bnnbloomberg-markets-api

A JS wrapper for retrieval of close-to-realtime market data from BNN Bloomberg's unauthenticated API.

By default it provides data on all stocks listed here, but you can change the URI to data about other exchanges, individual securities, and/or do some digging to find out what else the API has in store...

Notes

When using this tool to make client-side queries from the browser, data.bnn.ca will reject all queries based on CORS policy. To resolve this, you can run a CORS-Anywhere server and prefix your URIs with the server's URL. See config.js. If you are planning to use this tool server-side or locally, corsProxy can remain empty without issue.

Usage

Pass to build() the ticker for a particular stock, for example "AAPL:UN". (you can figure out BNN Bloomberg's ticker naming conventions by searching stocks on their site).

Alternatively, pass "us" or "ca" for a summary of the NYSE or TSX, respectively.

Call quote() to retrieve the most current data. The response will look something like this:

statusCode: 200,
generatedTimestamp: '2020-10-10T13:45:21.574',
duration: 141,
data: {
  stocks: [
    {
      symbol: 'AC:CT',
      name: 'AIR CANADA',
      currency: 'CAD',
      price: 16.09,
      netChng: -0.67,
      pctChng: -4,
      htsclsdate: '2020-10-09',
      tradeDate: '09 Oct 2020',
      yearHigh: 52.71,
      yearLow: 9.26,
      yearHighDate: '2020-01-14',
      yearLowDate: '2020-03-18',
      totalVolume: 4314594
    }
  ],
  invalidSymbols: []
}

Example

git clone https://github.com/vxsl/bnnbloomberg-markets-api.git
cd bnnbloomberg-markets-api; npm i; cd ..

const { QuoteHarvester } = require("./bnnbloomberg-markets-api")

!async function () {    

    let q = await QuoteHarvester.build("AC:CT")
    // QuoteHarvester.build("ca")       //      A summary of the market (Canada or US) is also possible.
    // QuoteHarvester.build("us")       //      ...see params.js if you wish to look into it further.
    
    while (true) {        
        let quote = await q.quote()
        console.log(quote)
        // do something with data (of particular interest are quote.data and quote.generatedTimestamp)
    }
}();

Disclaimer

Use at your own risk. Incorporates spoofing of headers and other questionable tactics.