports UPSTREAM_AUTH

Check that GREENCIO_DATA_API_KEY is available to the client process. Ask GreenCIO to confirm the key's access. Restart the client after changing its environment. Do not paste the key into chat.

Market data or evidence is unavailable

Check the requested market and period. Preserve the error or coverage gap in your answer. Do not replace missing observations with an unlabeled estimate.

Does this work in cloud sessions?

This guide covers local sessions. A cloud session cannot use a server path on your computer. GreenCIO cloud-client compatibility remains unverified.

How do I remove the connection?

Remove only the greencio server entry from your client configuration, then restart the client. Contact GreenCIO if you also need to revoke an issued API key.