The Agent Said It Was Done. The Database Disagreed.
Enterprise Article Published October 3, 2026 Upvote - Tuhin Kundu tuhink Follow microsoft A tool call is not an outcome One success is not reliability Can you depend on the model behind your agent? Figure 1: ThinkingBox runs an agent against isolated MCP tool sessions, then grades the terminal backend state and side effects it leaves behind. This is a joint blog by Microsoft and Hugging Face, special thanks to Tommy Guy (founder at Enderis AI, previously Microsoft), Sergio Paniego from Hugging Face and our former interns Zhuochun Li (University of Pittsburgh), Ali Keramati (UC Irvine),Youngmin Ko (Northwestern) for co-authoring/reviewing efforts.
- ▪Enterprise Article Published October 3, 2026 Upvote - Tuhin Kundu tuhink Follow microsoft A tool call is not an outcome One success is not reliability Can you depend on the model behind your agent?
- ▪Figure 1: ThinkingBox runs an agent against isolated MCP tool sessions, then grades the terminal backend state and side effects it leaves behind.
- ▪This is a joint blog by Microsoft and Hugging Face, special thanks to Tommy Guy (founder at Enderis AI, previously Microsoft), Sergio Paniego from Hugging Face and our former interns Zhuochun Li (University of Pittsburgh), Ali Keramati (UC
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| Original publisher | Hugging Face Blog |
| Canonical URL | https://huggingface.co/blog/microsoft/thinkingbox |
| Publication time | Sat, 03 Oct 2026 22:46:38 GMT |
| Retrieval time | 2026-10-03T22:49:28.928Z |
| Last seen | 2026-10-03T22:49:28.928Z |
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Back to Articles The Agent Said It Was Done. The Database Disagreed. Enterprise Article Published October 3, 2026 Upvote - Tuhin Kundu tuhink Follow microsoft A tool call is not an outcome One success is not reliability Can you depend on the model behind your agent? What consistency costs Pareto cost frontier Now price consistency Failure signatures How it works Run it yourself Before you start Install Start Typesense Start the MCP servers Start the OpenEnv server Check readiness Score an episode Where this goes next Microsoft ThinkingBox grades AI agents on the records they leave behind, not the sentences they generate, and then asks whether they can do it twenty times in a row. It is now available through Hugging Face.
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