{
  "headline": "LLM screen matched paper's 8/14 for ChatDev; mini-MAS stage 3 confirmed just 2/14 anticipated failures; 3 of 5 declared-done traces failed hidden tests.",
  "idea": [
    "MASQ turns MAST's after-the-fact failure taxonomy into a design-time screen: five design dimensions (agent configuration, network topology, communication, task dynamics, memory) are mapped to 14 MAST failure modes, letting teams anticipate which risks are baked in before any system runs.",
    "The fixed dimension-to-mode mapping and the guardrail/prompt-only/architectural classification rule (paper §3) automatically translate design choices into Low/Mid/High risk ratings—explicit hard mechanisms earn Low, prompt-based constraints earn Mid, and risks inherent to the architecture earn High.",
    "Stage 3 confronts those anticipations with real execution traces: mismatches where a mode was predicted Low but appeared often, or rated High but never manifested, are the actionable output—pointing to either overconfident guardrails or unnecessary alarm."
  ],
  "findings": [
    "For ChatDev (the paper's reference system), the LLM screen agreed with the authors on exactly 9/14 modes and scored 8/14 correctly anticipated against the paper's 30 annotated traces—matching the authors' own result. FM-3.2 (no or incomplete verification) was again rated Low, replicating the paper's headline miss: 11/30 traces exhibited it but the design's tester role-prompt fooled both the authors and this LLM screen into predicting Low likelihood.",
    "Divergences from the authors reveal where the LLM's reasoning differs: the LLM rated FM-1.3 (step repetition) Low—confident the hard 2-round cap prevents it—while authors rated it Mid and 7/30 traces showed it; conversely, the LLM rated FM-2.4 (information withholding) High and FM-1.4 (loss of history) Low, while authors rated both opposite directions. FM-1.4's Low was ultimately correct against the paper traces (2/30, matching the Low ≤ 2/30 threshold), so the LLM outperformed the authors on that mode.",
    "For the mini chat chain (Stage 3, 5 traces), only 2/14 anticipated failures matched observed behavior—the screen heavily over-estimated risks, rating FM-2.2 (fail to ask for clarification), FM-2.4 (information withholding), FM-1.4, and FM-2.1 as High when none appeared in any trace. FM-3.2 (no/incomplete verification) was rated Low yet appeared in 2/5 traces, and FM-3.1 (premature termination) appeared in 1/5 despite a Low rating—both flipped by the small trace set.",
    "3 of 5 mini-MAS traces were declared done by the agents (reviewer approved all 5; tester passed 1) while hidden unit tests still caught failures; the overall hidden-test pass rate was 88% (22/25). Every partial failure was declared verified through prompt-only review alone, directly confirming the paper's finding: 'role-prompting does not substitute for formal, mechanical verification.'"
  ],
  "try_next": [
    {
      "label": "Mechanical test execution (mas_verification=tests)",
      "why": "Switching to executed assert statements should close the declared-done-but-hidden-fail gap and plausibly lower FM-3.2's anticipated risk to Low—testing whether the screen now correctly predicts that verification failure.",
      "params": {"mas_verification": "tests", "mas_memory": "drop", "n_traces": 5}
    },
    {
      "label": "Shared history across phases (mas_memory=shared)",
      "why": "The current drop setting drove High ratings for FM-1.4 and FM-2.1 (memory modes); shared history should rate those Low and may reduce FM-2.4 (information withholding), revealing whether the memory dimension drives the mismatch surplus.",
      "params": {"mas_memory": "shared", "mas_verification": "prompt", "n_traces": 5}
    },
    {
      "label": "Group-chat topology instead of chat chain",
      "why": "The groupchat preset has a shared ever-growing transcript and a manager agent—a different network topology and memory architecture—likely shifting High risks away from FM-1.4/FM-2.1 and toward FM-1.3 (step repetition) and FM-3.1 (premature termination).",
      "params": {"system_preset": "groupchat", "run_stage3": false}
    }
  ],
  "caveats": [
    "Stage-2 risk ratings are an LLM's judgement applied to the paper's rule, not the authors' hand-labelled Table 2 entries; small models can be inconsistent when phrasing changes slightly.",
    "The mini chat chain is a ChatDev-shaped toy written for this runbook, not ChatDev itself; MAST annotations are produced by the same small LLM model driving the agents, which may introduce correlated annotation errors.",
    "With only 5 traces the observed rates are very coarse against a matching rule calibrated on 30 traces—a single additional trace showing a failure mode can flip a mismatch verdict, making the 2/14 score sensitive to noise.",
    "The dimension boundaries, the exact mode-to-dimension mapping, and the match thresholds (Low ≤ 2/30, Mid 2–8/30, High ≥ 8/30) are reconstructed from Table 2 rather than stated explicitly in the paper; any ambiguity in the reconstruction propagates to all anticipated-vs-observed results."
  ]
}