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Introduction

Gemini is an AI chat service provided by Ace Data Cloud, based on Google’s Gemini series large language models. Through the unified API of Ace Data Cloud, you can quickly integrate Gemini using JavaScript to achieve multi-turn conversations, system prompts, streaming output, JSON output mode, and other features.

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Prerequisites

  • Have an Ace Data Cloud account and obtain an API Token
  • Node.js 18+ or a modern browser environment

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Basic Usage

The main endpoint for calling the Gemini API is: 
POST https://api.acedata.cloud/gemini/chat/completions
This example uses the gemini-2.5-flash model.
Available models include: gemini-2.5-flash, gemini-2.5-pro, gemini-2.0-flash, gemini-3.0-pro. Complete JavaScript code example: 
const response = await fetch("https://api.acedata.cloud/gemini/chat/completions", {
  method: "POST",
  headers: {
    "Authorization": "Bearer YOUR_API_TOKEN",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
  "model": "gemini-2.5-flash",
  "messages": [
    {
      "role": "user",
      "content": "你好，请介绍一下你自己"
    }
  ],
  "max_tokens": 1024,
  "temperature": 0.7
}),
});

const result = await response.json();
console.log(result);
Please replace YOUR_API_TOKEN with the actual token you obtained from the Ace Data Cloud platform.

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Response Handling

It is recommended to check the response status code and handle errors: 
if (response.ok) {
  const result = await response.json();
  console.log("Call succeeded:", result);
} else {
  console.error(`Call failed, status code: ${response.status}`);
  const error = await response.text();
  console.error(error);
}

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Node.js Wrapper

It is recommended to encapsulate into a reusable function: 
async function callGemini(data) {
  const response = await fetch("https://api.acedata.cloud/gemini/chat/completions", {
    method: "POST",
    headers: {
      "Authorization": `Bearer ${process.env.ACE_API_TOKEN}`,
      "Content-Type": "application/json",
    },
    body: JSON.stringify(data),
  });
  if (!response.ok) throw new Error(`API error: ${response.status}`);
  return response.json();
}

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Error Handling

Common error codes:
Status CodeDescription
401Authentication failed, please check API Token
403Insufficient balance or no access
429Request rate limit exceeded
500Internal server error

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Next Steps