5 JSON Errors That Break APIs (And How to Fix Them)

<p><code>SyntaxError: Unexpected token } in JSON at position 212</code> is one of the least helpful error messages a developer sees. It tells you <em>that</em> the JSON is broken,

<p>I thought formatting JSON solved everything.</p> <p>Whenever I received an API response, I would paste it into a formatter and instantly make it readable.</p> <p>For small

<h1> Stop Manually Editing JSON. Here's a Faster Way to Work With It. </h1> <p>If you've spent any real time as a developer, you've had this moment: a 4,000-line API response

<p>If you write software, you deal with JSON. It's in your API responses, your config files, your logs, your <code>package.json</code>, your test fixtures — everywhere. And yet

<p>A few weeks ago I ran this through our own JSON repair tool, in the browser, on our own website:<br /> </p> <div class="highlight js-code-highlight"> <pre class="highlight

<p>A few years ago, I shipped what looked like a textbook, harmless API update.</p> <p>The endpoint returned valid JSON. Every single local test passed with flying colors. We hit

<p>I was importing a JSON file and it blew up. Not a subtle bug — the parser refused the whole thing. The cause was a single extra comma. After deleting it manually, the import