Does every HTTP outcall cost around 20 cents?

I’ve been using HTTP outcalls, ran out of cycles, and I checked and saw

Call was rejected:
Reject code: 4
Reject text: http_request request sent with 0 cycles, but 210121000000 cycles are required.

Does that mean that every time we make an HTTP outcall request we must pay ~20 cents?

It seems incredibly expensive for a single call.

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For example, if you want to use that for a price feed, calling 5 sources once per minute to update the price would cost ~ 0.2 x 5 x 60 x 24 x 365 = ~500k USD per year.

A more realistic, reliable price oracle would probably require ~20 sources every 5 or so seconds:

0.2 x 20 x 12 x 60 x 24 x 365 = ~25M dollars per year.

It’s expensive actually, but it also depends on max_response_bytes, if you don’t specify some value, it will take by default maximum 2000 (I guess).

Check Pricing of Http outcall!


Can you dramatically reduce the price per call by dramatically reducing max_response_bytes?

check this for pricing.

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Thank you.

By reducing the paylaod, the cost went down by a factor of ~300.

That makes it usable. Still expensive for a high quality feed running 24/7 but it can be worked with.

For future readers: no, it doesn’t cost 20 cents per call. It only costs that if you use the maximum 2MB payload.