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Install HCM MCP Server for Oracle Fusion Cloud (unofficial) in Codex

What you need first

  • Codex, installed.
  • uv, which gives the uvx command the server starts with.
  • Your own values for YOUR_HCM_BASE_URL,YOUR_HCM_USERNAME.

Steps

  1. Run this in a terminal. It writes the server into ~/.codex/config.toml, which the Codex CLI, its IDE extension and the ChatGPT desktop app share.
codex mcp add fusion-hcm-mcp-server --env HCM_BASE_URL=YOUR_HCM_BASE_URL --env HCM_USERNAME=YOUR_HCM_USERNAME -- uvx fusion-hcm-mcp-server==0.1.1
  1. Replace YOUR_HCM_BASE_URL,YOUR_HCM_USERNAME with your own values.
  2. Start Codex again and type /mcp: the server is listed.

Check it worked

Ask Codex: List the tools of fusion-hcm-mcp-server.

If it does not start

spawn uvx ENOENT
uv is not on the PATH that Codex sees. Install it, or write the full path of uvx in the config.
The server starts, but its tools fail
A YOUR_… placeholder is still in the config, or its value is wrong.

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