example: Add FastMCP example with Unicode characters and emojis

examples/fastmcp/unicode_example.py

@@ -0,0 +1,59 @@
+"""
+Example FastMCP server that uses Unicode characters in various places to help test
+Unicode handling in tools and inspectors.
+"""
+
+from mcp.server.fastmcp import FastMCP
+
+mcp = FastMCP()
+
+
+@mcp.tool(description="🌟 A tool that uses various Unicode characters in its description: á é í ó ú ñ 漢字 🎉")
+def hello_unicode(name: str = "世界", greeting: str = "¡Hola") -> str:
+    """
+    A simple tool that demonstrates Unicode handling in:
+    - Tool description (emojis, accents, CJK characters)
+    - Parameter defaults (CJK characters)
+    - Return values (Spanish punctuation, emojis)
+    """
+    return f"{greeting}, {name}! 👋"
+
+
+@mcp.tool(description="🎨 Tool that returns a list of emoji categories")
+def list_emoji_categories() -> list[str]:
+    """Returns a list of emoji categories with emoji examples."""
+    return [
+        "😀 Smileys & Emotion",
+        "👋 People & Body",
+        "🐶 Animals & Nature",
+        "🍎 Food & Drink",
+        "⚽ Activities",
+        "🌍 Travel & Places",
+        "💡 Objects",
+        "❤️ Symbols",
+        "🚩 Flags"
+    ]
+
+
+@mcp.tool(description="🔤 Tool that returns text in different scripts")
+def multilingual_hello() -> str:
+    """Returns hello in different scripts and writing systems."""
+    return "\n".join([
+        "English: Hello!",
+        "Spanish: ¡Hola!",
+        "French: Bonjour!",
+        "German: Grüß Gott!",
+        "Russian: Привет!",
+        "Greek: Γεια σας!",
+        "Hebrew: !שָׁלוֹם",
+        "Arabic: !مرحبا",
+        "Hindi: नमस्ते!",
+        "Chinese: 你好!",
+        "Japanese: こんにちは!",
+        "Korean: 안녕하세요!",
+        "Thai: สวัสดี!",
+    ])
+
+
+if __name__ == "__main__":
+    mcp.run()