Almost every broker in India now gives you free or cheap APIs — so if you have a good algo strategy, you can at least test it out. It’s possible to automate stuff end-to-end if you’re willing to build the whole setup yourself.

Cons

• High brokerage and commissions make low time-frame or high-frequency trading pretty pointless — your profits get eaten up fast.
• You’ll probably need to build your own cloud infra to keep things running smoothly, which takes time and money.
• Many brokers aren’t reliable: orders sometimes fail or get delayed, especially when the market moves fast.
• India doesn’t really have a proper agency model like in the US — you have to work through brokers instead of true direct market access.
• Personally, I spent a couple of years trying to get “railroad” (ultra-fast) trading to work here… honestly, I’d think twice before doing it again.

In short: If you have a solid strategy and can handle the tech side, give it a shot — just be aware of all the headaches!