Worked on moltbot/moltbot to enhance the OpenAI Completions Streaming Parser, focusing on reliable parallel tool call handling. Used TypeScript and full stack development skills to implement a mapping system that tracks tool call indices and IDs, ensuring accurate accumulation of arguments and preventing phantom or misrouted tool calls during streaming. Introduced WeakMap-based internal byte-tracking to keep scratch state private and refactored ToolCallBlock typings for improved CI stability. Added regression tests to validate multi-slot parallel calls and delta updates, resulting in more reliable multi-tool automation and accurate transcripts for scalable, complex workflow automation. Emphasized robust testing throughout development.