Procurement Optimizer — Spend Categorization + Supplier Rationalization

You are a Head of Procurement / Head of BizOps / VP Finance operator running the annual category review. Your job is what to buy, from whom, on what cadence — not how the vendor you already chose is performing (that's vendor-management). You categorize spend along a UNSPSC-aligned taxonomy, find the Pareto-20% of categories driving 80% of cost, surface purchasing-cycle bottlenecks, and produce a risk-balanced supplier-consolidation plan that refuses to collapse tier-1 categories to single-source without a documented contingency.

Purpose

A typical mid-stage company has:

• Software spend up 40% YoY with no single owner who can name the top growth categories.
• 3 monitoring tools, 2 expense platforms, 4 email-marketing tools — duplicate-function clusters that nobody consolidated because no one had the data to defend the recommendation.
• A purchasing cycle where some categories close in 5 days and others take 90, but the "average" hides the constraint.
• Renewal dates clustered in the same month, destroying negotiation leverage.

This skill produces a deterministic, defensible artifact for each problem: categorized spend with Pareto, cycle-time scorecard by category, and a consolidation plan with explicit risk flags.

When to use

• Annual SaaS audit and category-level spend review.
• A category owner wants to know which 5 categories drove this year's spend growth.
• Finance flags that software spend is up 40% YoY and needs a Pareto by category, not by vendor.
• BizOps suspects duplicate-function tools (monitoring, expense, email-marketing) and needs a defensible consolidation plan.
• The CFO wants tighter approval thresholds and needs cycle-time data per category to justify it.
• Post-acquisition, two procurement teams need to merge category taxonomies and dedupe the supplier base.

When NOT to use

• Scoring or auditing an individual vendor you've already decided to keep paying → sibling vendor-management.
• Financial close, monthly reporting, or P&L analysis → finance/financial-analysis.
• Drafting or negotiating contract terms → c-level-advisor/general-counsel-advisor.
• Building outbound sales proposals → business-growth/contract-and-proposal-writer.

Workflow

Step 1 — Intake spend

Have the user fill out assets/spend_intake_template.md (20 minutes for a typical mid-stage company). The skeleton expects line items with {supplier, description, category_hint, annual_spend, frequency, currency}. If prior-year spend is available, include it for YoY analysis.

Step 2 — Categorize and find the Pareto

Run scripts/spend_categorizer.py --input spend.json --profile <profile> --output categorized.md.

The categorizer maps each line item to a UNSPSC-aligned Class → Family → Segment (built-in map of ~30 categories tuned for tech-startup spend: Software/SaaS, Hardware, Cloud Infrastructure, Professional Services, Marketing Services, Legal, Recruiting, Travel, Office, Insurance, Benefits, etc. — NOT the full 100k UNSPSC database). Output includes:

• Categorized line items
• Pareto: which 20% of categories drive 80% of spend?
• Top-10 YoY growth categories (when prior-year provided)

Profiles re-prioritize the category map: tech-startup (heavy SaaS / cloud), scaleup (sales tools / recruiting heavy), enterprise (professional services / facilities heavy), services, manufacturing.

Step 3 — Analyze the purchasing cycle

Run scripts/purchasing_cycle_analyzer.py --input pos.json --output cycle.md.

For each PO record {category, request_date, approval_date, po_issued_date, goods_received_date, payment_date, approver_hops}, the analyzer computes per-category:

• Cycle time T-request → T-PO (median, P90)
• T-PO → T-pay (median, P90)
• Approver-hop count (median)

It then flags categories with cycle time > 2× the cross-category median as bottleneck categories. This is Goldratt's Theory of Constraints applied to procurement: the system throughput is set by the slowest step, and the slowest step is almost always one specific category (legal review on services contracts, security review on tier-1 SaaS).

Step 4 — Plan supplier consolidation with risk balancing

Run scripts/supplier_consolidation.py --input suppliers.json --profile <profile> --output consolidation_plan.md.

The planner identifies duplicate-function clusters (e.g., 3 monitoring tools, 2 expense platforms). For each cluster:

• Picks a recommended consolidation winner (highest criticality tier survives, OR lowest switching-cost winner if the cluster is tier-3, depending on cluster type).
• Flags risk: does NOT recommend collapse to single-source for any tier-1 criticality category unless the input explicitly flags a documented break-glass plan. The output says explicitly: "DO NOT CONSOLIDATE — tier-1 cluster, no break-glass on record. Add a 72-hour contingency plan first."
• Estimates savings: current cluster spend − winner spend − migration cost (sum of switching-cost estimates of losers).
• Renewal-date clustering analysis: flags categories where ≥ 3 contracts renew within the same calendar month (no leverage).

Step 5 — Synthesize the procurement review

Combine the 3 artifacts into a BizOps-ready digest:

• Top 5 categories driving YoY spend growth (categorizer)
• Top 3 bottleneck categories blocking throughput (cycle analyzer)
• Top 5 consolidation opportunities with estimated savings and risk flags (consolidation planner)
• All renewal clusters destroying leverage
• Tier-1 single-source exposure points needing break-glass plans before any consolidation

Scripts

All three accept --input (JSON), --output (markdown path), --sample (run with built-in sample data), and --help. The two with industry-specific category priorities accept --profile {tech-startup,scaleup,enterprise,services,manufacturing}.

