Return ladders based on date/expiration or historical based on ticker/exp/call/put

[jmaslek]

Currently, one needs the chain ID (i.e 'AAPL210730C00145000'). Would it be possible to either have an endpoint that returns all of those chain numbers based on the ticker, expiration and call/put, or be able to call historical based on those parameters.

[Tyruiop]

I implemented the following API call
curl -X GET https://api.syncretism.io/ops/expirations/AAPL

I think that combined with the ladder call (e.g. curl -X GET https://api.syncretism.io/ops/ladder/PAYO/C/1626393600) it should allow you to do what you want, waiting for your reply to close the issue 🙏

[jmaslek]

So having the expirations is awesome! Is it possible to do something that could be like (that lists all possible contracts):

curl -X GET https://api.syncretism.io/ops/contracts/{ticker}/{timestamp}

This would avoid having to loop through each expiration to get the ladder -> contractSymbol

[Tyruiop]

Isn't this equivalent to doing
curl -X GET https://api.syncretism.io/ops/ladder/PAYO/C/1626393600
followed by curl -X GET https://api.syncretism.io/ops/ladder/PAYO/P/1626393600

the idea would be to do both in one request and to only return the contract symbols ?

[jmaslek]

Pretty much. I am thinking the equivalent of the finance: Ticker("AAPL").option_chains(date).calls["contractSymbol"] merged with Ticker("AAPL").option_chains(date).puts["contractSymbol"] which returns the following:

I am not sure exactly how the API's are done, but I would imagine a json response like {'call': call_chain_ids , 'puts': call_chain_ids}.

That may not be super clear or not super helpful to have for you.

[Tyruiop]

Done! You can try curl -X GET https://api.syncretism.io/ops/chain/PAYO/1626393600 to experiment with it, and thanks for the feature request!

[jmaslek]

Awesome thanks! And what is the time stamp, I presume UNIX seconds?

[Tyruiop]

Yes, and even more specifically, it needs to be one of the timestamps provided by curl -X GET https://api.syncretism.io/ops/expirations/PAYO