Query Result Serialization To Json With Type Preservation

A Model Context Protocol (MCP) server that enables secure interaction with MySQL databases

Unique: Implements automatic type mapping from MySQL types to JSON-compatible representations, preserving semantic type information (e.g., DATETIME as ISO 8601 strings, DECIMAL as numeric strings) rather than converting all values to generic strings

vs others: More semantically rich than generic CSV export because type information is preserved, enabling AI to reason about data types, and more precise than floating-point conversion because DECIMAL types are serialized as strings to avoid precision loss

via “sql query result serialization for mcp transport”

A PostgreSQL MCP server built with @modelcontextprotocol/sdk.

Unique: Leverages the pg library's built-in type parsing to handle PostgreSQL-specific types, then applies custom serialization logic to convert them to JSON. Preserves type information in the response so the LLM understands the semantic meaning of each field.

vs others: More complete than simple JSON.stringify() and more maintainable than custom type handlers, as it builds on pg's type system which is updated with PostgreSQL versions.