API Key Generator

Programmatic Access

API Key Generator is also callable as a free HTTP JSON API at https://aidevhub.io/api/api-key-generator/ — GET with query parameters or POST with a JSON body, no authentication, CORS enabled, 50 requests/day per IP. Responses return { ok, tool, result, meta }.

curl -s "https://aidevhub.io/api/api-key-generator/?prefix=sk-test-&length=32"

Machine-readable contract: /api/tool/api-key-generator.json · All API endpoints: /agents/ · LLM site index: /llms.txt

Agent Invocation

How to Use API Key Generator

1. 1

   Prepare your input

   Collect the source text or structured payload you want to process and paste it into the tool input fields.

2. 2

   Select mode and run

   Choose the relevant mode (if available) and click Run to execute the deterministic transformation.

3. 3

   Review warnings and output

   Check warnings, validation notes, and generated output before using the result in production workflows.

4. 4

   Copy and integrate

   Copy the generated output and apply it in your project, API flow, or documentation pipeline.

Frequently Asked Questions

How do I generate a fake API key for testing?

Pick a format preset (or your own prefix), set a length, and generate. The result looks like a real provider key — same prefix and character set — but the random body is meaningless, so it is safe to drop into fixtures, seed data, mock server configs, and format-validation tests. The value is created in your browser and shown as JSON with its total length.

Step by step

1. Choose a mode: Generic, OpenAI-style, GitHub-style, or Anthropic-style.
2. For Generic, set a custom prefix; the others apply the provider's known prefix.
3. Set the random length (8 to 128 characters; the default is 32).
4. Copy the generated key into your test fixture or mock configuration.

Key format presets this generator produces

Prefixes as this generator applies them for realistic test fixtures. The random body is Base62 (A–Z, a–z, 0–9) of length 8–128; it copies the shape of real keys but is not a valid credential.

How random are the generated keys?

The random body is drawn from the browser's Web Crypto getRandomValues, a cryptographically secure generator, using rejection sampling so every character in the 62-character alphabet is equally likely. It only falls back to Math.random if Web Crypto is unavailable. That is strong enough for unique, unpredictable test fixtures.

Can I match a specific provider's key format?

Use the matching preset for the prefix, or the Generic mode with your own prefix for an internal scheme. The reported length is the whole key — prefix plus the random body — so if a test asserts on total length, set the random length with that prefix in mind.

Are these safe to use, and does anything leave the browser?

Generation is fully client-side; no key is transmitted or logged. Because the keys are random placeholders they are safe to commit into test fixtures, but they must never be used as real credentials — and you should never paste a genuine production key into any generator. Treat every generated string as a stand-in, not a secret.