Free API60 req/minDeveloper Tools
Cron Expression Explainer
Validate and describe standard 5-field cron schedules used by jobs and workers.
By RSM DevOps
Public endpoint
GET
crongen.apiseeker.com/v1/explainAuth: X-SEEKER-Key
Endpoint
Uses minute hour day-of-month month day-of-week fields.
Method
GET
Path
/v1/explain
Full URL
https://crongen.apiseeker.com/v1/explainAuthentication
Send X-SEEKER-Key on every request. Free tools still require a valid APISeeker key — no auth bypass.
Parameters
exprquerystringrequired5-field cron expression
Request example
cURL
curl -s "https://crongen.apiseeker.com/v1/explain?expr=0%209%20*%20*%201-5" \
-H "X-SEEKER-Key: YOUR_API_KEY"Response example
JSON
{
"success": true,
"data": {
"expression": "0 9 * * 1-5",
"valid": true,
"summary": "At minute 0 of hour 9, every day of month, every month, on weekdays Mon–Fri"
},
"request_id": "req_example"
}Errors & limits
- 400Invalid or missing parameters
- 401Missing or invalid API key
- 429Rate limit exceeded
Rate limit: 60 req/min
Playground
Live playground
Cron Expression Explainer
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GETRequest URL
https://crongen.apiseeker.com/v1/explain?expr=0+9+*+*+1-5Status: —Latency: —
Response
Response will appear here after you send a request.