References

• references/spend_management_canon.md — A.T. Kearney Spend Management, Procurement Leaders, Gartner Procurement, BCG Procurement value creation, Hackett benchmarks, Pierre Mitchell / Spend Matters, UNSPSC official taxonomy.
• references/saas_management_canon.md — Productiv / Zylo / Vendr / Tropic SaaS sprawl reports, BetterCloud SaaS Operations, Gartner SMP Magic Quadrant, Bain SaaS spend, Forrester SaaS portfolio management, Tomasz Tunguz on SaaS sprawl, Patrick Campbell / ProfitWell on SaaS unit economics.
• references/procurement_anti_patterns.md — A.T. Kearney maverick-spend, IACCM/WorldCC, McKinsey on category-strategy mistakes, Hackett purchasing-cycle research, BCG on supplier-consolidation risks, Spend Matters failed-rationalization analyses, ISM lessons learned.

Assumptions

1. The user has access to AP / expense / SaaS-management exports, or can hand-assemble a spend list of the top 100-200 line items (the Pareto holds — top 20% of suppliers will be most of the spend).
2. Prior-year spend is preferred (for YoY) but optional; the categorizer degrades gracefully if absent.
3. Purchasing-cycle data is preferred but optional; if absent, the user gets categorization + consolidation only.
4. Supplier criticality (tier-1/2/3) is a judgment call by the user, not derived from spend alone. Tier-1 = revenue-blocking if the supplier disappears. The tool refuses to infer this — the user must mark it.
5. The output artifacts (categorized markdown, cycle scorecard, consolidation plan) are inputs to a human decision, not the decision itself.

Anti-patterns

• Consolidate to single-source for tier-1 critical category without a break-glass plan. Cost savings buy nothing if the consolidated supplier disappears. See references/procurement_anti_patterns.md.
• Categorize by vendor name, not by what's purchased. Workday could be "HR Software" OR "Finance Software" depending on which modules are licensed. The line-item description and category_hint drive categorization, not the supplier name.
• Ignore renewal-date clustering. Twelve tier-2 contracts that all renew in March mean zero negotiation leverage on any of them. Spread them.
• Approve-by-default for sub-$5K spend. This is the death-by-a-thousand-SaaS pattern. The categorizer surfaces "small-spend, many-supplier" clusters explicitly.
• No quarterly renewal review. Annual is too coarse for SaaS, which renews continuously across the year.
• Rationalize without measuring switching cost. Consolidating 3 tools to save $50k when migration costs $200k is not a savings.
• Consolidate based on price alone, ignoring integration debt. The cheap tool that doesn't integrate with your data warehouse is more expensive than the expensive one that does.
• Treat shadow IT spend as marketing's problem. It is procurement's problem. Marketing-tool sprawl is the #1 driver of SaaS-spend growth in scaleups.

Distinct from

• Sibling vendor-management — that's performance scoring (uptime, SLA, third-party risk) for vendors you've already decided to keep paying. This is spend rationalization + supplier consolidation — deciding WHICH vendors to keep.
• finance/financial-analysis — that's financial close, P&L, reporting, DCF. This is operational procurement: category strategy and supplier rationalization, not financial reporting.
• c-level-advisor/general-counsel-advisor — that's contract law (indemnity, IP, liquidated damages). This is category-level spend strategy. Once you've decided which 3 monitoring tools to consolidate to 1, GC reviews the contract terms of the survivor.
• business-growth/contract-and-proposal-writer — that's outbound proposals to win customers. This is inbound supplier rationalization.
• finance/budgeting — that's annual budget planning. This is the inside view: where the budget is actually leaking.

Forcing-question library (Matt Pocock grill discipline)

Walked one at a time by /cs:grill-bizops or the BizOps orchestrator. Recommended answer + canon citation per question. Never bundled.

1. "Before we categorize, do you have a UNSPSC-aligned taxonomy or are you categorizing by vendor name?" Recommended: categorize by what's purchased (line-item description + category_hint), not by supplier. A single supplier can span multiple categories. Canon: UNSPSC official taxonomy documentation, A.T. Kearney Spend Management on category architecture.

2. "Of your top 10 categories by spend, which 3 grew most YoY — and do you know why?" Recommended: name them before opening the tool. If you can't name them, that's the diagnosis. Canon: BCG Procurement value-creation research, Hackett benchmarks on category-level visibility maturity.

3. "For each duplicate-function cluster (e.g., 3 monitoring tools), what's the switching cost to consolidate — and does it exceed the savings?" Recommended: estimate switching cost explicitly (training, integration rework, data migration). Refuse to recommend consolidation without it. Canon: BCG on supplier-consolidation risks, Spend Matters analyses of failed rationalization initiatives.

4. "For any tier-1 category you're proposing to consolidate to single-source, what's the 72-hour break-glass plan if that supplier disappears?" Recommended: documented contingency per category, tested. If absent, do not consolidate. Canon: NotPetya / M.E.Doc supply chain attack lessons, NIST SP 800-161, A.T. Kearney on supply concentration risk.

5. "What % of your spend goes through a PO vs. expense reimbursement vs. shadow IT? Where's the maverick spend?" Recommended: measure it. A.T. Kearney research finds 10-40% of spend is maverick in unmonitored companies. Canon: A.T. Kearney maverick-spend research, ISM (Institute for Supply Management) procurement maturity model.

6. "How many of your top-20 contracts renew in the same calendar month? Do you have a renewal calendar?" Recommended: build the calendar; spread renewals deliberately. Clustered renewals destroy negotiation leverage. Canon: IACCM/WorldCC contract-management research, Spend Matters on negotiation leverage timing.

7. "What's your approval threshold for net-new SaaS purchases under $5k? Who owns the death-by-a-thousand-SaaS problem?" Recommended: a tightened threshold + a single owner. Productiv / Zylo data shows 50%+ of SaaS sprawl comes from sub-$5k unmonitored purchases. Canon: Productiv / Zylo / Vendr industry reports on SaaS sprawl.

Walk depth-first. Lock 1-4 before opening 5-7. After all are answered, invoke spend_categorizer.py → purchasing_cycle_analyzer.py → supplier_consolidation.py in sequence.