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**Requirements:** a MONEI account (section 2).

1. Sign in to the MONEI **Dashboard** and switch to **test mode** from the Dashboard's own header.
2. Go to **Settings → API Keys** (`dashboard.monei.com/settings/api`).
3. Generate your **test API key** and also write down your test **Account ID** — both are different from the production ones, and only work in test mode.
4. Copy the key's full value.

Verified against MONEI's official documentation (`docs.monei.com/docs/testing`, checked on September 5, 2026).