minecraft-session-token-account-info.js

// thanks to gapple.pw for the very well made docs (https://mojang-api-docs.gapple.pw/)
// thanks to wiki.vg for teaching me microsoft auth scheme (https://wiki.vg/Microsoft_Authentication_Scheme)

const axios = require(`axios`)

async function getUsernameAndUUID(bearerToken) {
    try {
        const url = 'https://api.minecraftservices.com/minecraft/profile';
        const config = {
            headers: {
                "Authorization": `Bearer ${bearerToken}`,
            }
        };

        const response = await axios.get(url, config);

        if (response.status !== 200) {
            throw new Error(`Failed to retrieve data from the Minecraft API. Status code: ${response.status}`);
        }

        if (response.data.error === "NOT_FOUND") {
            throw new Error(`Minecraft profile not found for the provided bearer token.`);
        }

        const { id, name } = response.data;
        return {
            uuid: id,
            username: name
        };
    } catch (error) {
        console.error('Error while fetching Minecraft profile: ', error.message);
        return null;
    }
}

// usage: 
// const token = `eyJraWQiOiJhYzg0YSIsImFsZyI6IkhTMjU2In0.eyJ4dWlkIjoiMjUzNTQ...`
// const accountData = await getUsernameAndUUID(token)
// 
// console.log(`uuid: ${accountData.uuid} | username: ${accountData.username}`