$npx -y skills add vaquarkhan/data-engineering-agent-skills --skill data-reconciliation-and-financial-controlsGuides agents through reconciliation and control design for business-critical data. Use when validating financial, operational, or audit-sensitive metrics with source-to-target totals, control balances, exception tracking, or close-process dependencies.
| 1 | # Data Reconciliation And Financial Controls |
| 2 | |
| 3 | ## Overview |
| 4 | |
| 5 | Use this skill when correctness must be proven with control evidence, not only tests. It helps agents design reconciliations, control totals, exception workflows, and audit-friendly validation for high-trust datasets. |
| 6 | |
| 7 | ## When to Use |
| 8 | |
| 9 | - finance, billing, or revenue pipelines |
| 10 | - audit-sensitive operational datasets |
| 11 | - month-end or close-process data products |
| 12 | - source-to-target control validations |
| 13 | - exception-based review flows |
| 14 | |
| 15 | Do not rely on a few spot queries when the business requires reconciled numbers. |
| 16 | |
| 17 | ## Workflow |
| 18 | |
| 19 | 1. Define the control objective. |
| 20 | Clarify: |
| 21 | - what must reconcile |
| 22 | - acceptable variance |
| 23 | - reconciliation frequency |
| 24 | - owner of exceptions |
| 25 | |
| 26 | 2. Choose the reconciliation pattern. |
| 27 | Common patterns: |
| 28 | - row-count reconciliation |
| 29 | - control totals |
| 30 | - aggregate balance checks |
| 31 | - record-level exception matching |
| 32 | |
| 33 | 3. Make timing and cutoff rules explicit. |
| 34 | Reconciliation often depends on accounting windows or source close timing. |
| 35 | |
| 36 | 4. Capture and route exceptions. |
| 37 | |
| 38 | 5. Preserve evidence. |
| 39 | Control systems need reviewable records, not only ephemeral job output. |
| 40 | |
| 41 | ## Common Rationalizations |
| 42 | |
| 43 | | Rationalization | Reality | |
| 44 | | --- | --- | |
| 45 | | "The transformation logic is simple enough to trust." | Critical numbers still need independent validation evidence. | |
| 46 | | "A small variance is probably fine." | Acceptable variance must be defined, not guessed after a miss. | |
| 47 | | "The warehouse total matches once, so we are done." | Control reliability requires repeatable evidence over time. | |
| 48 | |
| 49 | ## Red Flags |
| 50 | |
| 51 | - no explicit acceptable variance exists |
| 52 | - cutoff timing is undocumented |
| 53 | - exceptions are noticed manually and inconsistently |
| 54 | - control evidence cannot be reproduced later |
| 55 | |
| 56 | ## Verification |
| 57 | |
| 58 | - [ ] Control objectives and acceptable variance are defined |
| 59 | - [ ] Reconciliation logic is explicit and reviewable |
| 60 | - [ ] Exceptions have an owner and workflow |
| 61 | - [ ] Control evidence is retained for audit or review |