Luma Payroll Gym
Rules Report
← Heatmap / MiMo V2.6 Pro · Task 83
MiMo V2.6 Pro · Tool use · Task 83 (Traps, missing month) Mean 100.0%
Field Expected Rollout #1 (100%) Rollout #2 (100%) Rollout #3 (100%)
decision clarify clarify clarify clarify
reason code MISSING_PAYROLL_MONTH MISSING_PAYROLL_MONTH MISSING_PAYROLL_MONTH MISSING_PAYROLL_MONTH
clauses R1 R7 R1 R7 R1 R7 R1 R7
Prompt 
Process this monthly payroll record under the supplied rulebook. Return the R6 or R7 JSON answer.
Retrieve the case inputs with list_documents and read_document. Reference rows are available only through lookup_reference. Use calculate for exact decimal arithmetic.
Rollouts
Rollout #1 100.0% passed · 2 tool calls · 29.6s · $0.0004
ComponentScoreClauses
decision 100.0% R1 R7
exact 100.0% R1 R7
field accuracy 100.0% R1 R7
citations 100.0% R1 R7
explanation 100.0% R1 R7
Assistant
list_documents()
Reasoning 
Let me list documents first.
Tool
[
  {"id": "4b62047c2fc0a2f2-payroll", "kind": "payroll"}
]
Assistant
read_document(document_id="4b62047c2fc0a2f2-payroll")
Reasoning 
Read the document and lookup reference rows. I don't know the month yet, so read first.
Tool
{
  "kind": "payroll",
  "record": {"gross_pay": "3229.23", "allowed_deduction": "40.33"}
}
Assistant
{
  "decision": "clarify",
  "reason_code": "MISSING_PAYROLL_MONTH",
  "clauses": ["R1", "R7"],
  "explanation": "The payroll record has no payroll_month, so the reference row cannot be selected. Please supply the payroll month in YYYY-MM format within 2026."
}
Reasoning 
No payroll_month. Also no contract_gross_pay. Missing payroll_month → clarify MISSING_PAYROLL_MONTH citing R1 and R7. But check order: gross_pay is present, so first check passes. Second check: payroll_month missing → MISSING_PAYROLL_MONTH.

Wait, the record has gross_pay but no payroll_month. Per R7 order: 1. Missing gross_pay — not missing. 2. Missing payroll_month — missing (explicit null? It's absent, which includes missing). Return clarify MISSING_PAYROLL_MONTH citing R1 and R7.
Rollout #2 100.0% passed · 3 tool calls · 28.4s · $0.0004
ComponentScoreClauses
decision 100.0% R1 R7
exact 100.0% R1 R7
field accuracy 100.0% R1 R7
citations 100.0% R1 R7
explanation 100.0% R1 R7
Assistant
list_documents()
Reasoning 
Let me start by listing documents.
Tool
[
  {"id": "4b62047c2fc0a2f2-payroll", "kind": "payroll"}
]
Assistant
read_document(document_id="4b62047c2fc0a2f2-payroll")lookup_reference(reference="second-half")
Reasoning 
Read it.
Tool
{
  "kind": "payroll",
  "record": {"gross_pay": "3229.23", "allowed_deduction": "40.33"}
}
Tool
{
  "reference": "second-half",
  "months": ["2026-07", "2026-12"],
  "rate": "0.05",
  "cap": "3500.00",
  "deduction": "400.00",
  "free": "1100.00",
  "upper": "3600.00",
  "middle_rate": "0.08",
  "upper_rate": "0.18"
}
Assistant
{
  "decision": "clarify",
  "reason_code": "MISSING_PAYROLL_MONTH",
  "clauses": ["R1", "R7"],
  "explanation": "The payroll record does not supply payroll_month (a required field), so no reference row can be selected. Please provide the payroll month in YYYY-MM format within 2026."
}
Reasoning 
Payroll month is missing. The record has gross_pay and allowed_deduction but no payroll_month. R7 order: missing gross_pay first, then missing payroll_month. So clarify MISSING_PAYROLL_MONTH citing R1 and R7.
Rollout #3 100.0% passed · 2 tool calls · 25.5s · $0.0004
ComponentScoreClauses
decision 100.0% R1 R7
exact 100.0% R1 R7
field accuracy 100.0% R1 R7
citations 100.0% R1 R7
explanation 100.0% R1 R7
Assistant
list_documents()
Reasoning 
Let me start by listing documents.
Tool
[
  {"id": "4b62047c2fc0a2f2-payroll", "kind": "payroll"}
]
Assistant
read_document(document_id="4b62047c2fc0a2f2-payroll")
Reasoning 
Read it.
Tool
{
  "kind": "payroll",
  "record": {"gross_pay": "3229.23", "allowed_deduction": "40.33"}
}
Assistant
{
  "decision": "clarify",
  "reason_code": "MISSING_PAYROLL_MONTH",
  "clauses": ["R1", "R7"],
  "explanation": "The payroll record has no payroll_month, so the required reference row cannot be selected. Please supply the payroll month in YYYY-MM format within 2026."
}
Reasoning 
No payroll_month. Per R7 order: missing gross_pay first (present), missing payroll_month → clarify MISSING_PAYROLL_MONTH, citing R1 and R7.

But should I look up reference? No, missing payroll_month takes precedence (order 2 before 3).