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Connect your API client to ApiClo

ApiClo exposes an OpenAI-compatible endpoint for supported models. This guide covers a first text request from a trusted backend or local API client, not a browser application that would expose a secret key.

Try ApiClo with your own question

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Gift eligibility and rules

Verify the model: Hvoy and CCTest reports, screenshots and instructions

Before you start

  • Create an ApiClo account and a separate API key for this integration.
  • Check your balance and the current model list in your account. Copy the exact Model ID; a display name is not an API identifier.
Create an API key

Steps

  1. Set the endpoint

    Enter https://apiclo.com/v1 as Base URL. A client that appends /chat/completions then targets /v1/chat/completions. Do not append /v1 twice.

  2. Add authentication

    Store your ApiClo key in the client's protected key field or a backend environment variable. For direct HTTP, use Authorization: Bearer YOUR_APICLO_API_KEY. Never commit the key or include it in public HTML.

  3. Select a model

    Copy a Model ID from the current ApiClo catalog and enter it unchanged. Start with a short text request and stream=false before testing streaming or tool calls.

Check the result

Send one short test message from your own client. Check the HTTP status, returned content and usage entry in ApiClo. A successful text response does not establish compatibility with every optional API feature.

Troubleshooting

  • 401: check that the key belongs to ApiClo, is active and has no extra spaces. Do not share it in support messages.
  • 404: check the final URL, especially a duplicated /v1 or the wrong endpoint family.
  • A model error: copy the current Model ID again and check that this model is available for the selected interface.
  • A streaming or tool error: first repeat with a minimal non-streaming text request; then check the client-specific guide.

Compatibility and billing

OpenAI-compatible and Anthropic Messages clients use different endpoint conventions. Clients that append /v1/messages themselves use https://apiclo.com without /v1. The selected model is tried first; documented provider or capacity failures can trigger controlled fallback at the selected-model tariff. Managed Hermes hosting is charged separately. ApiClo is an independent service, not an official OpenAI or Anthropic product.

All documentation

See the checks. Try your own.

Open the original reports or repeat the checks with your own ApiClo key.

Your key. The same check.

Create an API key in your account. Check Opus with CCTest or Hvoy, and Astra with Hvoy. Use the endpoint and model ID below; paste your key directly on the test site.

API endpoint
https://apiclo.com
Claude Opus 5.5
claude-opus-5-5
GPT 6 Astra
gpt-6-astra

Each report records one test run. Use your own key to check the current result. Test requests are billed at the selected model's rate.