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Verify JWT Token using API (serverless)

If you don't have a backend server, for example, if you're using Webflow, we have provided an API endpoint to validate the access token from Cotter.
post
https://worker.cotter.app
/verify
Verify JWT Token from Cotter
Example HTTP Request:
POST https://worker.cotter.app/verify
Content-Type: application/json
API_KEY_ID: <YOUR API KEY ID>
{
"oauth_token": {
"access_token": "eyJhbGciOiJFUzI1Ni...",
"id_token": "eyJhbGciOiJFUzI1NiIsIm...",
"refresh_token": "55185:BjD1Hh8ea...",
"expires_in": 3600,
"token_type": "Bearer",
"auth_method": "OTP"
}
}

Example with Javascript:

<!--Get Cotter JS SDK-->
<script
src="https://unpkg.com/[email protected]/dist/cotter.min.js"
type="text/javascript"
></script>
<script>
async function checkAccessToken() {
// 1. Get the logged-in user's access token
let cotter = new Cotter("API_KEY_ID"); // 👈 Specify your API KEY ID here
let token = await cotter.tokenHandler.getAccessToken();
var accessToken = token?.token;
// 2. Construct the body
let body = {
oauth_token: {
access_token: accessToken
}
};
// 3. If user is logged in then we fetch the user data
let url = "https://worker.cotter.app/verify";
fetch(url, {
method: "POST",
cache: "no-cache",
headers: {
"Content-Type": "application/json",
API_KEY_ID: "API_KEY_ID" // 👈 Specify your API KEY ID here
},
mode: "cors",
body: JSON.stringify(body)
})
.then((resp) => resp.json())
.then((data) => {
if (!data.success) {
window.location.href = "/login"; // Redirect to your login page
} else {
console.log("Token is valid!");
}
});
}
</script>