Yahoo Finance Api V8 Example Google App Script

Code.gs

function yahooF(ticker) {
  const url = `https://query1.finance.yahoo.com/v8/finance/chart/${ticker}`;
  
  const res = UrlFetchApp.fetch(url, {muteHttpExceptions: true});  
  const contentText = res.getContentText();
  const data = JSON.parse(contentText);
 
  // Check if the result exists and has data
  if (data && data.chart && data.chart.result && data.chart.result.length > 0) {
    const regularMarketPrice = data.chart.result[0].meta.regularMarketPrice;
    console.log(regularMarketPrice);
    return regularMarketPrice;
  } else {
    console.log("Error: Unable to retrieve market price.");
    return null;
  }
}

Thanks for this updated function. It used to run great, but lately it gives this error many many times: SyntaxError: Unexpected token 'E', "Edge: Not Found" is not valid JSON in this line: const data = JSON.parse(contentText);

It seems like yahoo are fighting against this script.

Same problem here. As a workaround I replaced the line

const data = JSON.parse(contentText);

by this block of code:

data = null;
try {
data = JSON.parse(contentText);
} catch (error) {
return yahooF(ticker)
}

So basically that makes the function recursive until the JSON.parse succeeds.