What is User-Agent?
An HTTP header identifying the client software making the request.
Definition
The User-Agent is an HTTP request header that identifies the client making the request. Browsers send their name and version, bots send their crawler name, and cron services send their service identifier. CronJobPro includes its own User-Agent header in all requests, such as "CronJobPro/1.0". This allows your server to identify and log cron-triggered requests separately from regular user traffic.
Simple Analogy
Like a name tag at a conference — it tells the host who is visiting, allowing them to recognize and treat different visitors appropriately.
Why It Matters
The User-Agent header helps you distinguish cron job requests from regular traffic in your server logs. You can use it to apply different rate limits, skip analytics tracking, or route cron requests to specific server pools. Some endpoints also require a valid User-Agent header and reject requests without one.
How to Verify
Check your server access logs for CronJobPro's User-Agent string. In your endpoint code, read the User-Agent header to identify cron requests. In CronJobPro, you can customize the User-Agent header per job if needed.
Common Mistakes
Blocking CronJobPro's User-Agent with a WAF or bot-blocking tool, preventing your cron jobs from executing. Not logging User-Agent, making it hard to distinguish cron traffic from other traffic. Spoofing a browser User-Agent, which may trigger unexpected behavior on the server.
Best Practices
Whitelist CronJobPro's User-Agent in your WAF and bot-blocking rules. Use the User-Agent to filter cron requests from analytics. Log the User-Agent with each request for debugging. Set a descriptive custom User-Agent if integrating with third-party APIs that require one.
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Try it free →Frequently Asked Questions
What is User-Agent?
The User-Agent is an HTTP request header that identifies the client making the request. Browsers send their name and version, bots send their crawler name, and cron services send their service identifier. CronJobPro includes its own User-Agent header in all requests, such as "CronJobPro/1.0". This allows your server to identify and log cron-triggered requests separately from regular user traffic.
Why does User-Agent matter for cron jobs?
The User-Agent header helps you distinguish cron job requests from regular traffic in your server logs. You can use it to apply different rate limits, skip analytics tracking, or route cron requests to specific server pools. Some endpoints also require a valid User-Agent header and reject requests without one.
What are best practices for User-Agent?
Whitelist CronJobPro's User-Agent in your WAF and bot-blocking rules. Use the User-Agent to filter cron requests from analytics. Log the User-Agent with each request for debugging. Set a descriptive custom User-Agent if integrating with third-party APIs that require one.
Related Terms
Request Header
Key-value metadata sent with an HTTP request to provide context like authentication and content type.
IP Whitelisting
Restricting endpoint access to requests from specific trusted IP addresses only.
Endpoint
A specific URL where an API or service receives and processes HTTP requests.
HTTP Method
The verb (GET, POST, PUT, DELETE, etc.) that defines the type of action an HTTP request performs.