Connect Codex to Fixer
Set up in minutes
Choose where it runs
On your computer through your own Codex, or hosted in the cloud. The rest of setup adapts to your choice:
Pick what it can do in Fixer
A preset of real Fixer operations. Each one becomes a tool the agent can call, and it can't touch anything outside the list.
Connect Fixer
One sign-in. The agent acts through your account, scoped to the operations you picked.
Add your personal MCP link
The last step mints a private MCP URL for this agent and walks you through exactly this, with your real link filled in. The page flips to Connected the moment your Codex first calls in. Codex connects when a session starts — run codex, or restart a running one (in the Codex app, Restart).
Run this in your terminal. The Codex app shares its config, so it gets the server too
<your-link> is your personal server URL — setup mints it for you.
Tools Codex gets
Fixer
10 toolsList supported currency codes and names; also checks key reachability.
Get the latest exchange rates for all or selected currencies.
Get latest mid rates with available bid/ask quotes (Professional or higher).
Get exchange rates for a historical date.
Get historical mid rates and available bid/ask quotes after September 24, 2026.
Convert an amount using the latest available exchange rate.
Convert an amount using a specified historical date.
Get daily exchange rates between two dates.
Get daily rates and available bid/ask quotes (Professional or higher).
Get currency change and percentage change between two dates.
About Codex
Frequently asked questions
More ways to connect
Open your Codex agent in one click.
NoClick runs Codex for you with Fixer wired in as tools. Connect your account and run.