Gambit, an open-source agent harness for building reliable AI agents

Gambit is a new open-source framework that helps developers build more reliable AI agents by breaking down complex workflows into small, typed "decks" with clear inputs, outputs, and safety guardrails instead of using single massive prompts. The tool addresses common problems like brittle orchestration, high costs from oversized context, and difficult debugging by providing local testing capabilities, streaming traces, and a built-in debug interface.