Random API Key Generator

How to use

1. 1️⃣
   Choose your options above
2. 2️⃣
   Click Generate
3. 3️⃣
   Copy your result

Detailed instructions

1. Set the Number of Keys field to how many API keys you want generated in one batch.
2. Choose a Key Format from the dropdown: prefixed for Stripe-style keys, hex for AWS-style tokens, or alphanumeric for generic use.
3. Click Generate to produce your keys instantly in the output panel.
4. Click any individual key to copy it, or copy the full list to paste into your .env file, Postman environment, or documentation.

Use Cases

• •Seeding a staging Postgres database with unique per-user API keys using a Jest beforeAll fixture script
• •Populating Postman environment variables with hex-64 placeholders during early API prototyping
• •Testing prefix-detection middleware by generating batches of Stripe-style sk_test_ keys before the real integration is wired up
• •Writing GitHub tutorial code that shows realistic key examples without exposing any live credentials
• •Fuzzing API key validation regex across 30+ alphanumeric and hex keys to confirm your pattern handles all expected formats

Tips

• →Use the prefixed format when your middleware reads the key prefix to decide env or permission level — realistic prefixes stress-test that logic.
• →Generate 10-20 alphanumeric keys at once and paste them as fixture data in your test suite so each test user gets a distinct, realistic-looking key.
• →If your docs show multiple API calls, use one batch of prefixed keys throughout so examples look like they belong to the same account.
• →Pair generated hex keys with a fake UUID generator to build complete mock authentication payloads for Postman collections.
• →Avoid using the same placeholder key in both your README examples and your actual test fixtures — someone may copy the README value and wonder why it fails.
• →When mocking third-party SDKs locally, match the key length and prefix of the real service so SDK validation helpers don't reject the placeholder before your code even runs.

FAQ