API Usage Guide

Welcome to the Just One API Official Documentation. We provide professional, stable, and high-performance data integration services, offering high-quality API interfaces across multiple sectors.

This guide will help you quickly integrate our services, covering pricing, base URL, authentication, response handling & error codes, and rate limits.

💰 Pricing

You can view the specific pricing for each endpoint by logging into the system: 👉 View Pricing

💡 Tip: You don't need to top up immediately after registration. We provide a limited number of free calls for testing. You can recharge your account once the free credits have been used.

🌐 Base URL

There is currently only one production API environment:

Environment	URL	Note
prod	https://api.justoneapi.com	Official unified production environment with HTTPS support

Latency Testing

If you are unsure about the latency of your current environment, you can test it using the /ping endpoint:

• Normal responses typically return within a few hundred milliseconds;
• If the /ping request is significantly delayed, please check your network or try again later.

🔐 Authentication

To access our API, you must include your access token as a URL parameter in every request:

http://<ip:port>/your-endpoint?token=your_access_token

To request a token, please sign up.

🚨 Response Handling & Error Codes

Business results should be determined by the code field in the response body (code: 0 indicates success).

Example Response

{
  "code": 0,
  "message": "",
  "data": { ... }
}

Business Code Reference

code	Meaning	Billed
0	Success	Yes 💰
100	Invalid or Inactive Token	No
301	Collection Failed. Please Retry.	No
302	Rate Limit Exceeded	No
303	Daily Quota Exceeded	No
400	Invalid Parameters	No
500	Internal Server Error	No
600	Permission Denied	No
601	Insufficient Balance	No

⏱ Timeout Recommendation

Although most API requests respond within a few seconds, we recommend setting your request timeout to at least 60 seconds.

This does not indicate that our API is slow — it simply helps avoid unintended errors or duplicate charges due to temporary network issues or client-side timeouts.

🚦 Rate Limits & Quota

There are no general rate limits for API usage.

However, a few high-traffic endpoints may have specific rate restrictions (e.g., per minute/hour), which will be indicated in their respective documentation.

📦 SDKs

To simplify your integration, we offer official SDKs:

• Python SDK : justoneapi-python

🛠 Support & Feedback

For any questions, integration support, or to request a custom solution, feel free to reach out via our support page:

👉 contact us