DC Hub MCP · Codex

DC Hub for Codex

OpenAI Codex: add DC Hub as an MCP server in ~/.codex/config.toml · 94 tools, free tier, 30 seconds to install.

Global facility map 311 DCPI markets 43 US ISO/BA grids live 1,400+ M&A deals Free tier · no credit card

1 Mint your free trial key

One click, no email to start. The key works in Codex's MCP config right away. Without an email it gets 15 free calls a day. Bind an email (free, no card) and the same key keeps working, at 50 requests/day for the rest of its 7-day trial.

2 Add DC Hub to your Codex config

Add this table to ~/.codex/config.toml, or to .codex/config.toml in a trusted project to scope it to that project.

[mcp_servers.dchub]
url = "https://dchub.cloud/mcp"
env_http_headers = { "X-API-Key" = "DCHUB_API_KEY" }

# Then, in the shell that starts codex:
export DCHUB_API_KEY="{{TRIAL_KEY}}"

# Keyless instead: drop the env_http_headers line (previews, no key needed).

Start codex and type /mcp to list active servers; DC Hub should be there. env_http_headers reads the key from the environment, so it stays out of the config file (http_headers takes a literal value instead). Keys follow OpenAI’s Codex MCP docs; check current docs there if a key is renamed.

3 Try these prompts in Codex

Use DC Hub: which US grid has the most headroom right now?

Rank the top 10 data center markets by DCPI for a 100MW build.

Find 50MW+ powered-shell sites in PJM with substation and fiber within a mile.

4 Free tier

Anonymous: previews, no key needed. Free key: previews plus 2 full answers per tool per day. Add an email: 50 calls/day (up to 10 full answers per tool per day). Paid plans: dchub.cloud/pricing.