Cross Prices

Cross Prices can also be accessed via on-chain delivery to power any smart contract. Learn how to set it up here.

What is this endpoint for?

Cross Prices calculates a synthetic price when there is no liquidity (historic trades) between two assets (fiat or digital). The methodology is developed with global tax and accounting standards in mind. Additionally, our robust price aggregation method reduces the impact of outliers in terms of volume and price, meaning you can trust the price returned.

The calculation works as follows:

1. Retrieve the last available optimal liquidity path

2. Listen to trades for all intermediary pairs from all covered exchanges where the instrument is actively traded

3. Compute RWM price for each intermediary pair

4. Compute the product of intermediary pairs based on the liquidity path

The calculation considers all instruments traded across all exchanges covered by Kaiko.

Endpoints

gRPC

gateway-v0-grpc.kaiko.ovh

http

gateway-v0-http.kaiko.ovh

API (testing)

https://gateway-v0-http.kaiko.ovh/api/stream/aggregates_spot_exchange_rate_v2

Parameters

Parameter	Description	Examples	Mandatory?
window	The window on which you would like your Cross Price to be calculated. Available windows: 1s, 5s, 15s, 30s, 60s, 300s	15s
update_frequency	How regularly you would like to receive your pricing updates. Available frequencies: 1s, 5s, 10s, 30s, and 1m	1s
assets	A nested object to configure following properties for your stream: base - the base asset you'd like your price to be based on quote - the asset you'd like the price to be quoted in Explore codes in the Instrument Explorer or by using the Reference API endpoint.	btc eur
extrapolate_missing_values	This parameter is set to false by default. Setting it to true means that if there is no trade price available from the calculation window you configured, the last available price (from outside the window) will be used.	false

Exchanges that send their trades late may not be captured in the given sliding window.

Fields

Field	Description
assets	The base and quote assets as configured above.
price	The calculated Cross Price.
timestamp	The time the Cross Price was calculated.
window	A nested object containing the following fields: startTime - The start of the calculation window for this Cross Price endTime - The end of the calculation window for this Cross Price Duration - The window as configured above
noTrade	If false a price was able to be calculated within the window provided. If true the extrapolate_missing_values parameter was needed to calculate a price.

Request examples

Python

Make sure to read our Python quick-start guide before starting.

 # This is a code example. Configure your parameters in the parameter configuration section #

from __future__ import print_function
import logging
import os

import grpc
from google.protobuf.json_format import MessageToJson
from google.protobuf import duration_pb2

from kaikosdk import sdk_pb2_grpc
from kaikosdk.core import instrument_criteria_pb2, assets_pb2
from kaikosdk.stream.aggregates_ohlcv_v1 import request_pb2 as pb_ohlcv
from kaikosdk.stream.aggregates_vwap_v1 import request_pb2 as pb_vwap
from kaikosdk.stream.market_update_v1 import request_pb2 as pb_market_update
from kaikosdk.stream.market_update_v1 import commodity_pb2 as pb_commodity
from kaikosdk.stream.trades_v1 import request_pb2 as pb_trades
from kaikosdk.stream.index_v1 import request_pb2 as pb_index
from kaikosdk.stream.index_multi_assets_v1 import request_pb2 as pb_index_multi_assets
from kaikosdk.stream.index_forex_rate_v1 import request_pb2 as pb_index_forex_rate
from kaikosdk.stream.aggregated_quote_v2 import request_pb2 as pb_aggregated_quote
from kaikosdk.stream.aggregates_spot_exchange_rate_v2 import request_pb2 as pb_spot_exchange_rate
from kaikosdk.stream.aggregates_direct_exchange_rate_v2 import request_pb2 as pb_direct_exchange_rate

def aggregates_spot_exchange_rate_request(channel: grpc.Channel):
    try:
        with channel:
            stub = sdk_pb2_grpc.StreamAggregatesSpotExchangeRateV2ServiceV1Stub(channel)
 # confiugure your window and frequency #
            window = duration_pb2.Duration()
            window.FromSeconds(10)

            update_frequency = duration_pb2.Duration()
            update_frequency.FromSeconds(2)

            responses = stub.Subscribe(pb_spot_exchange_rate.StreamAggregatesSpotExchangeRateV2RequestV1(
 # confiugure your assets #
                assets = assets_pb2.Assets(
                    base = "eth",
                    quote = "usd"
                ),
                
               # End of parameter configuration#
                window = window,
                update_frequency = update_frequency
            ))
            for response in responses:
                print("Received message %s" % (MessageToJson(response, including_default_value_fields = True)))
    except grpc.RpcError as e:
        print(e.details(), e.code())
        
def run():
    credentials = grpc.ssl_channel_credentials(root_certificates=None)
    call_credentials = grpc.access_token_call_credentials(os.environ['KAIKO_API_KEY'])
    composite_credentials = grpc.composite_channel_credentials(credentials, call_credentials)
    channel = grpc.secure_channel('gateway-v0-grpc.kaiko.ovh', composite_credentials)

    aggregates_spot_exchange_rate_request(channel)

if __name__ == '__main__':
    logging.basicConfig()
    run()

cURL

cURL requests are intended for testing purposes only.

curl -X POST "https://gateway-v0-http.kaiko.ovh/api/stream/aggregates_spot_exchange_rate_v2" -H "accept: application/json" -H "X-Api-Key: $KAIKO_API_KEY" -H "Content-Type: application/json" -d "{ \"assets\": { \"base\": \"eth\", \"quote\": \"usd\" }, \"window\": \"5s\"}"

BigQuery

Information from this endpoint can be accessed through Google BigQuery. To get started, read our guide.

Other examples

For more advanced users, you can access our full SDK here, where you'll find more coding languages, examples, and guidance.

Response Example

{
  "assets": {
    "base": "eth",
    "quote": "usd"
  },
  "price": 2629.972960779576,
  "timestamp": "2024-08-12T10:35:06.026554200Z",
  "window": {
    "startTime": "2024-08-12T10:34:56Z",
    "endTime": "2024-08-12T10:35:06Z",
    "duration": "10s"
  },
  "noTrade": false
}