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Asset Price External Adaptor Build codecov

External Adaptor for Chainlink which aggregates prices of crypto assets from multiple exchanges based on a weighted average of their volume.

This adaptor is built using the bridges framework:

Currently Supported Exchanges:

  • Binance
  • Bitfinex
  • Bitstamp (highly rate limited)
  • Bittrex
  • Coinall
  • Coinbase Pro
  • HitBTC
  • Huobi Pro
  • Kraken
  • Gemini
  • ZB

Setup Instructions

Local Install

Make sure Golang is installed.


make build

Then run the adaptor:

./asset-price-cl-ea -p <port> -t <tickerInterval>
Char Default Usage
p 8080 Port number to serve
t 1m0s Ticker interval for the adaptor to refresh supported trading pairs, suggested units: s, m, h


To run the container:

docker run -it -p 8080:8080 -e PORT=8080 linkpoolio/asset-price-cl-ea

Container also supports passing in CLI arguments.

AWS Lambda

  1. Build the executable:
    GO111MODULE=on go build -o asset-price
  2. Add the file to a ZIP archive:
    zip ./asset-price
  3. Upload the the zip file into AWS and then use asset-price as the handler.
  4. Set the LAMBDA environment variable to true in AWS for the adaptor to be compatible with Lambda.

GCP Functions

  1. Change into the app directory:
    cd app
  2. Deploy into GCP
    gcloud functions deploy asset-price --runtime go111 --entry-point Handler --trigger-http


To call the API, you need to send a POST request to http://localhost:<port>/price with the request body being of the ChainLink RunResult type.

For example:

curl -X POST -H 'Content-Type: application/json' -d '{ "jobRunId": "1234", "data": { "base": "BTC", "quote": "USD" }}' http://localhost:8080/price

Should return something similar to:

    "jobRunId": "1234",
    "data": {
        "base": "BTC",
        "quote": "USD",
        "id": "BTC-USD",
        "result": 3836.4042305857843,
        "price": "3836.4042305857843",
        "volume": "131747894.87525243",
        "usdPrice": "3836.4042305857843",
        "exchanges": [
        "warnings": null
    "status": "",
    "error": null,
    "pending": false


curl -X POST -H 'Content-Type: application/json' -d '{ "jobRunId": "1234", "data": { "base": "LINK", "quote": "ETH" }}' http://localhost:8080/price
    "jobRunId": "1234",
    "data": {
        "base": "LINK",
        "quote": "ETH",
        "id": "LINK-ETH",
        "result": 0.0031786459052877327,
        "price": "0.0031786459052877327",
        "volume": "797.6642187877999",
        "usdPrice": "0.43956635389465454",
        "exchanges": [
        "warnings": null
    "status": "",
    "error": null,
    "pending": false

ChainLink Node Setup

To integrate this adaptor with your node, follow the official documentation:

Solidity Usage

To use this adaptor on-chain, you can create the following Chainlink request:

Chainlink.Request memory req = buildChainlinkRequest(jobId, this, this.fulfill.selector);
req.add("base", "LINK");
req.add("quote", "BTC");
req.add("copyPath", "price");
req.addInt("times", 100000000);

Allowing you to change base and quote to any trading pair.


We welcome any contributors. The more exchanges supported, the better. Feel free to raise any PR's or issues.


External Adaptor for Chainlink which aggregates prices of crypto assets from multiple exchanges.




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