# Public test API

Check your HTTP connection and client setup without signing in, funding an account or running a model.

## Public simulation key

```text
sk-test-00000000000000000000000000000000
```

Base URL: https://unbound-me.com/v1

Use this exact public key in the API key field instead of a placeholder. It is not a personal credential. Every supported generation request with this key returns a fixed simulation, even if you select a production model ID. For real API usage, replace this test API key with your real Unbound API key.

## Try it

```sh
curl https://unbound-me.com/v1/chat/completions \
  -H 'Authorization: Bearer sk-test-00000000000000000000000000000000' \
  -H 'Content-Type: application/json' \
  -d '{"model":"unbound-test","messages":[{"role":"user","content":"Test my connection"}]}'
```

The assistant always says:

This request completed successfully. This is the Unbound test API: no model was run and no funds were charged. For real API usage, replace this test API key with your real Unbound API key.

Add `"stream":true` for a simulated stream. Normal JSON and streaming are available for Chat Completions, legacy text Completions, Responses and Anthropic-compatible Messages. Messages also accepts this key through `x-api-key`; do not mix test and real credentials.

## What is simulated?

- GET /v1/models lists unbound-test and public model IDs for client discovery.
- POST /v1/chat/completions, /v1/completions, /v1/responses and /v1/messages return the same fixed text.
- Reported token usage and charge are zero. Responses carry the X-Unbound-Test: true header and test metadata.
- The simulator does not run inference, read account balances, reserve funds, create usage receipts or grant API credit. Prompts are not echoed or saved.
- This tests transport and response parsing, not model quality, tool execution, embeddings, real request validation or billing. Model, prompt and tool instructions do not control the fixed response.
- Only this exact key activates simulation. Real customer keys continue to use the protected, billable API. This key does not sign you into the website or grant account, key-management, administrator or MCP access.

## Fair-use limits

The public simulator accepts JSON bodies up to 16 MiB, 20 requests per minute per IP, 120 requests per minute across the service and 4 concurrent requests. A 429 response means retry later; errors are not billable. These simulation limits do not redefine the limits of a real customer API key.

## OpenCode

Follow the [OpenCode setup guide](https://unbound-me.com/docs/opencode), enter the public test key at the key prompt and select an Unbound model. The response is deliberately simulated. Replace the stored test credential with a real Unbound inference key when you want actual model answers.

[Real API documentation](https://unbound-me.com/docs/api) · [Dashboard](https://unbound-me.com/dashboard)