Cypher fix params parsing issue (#104)

* fix param arg parsing issue with pydantic

* Update CHANGELOG.md

Author: a-s-g93

servers/mcp-neo4j-cypher/CHANGELOG.md

@@ -10,6 +10,7 @@
 
 ### Fixed
 * Updated the `get_neo4j_schema` tool to include Relationship properties as well
+* Fix bug where `params` arg wouldn't be parsed correctly
 
 ### Changed
 * Update error handling in read and write tools

servers/mcp-neo4j-cypher/pyproject.toml

@@ -5,7 +5,7 @@ description = "A simple Neo4j MCP server"
 readme = "README.md"
 requires-python = ">=3.10"
 dependencies = [
-    "fastmcp>=2.2.7",
+    "fastmcp>=2.10.5",
     "neo4j>=5.26.0",
     "pydantic>=2.10.1",
 ]

servers/mcp-neo4j-cypher/src/mcp_neo4j_cypher/server.py

@@ -170,8 +170,8 @@ def clean_schema(schema: dict) -> dict:
                                           ))
     async def read_neo4j_cypher(
         query: str = Field(..., description="The Cypher query to execute."),
-        params: Optional[dict[str, Any]] = Field(
-            None, description="The parameters to pass to the Cypher query."
+        params: dict[str, Any] = Field(
+            dict(), description="The parameters to pass to the Cypher query."
         ),
     ) -> list[ToolResult]:
         """Execute a read Cypher query on the neo4j database."""
@@ -204,8 +204,8 @@ async def read_neo4j_cypher(
                                           ))
     async def write_neo4j_cypher(
         query: str = Field(..., description="The Cypher query to execute."),
-        params: Optional[dict[str, Any]] = Field(
-            None, description="The parameters to pass to the Cypher query."
+        params: dict[str, Any] = Field(
+            dict(), description="The parameters to pass to the Cypher query."
         ),
     ) -> list[ToolResult]:
         """Execute a write Cypher query on the neo4j database."""