Assignment_mcp_server

The authentication mechanism uses robust methods (PBKDF2 for secret hashing, JWT tokens for sessions) and access control is implemented at the dataset level. However, the `bq.run_query` tool directly executes arbitrary SQL queries provided by the client. While this is the intended function, it poses a significant SQL injection risk if the calling MCP client is compromised or if the `query` argument is not properly validated/sanitized by the client before being sent to the server. The server itself does not appear to perform SQL sanitization, relying on the client's integrity. No `eval` or `exec` found. Hardcoded secrets are explicitly warned against and the `register_client.py` script helps generate strong credentials.