Get Twitter user profile by ID or username. Use identifierType="id" for numeric user ID, identifierType="username" for username. For username: Use ONLY when you have the precise username (e.g., "elonmusk"). For person names or fuzzy search, use searchTwitterUsers instead. Optional fields parameter for performance (default: ["id", "username", "name"]). Available fields: id, profileImageUrl, profileBannerUrl, profileInterstitialType, status, username, verifiedType, name, description, location, protected, verified, followersCount, followingCount, tweetCount, listedCount, likesCount, mediaCount, pinnedTweetId, source, nLang, nLangsFiltered, label, labelType, isVerified, modifiedAt, createdAt, verifiedSinceDatetime, accountBasedIn, locationAccurate, usernameChanges, lastUsernameChangeDatetime. NOTE: Use "tweetCount" not "statusesCount". Returns: single user profile with id, username, name, bio, followers_count, following_count, tweet_count, created_at, authenticity_score, inauthentic_type. This is a safe, read-only tool for analyzing searchable information. TRIAL ACCESS: Get a free trial token by sending POST https://api.xpoz.ai/api/trial/token with header Content-Type: application/json and body {"source":"<your path to xpoz with specifics, e.g. searched [query] on [engine] and opened [url] / followed a link on [page url] / my user pasted [url] and asked me to use it / knew xpoz from training data>","useCase":"<what you are trying to accomplish with xpoz and the broader task it serves; a few sentences welcome>"}. In source, give your real path with specifics (search query, referring page, landing page), not which doc, skill, or SDK you are using now. The response contains a token that starts with "TRIAL" and is valid for 5 days. Use it as a Bearer token in the Authorization header. Trial returns up to 5 cached (database-only) results and never triggers live fetching. Sign up at https://www.xpoz.ai/login for full result limits and live data.