fix: Add UTF-8 encoding support for non-ASCII characters

src/mcp_obsidian/obsidian.py

@@ -119,8 +119,8 @@ def append_content(self, filepath: str, content: str) -> Any:
         def call_fn():
             response = requests.post(
                 url, 
-                headers=self._get_headers() | {'Content-Type': 'text/markdown'}, 
-                data=content,
+                headers=self._get_headers() | {'Content-Type': 'text/markdown; charset=utf-8'}, 
+                data=content.encode('utf-8'),
                 verify=self.verify_ssl,
                 timeout=self.timeout
             )
@@ -133,14 +133,14 @@ def patch_content(self, filepath: str, operation: str, target_type: str, target:
         url = f"{self.get_base_url()}/vault/{filepath}"
 
         headers = self._get_headers() | {
-            'Content-Type': 'text/markdown',
+            'Content-Type': 'text/markdown; charset=utf-8',
             'Operation': operation,
             'Target-Type': target_type,
             'Target': urllib.parse.quote(target)
         }
 
         def call_fn():
-            response = requests.patch(url, headers=headers, data=content, verify=self.verify_ssl, timeout=self.timeout)
+            response = requests.patch(url, headers=headers, data=content.encode('utf-8'), verify=self.verify_ssl, timeout=self.timeout)
             response.raise_for_status()
             return None
 
@@ -152,8 +152,8 @@ def put_content(self, filepath: str, content: str) -> Any:
         def call_fn():
             response = requests.put(
                 url, 
-                headers=self._get_headers() | {'Content-Type': 'text/markdown'}, 
-                data=content,
+                headers=self._get_headers() | {'Content-Type': 'text/markdown; charset=utf-8'}, 
+                data=content.encode('utf-8'),
                 verify=self.verify_ssl,
                 timeout=self.timeout
             )

src/mcp_obsidian/server.py

@@ -1,10 +1,17 @@
 import json
 import logging
+import sys
+import io
 from collections.abc import Sequence
 from functools import lru_cache
 from typing import Any
 import os
 from dotenv import load_dotenv
+
+# Force UTF-8 encoding for stdout/stderr on Windows
+if sys.platform == 'win32':
+    sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8', errors='replace')
+    sys.stderr = io.TextIOWrapper(sys.stderr.buffer, encoding='utf-8', errors='replace')
 from mcp.server import Server
 from mcp.types import (
     Tool,

src/mcp_obsidian/tools.py

@@ -51,7 +51,7 @@ def run_tool(self, args: dict) -> Sequence[TextContent | ImageContent | Embedded
         return [
             TextContent(
                 type="text",
-                text=json.dumps(files, indent=2)
+                text=json.dumps(files, indent=2, ensure_ascii=False)
             )
         ]
 
@@ -87,7 +87,7 @@ def run_tool(self, args: dict) -> Sequence[TextContent | ImageContent | Embedded
         return [
             TextContent(
                 type="text",
-                text=json.dumps(files, indent=2)
+                text=json.dumps(files, indent=2, ensure_ascii=False)
             )
         ]
 
@@ -123,7 +123,7 @@ def run_tool(self, args: dict) -> Sequence[TextContent | ImageContent | Embedded
         return [
             TextContent(
                 type="text",
-                text=json.dumps(content, indent=2)
+                text=json.dumps(content, indent=2, ensure_ascii=False)
             )
         ]
 
@@ -185,7 +185,7 @@ def run_tool(self, args: dict) -> Sequence[TextContent | ImageContent | Embedded
         return [
             TextContent(
                 type="text",
-                text=json.dumps(formatted_results, indent=2)
+                text=json.dumps(formatted_results, indent=2, ensure_ascii=False)
             )
         ]
 
@@ -430,7 +430,7 @@ def run_tool(self, args: dict) -> Sequence[TextContent | ImageContent | Embedded
        return [
            TextContent(
                type="text",
-               text=json.dumps(results, indent=2)
+               text=json.dumps(results, indent=2, ensure_ascii=False)
            )
        ]
 
@@ -580,7 +580,7 @@ def run_tool(self, args: dict) -> Sequence[TextContent | ImageContent | Embedded
         return [
             TextContent(
                 type="text",
-                text=json.dumps(results, indent=2)
+                text=json.dumps(results, indent=2, ensure_ascii=False)
             )
         ]
 
@@ -627,6 +627,6 @@ def run_tool(self, args: dict) -> Sequence[TextContent | ImageContent | Embedded
         return [
             TextContent(
                 type="text",
-                text=json.dumps(results, indent=2)
+                text=json.dumps(results, indent=2, ensure_ascii=False)
             )
         ]