Recommended HTTP Cron Tool: cron-job.org for Automated Sign-ins
Recently, I had a simple requirement to automate sign-ins for certain websites. Before this, I tried QianDao for Python3, but writing HAR files for every task felt tedious. Plus, being a bit lazy, I looked for a simpler solution and eventually discovered cron-job.org.
Requirements for Automated Sign-ins
- Support for scheduled HTTP requests.
- Support for custom request headers.
- Support for passing cookies.
Attempts
Some HTTP monitoring tools allow custom headers, such as Monitoring Treasure, but they only support periodic repetition without custom timing, so I abandoned them.
I then switched to a shell script + crontab solution, which met all the requirements above, but adding and modifying tasks was not very convenient.
Is there a tool with a visual web interface that supports custom timing for HTTP requests? Finally, recommended by a V友, I found cron-job.org, which meets all three requirements.
About cron-job.org
cron-job.org is an open-source, free HTTP cron job tool with the following features:
Registering on cron-job.org
Registration URL: https://console.cron-job.org/signup
After registration, you can use it immediately after email verification. The free version does not limit the number of tasks (very generous), but there are differences compared to the paid version, as shown in the screenshot below.
Adding an Automated Sign-in Task with cron-job.org
Note: The following content involves some technical knowledge and requires an understanding of the HTTP protocol.
In the backend: https://console.cron-job.org/jobs/create, create a new task. The settings under COMMON are as shown in the screenshot (images can be clicked to enlarge).
Switch to Advanced to customize headers. Typically, we need to customize three header fields. If some websites are stricter, you may need more headers; analyze the HTTP packet capture content yourself.
- cookie: Check the cookie after logging into your target website.
- referer: Set it to any URL address that matches the target website.
- user-agent: It is recommended to match the User-Agent of your browser.
Finally, click "TEST RUN" at the bottom to check the test results. If everything is fine, click "SAVE".
Security Risks
In the above content, we used the online service provided by cron-job.org, which means cookie content is handed over to cron-job.org. Although cron-job.org may not actively leak data, we cannot guarantee against passive leaks. If you plan to use cron-job.org for automated sign-ins, it is suitable for less important small websites; it is not recommended for very important sites or those involving private data.
Additionally, cron-job.org is open-sourced on GitHub (though deployment is complex). Those interested can research it here: https://github.com/pschlan/cron-job.org
Other Website Sign-in Solutions
Supplementary Notes
Signing in via cookies has some limitations. Cookies have a certain validity period, which varies by website. After a cookie expires, you need to re-obtain it and update it in the cron-job.org task.
cron-job.org can do more than just website sign-ins; sign-in is just one scenario. For example, you can also use cron-job.org to monitor your API interfaces. Just use cron-job.org according to your needs. (Note: Abuse may lead to account deletion).