Peekaboo MCP

import Foundation enum MCPCommandError: Error { case invalidArguments } enum MCPArgumentParsing { static func parseJSONObject(_ raw: String) throws -> [String: Any] { let trimmed = raw.trimmingCharacters(in: .whitespacesAndNewlines) if trimmed.isEmpty || trimmed == "null" { return [:] } guard let data = trimmed.data(using: .utf8) else { throw MCPCommandError.invalidArguments } let obj = try JSONSerialization.jsonObject(with: data, options: []) guard let dict = obj as? [String: Any] else { throw MCPCommandError.invalidArguments } return dict } static func parseKeyValueList(_ pairs: [String], label _: String) throws -> [String: String] { var result: [String: String] = [:] result.reserveCapacity(pairs.count) for pair in pairs { guard let idx = pair.firstIndex(of: "=") else { throw MCPCommandError.invalidArguments } let key = String(pair[..<idx]) let value = String(pair[pair.index(after: idx)...]) guard !key.isEmpty else { throw MCPCommandError.invalidArguments } result[key] = value } return result } }