fix: memory_server.py — MCP-сервер для управления памятью агента

memory_server.py

@@ -0,0 +1,106 @@
+import json
+import fnmatch
+from datetime import datetime
+from pathlib import Path
+from typing import Any, Optional, List, Dict
+
+from fastmcp import FastMCP
+
+
+class MemoryServer:
+    def __init__(self):
+        self.mcp = FastMCP("Memory-Server")
+        self.storage_path = Path("./memory_data.json")
+        # Register tools
+        self._register_tools()
+
+    def _load_memory(self) -> Dict[str, dict]:
+        if not self.storage_path.exists():
+            return {}
+        with self.storage_path.open("r", encoding="utf-8") as f:
+            return json.load(f)
+
+    def _save_memory(self, data: Dict[str, dict]) -> None:
+        self.storage_path.parent.mkdir(parents=True, exist_ok=True)
+        with self.storage_path.open("w", encoding="utf-8") as f:
+            json.dump(data, f, indent=2, ensure_ascii=False)
+
+    def _validate_key(self, key: str) -> bool:
+        # Disallow path traversal characters
+        return ".." not in key and "/" not in key and "\\" not in key
+
+    def _register_tools(self):
+        @self.mcp.tool()
+        def save(key: str, value: Any) -> bool:
+            """Save a value under a key."""
+            if not self._validate_key(key):
+                return False
+            data = self._load_memory()
+            data[key] = {"value": value, "timestamp": datetime.utcnow().isoformat()}
+            self._save_memory(data)
+            return True
+
+        @self.mcp.tool()
+        def get(key: str) -> Optional[dict]:
+            """Retrieve a value with metadata."""
+            if not self._validate_key(key):
+                return None
+            data = self._load_memory()
+            entry = data.get(key)
+            if entry is None:
+                return None
+            return {"key": key, "value": entry["value"], "timestamp": entry["timestamp"]}
+
+        @self.mcp.tool()
+        def delete(key: str) -> bool:
+            """Delete a key."""
+            if not self._validate_key(key):
+                return False
+            data = self._load_memory()
+            if key in data:
+                del data[key]
+                self._save_memory(data)
+                return True
+            return False
+
+        @self.mcp.tool()
+        def list_keys(pattern: str = "*") -> List[str]:
+            """List keys matching a wildcard pattern."""
+            data = self._load_memory()
+            return [k for k in data.keys() if fnmatch.fnmatch(k, pattern)]
+
+        @self.mcp.tool()
+        def save_with_namespace(key: str, value: Any, namespace: str = "default") -> bool:
+            """Save a value with a namespace."""
+            if not self._validate_key(key) or not self._validate_key(namespace):
+                return False
+            full_key = f"{namespace}:{key}"
+            return save(full_key, value)
+
+        @self.mcp.tool()
+        def get_by_namespace(namespace: str = "default") -> List[dict]:
+            """Get all entries from a namespace."""
+            if not self._validate_key(namespace):
+                return []
+            data = self._load_memory()
+            prefix = f"{namespace}:"
+            result = []
+            for k, v in data.items():
+                if k.startswith(prefix):
+                    result.append(
+                        {
+                            "key": k[len(prefix) :],
+                            "value": v["value"],
+                            "timestamp": v["timestamp"],
+                        }
+                    )
+            return result
+
+
+if __name__ == "__main__":
+    server = MemoryServer()
+    server.mcp.run(
+        transport="stdio",
+        show_banner=False,
+        log_level="ERROR",
+    )