Definition
Plain language
A benchmark of tool-using tasks, with relatively short task lengths, used to test AI agents.
As stated in the literature
A short-horizon tool-use benchmark over MCP-served tools, used in clarification-timing studies as the setting with the strongest value-of-information signal.
Why it matters: Its short, tool-focused tasks make it a clean setting for studying when an agent benefits most from pausing to ask a clarifying question.
For example, it gives an agent a short task that requires calling a few tools and checks how well it picks and uses them.
Heard on the show
“… On the benchmark with the strongest signal — MCP-Atlas, which is a tool-use benchmark with relatively short trajectories — the oracle baseline, where …”Episode 035 — Why Frontier Agents Ask for Clarification at Exactly the Wrong Moment