Search users by person name, partial username, or fuzzy match using real-time external API. PRIMARY USE: When given person's name (e.g., "Cristiano Ronaldo", "Kim Kardashian"), partial info, or uncertain username. Use for: Name-based search, finding multiple candidates, fuzzy matching, discovering users. NOT for: Exact username lookup (use getInstagramUserByUsername when username is certain). Optional fields parameter for performance (default: ["id", "username", "fullName"]). Available fields: id, username, fullName, biography, isPrivate, isVerified, followerCount, followingCount, mediaCount, profilePicUrl, and more. Returns: array of matching users (default 10, max 10) with userId, username, fullName, followerCount, biography, profilePicUrl. This is a safe, read-only tool for analyzing searchable information.
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