MADBench-Full contains 5,200 fully labeled execution traces from five LLMs solving synthetic escape-room tasks. The updated release adds paired tool-enabled and no-tool runs over two clue domains, making it possible to study tool selection, argument construction, tool execution failures, error recovery, and downstream error propagation in a controlled multi-agent system. Four models have 1,200 traces each: 2 clue domains × 2 tool modes × 3 temperatures × 100 rooms. claude-opus-4-8 has 400 traces at temperature 0.0 only. Each room embeds one or more reasoning problems inside escape-room clues: - gsm-hard uses challenging arithmetic word problems. - livecodebench uses chained Python programs.…