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Invoice review, non-compliance flagging, rejection communication, billing trend analysis, and conversation preparation for in-house legal ops teams managing outside counsel. Review invoices against billing guidelines; flag block billing, prohibited fees, rate violations, staffing violations, late submission. Produce line-item review report and approval note. Draft rejection letter to outside counsel. Build invoice review checklist. Analyse billing trends across multiple invoices and produce a st
Passed 20 of 22 test cases with the skill, and 3 of 22 without it.
and 22 more in the full report
17 fixed3 passed either way2 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 17 test cases the skill fixed. Same model, same prompt, with and without the skill.
We just received invoice #INV-8821 from Acme Law for $45,000 covering last month's patent litigation work. Please review these billed entries against standard outside counsel guidelines. Generate a line-item breakdown report detailing any flagged entries along with their specific issues and payment recommendations, and provide a formal approval note that our accounts payable team can use to process payment.
| Checked | Without skill | With skill |
|---|---|---|
| The response begins directly with the Line-Item Review Report without prior conversational intro or executive summary text. | Missed | Passed |
| The document header contains '[Company] — Invoice Line-Item Review Report'. | Missed | Passed |
| The response includes an Invoice Approval Note following the review report table. | Passed | Passed |
The instructions your model reads when the skill loads.
Invoice review, non-compliance flagging, rejection communication, and billing compliance tracking for in-house legal ops teams managing outside counsel. Review an invoice against billing guidelines, flag violations by category, and produce a line-item review report with an approval note for the payment team. Draft a formal rejection letter to the firm for flagged entries. Build an invoice review checklist calibrated to your billing guidelines. Identify recurring compliance patterns across invoices and produce a formal non-compliance notice for the firm. Trigger on: 'review this invoice', 'check this against our guidelines', 'flag the billing issues', 'write the rejection letter', 'communicate the reductions', 'build an invoice checklist', 'our review process', 'block billing', 'UTBMS', 'LEDES', 'billing non-compliance', 'recurring violations', 'the firm keeps doing this', 'escalate the billing issue'.
Executes invoice compliance review from line-item flagging through to formal firm communication. Encodes the methodology for reviewing invoices against billing guidelines, categorising violations, producing defensible approval decisions, and escalating systemic non-compliance.
This skill does NOT:
Cross-skill connection: Instruction gaps identified by matter-allocation-instruction (missing UTBMS requirement, no staffing disclosure, no late submission penalty) are the upstream cause of invoice compliance failures caught by this skill. The review checklist in Mode 3 should reflect what the engagement terms in OCM Skill 1 require.
Gather what you have. Fill in what's known. Use placeholders for the rest. Proceed immediately.
Billing guidelines: Search project knowledge and Google Drive for outside counsel guidelines, billing guidelines, or OCGs before running any mode. An organisation has one set of billing guidelines — use those as the compliance reference throughout. If no guidelines are found in project knowledge or Google Drive, apply best-practice defaults and label them as defaults explicitly.
E-billing system: Some organisations use an e-billing platform (Brightflag, SimpleLegal, Legal Tracker, CounselLink); others manage invoice review manually by email and spreadsheet. The skill works for both. Where an e-billing system is in place, LEDES format and UTBMS coding are hard gates. Where there is no e-billing system, invoice submission by email is the channel and UTBMS coding is a best-efforts flag rather than a hard rejection trigger.
| Field | Value |
|---|---|
| Company / Legal department | [Company] |
| Firm name | [Firm] |
| Matter name / number | [Matter] |
| Invoice number | [Invoice #] |
| Invoice period | [Date range] |
| Invoice amount (total) | [Amount + currency] |
| E-billing system | [Platform name] / None — manual review |
| Review type | Single invoice / Systemic pattern / Process setup |
test cases passed, vs 3 / 22 without
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