Can i automate the flow, why selection custom(my own) condition?

[anna_geller]

Regarding API-based event-driven workflows, check this post:

Is there an equivalent to sensors in Prefect? How do I trigger event-driven workflows?

There are a couple of ways how you could approach that problem. 1. State-based execution with signals If you look more closely at what sensors are doing, they are polling for some state (e.g. whether a file arrived in S3/SFTP) and if the condition is not met, the sensor sleeps and tries again in a couple of seconds/minutes later. If you want to implement something similar in Prefect, you could leverage the RETRY signal to implement such polling. Here is an example checking if “example_file.c…

If you are just getting started with Prefect, check this topic:
https://discourse.prefect.io/t/should-i-start-with-prefect-2-0-orion-skipping-prefect-1-0/544

@Vishwash_Singh

can i write flow directly on prefect ?

You would need to install Prefect via pip, write Python code to create your flow, then register to schedule it.

I highly encourage you to try this Prefect 2.0 getting started guide:
https://orion-docs.prefect.io/getting-started/overview/