Developer builds agent that distinguishes pygame from pygame-ce documentation accurately

A developer has built a documentation agent to address a persistent confusion between pygame and pygame-ce, two incompatible Python game library distributions that share the same namespace but have diverging APIs. The agent was submitted to the Sanity Challenge and uses Sanity's MCP endpoint to query the API reference pages of both libraries — 42 pages each — without blending their content. Every response explicitly names which distribution a feature belongs to, the version it appeared in, and its source entry. The agent appends machine-readable verdict lines to each answer, clearly flagging whether a function exists in pygame, pygame-ce, or both. This approach tackles a common pain point where tutorials and AI-generated code snippets rarely specify which distribution they target, leaving developers with cryptic AttributeError messages.