marketplace-ops-toolkit

Practical tools for operations leaders making decisions at scale.

Thirteen interactive tools, single-file HTML, no install, no signup, MIT licensed. Built by an operator with fifteen years running marketplace operations across nine countries, most recently a $40M P&L as Regional Operations Director at a multi-country ride-hail marketplace. The tools are everything I either kept rewriting at every job or wanted to build but never had the engineering cycles for.

22
Case studies Real operator decisions mapped to the tool that surfaced the answer. Fraud, supply, workforce, customer ops, logistics, last-mile.
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Tool #1
Agent ROI Calculator v2
Decide which manual review queues to scale, which to optimize, and which need root-cause investigation. V2 adds false positive cost (LTV impact of blocking legit orders) and portfolio mode (allocate the next marginal agent across multiple queues).
Live · V2
Tool #2
BIN Monitoring Detection
Detect BIN-level attack patterns before they hit chargeback. Combines volume velocity, new-user clustering, and CBK rate trending into a single dashboard with adjustable thresholds and a 7-day drill-down per BIN. Includes a Python reference implementation.
Live
Tool #3
Marketplace Surge Simulator (PID Control) v2
Surge pricing using PID control. V2 adds polygon-level optimization — a 3×3 city map (Airport, Downtown, Stadium, Residential, Industrial, Suburbs, etc.) showing per-zone surge state with a time scrubber across 24h. Nine independent PIDs (one per zone) vs a single city-level PID, because city-average surge hides geographic disparity.
Live · V2
Tool #4
Chargeback Dispute Investigation Template
Walk through a chargeback like a senior fraud analyst. Interactive decision tree wizard guides you from reason code to action recommendation in 4-6 questions, with the evidence package ready. Plus the 8-section SOP structure any team can adapt.
Live
Tool #5
Workforce Forecast Calculator
How many agents do you actually need? Multi-case-type forecast based on volume × complexity × productivity × shrinkage. Compares 100% in-house vs vendor-split scenarios with cost comparison. Four pre-loaded operational presets.
Live
Tool #6
Logistics Supply Forecaster
Translate a marketplace forecast into required couriers, vehicles, sorters, and dock capacity, with day-over-day backlog cascade, storage occupation tracking, origin mix decomposition, and operational levers (boost capacity, defer origin). Two personas (3PL last-mile + fulfillment warehouse), two granularities (daily + intraday hourly+zone), side-by-side operational + financial output, sensitivity at +/- 15% and +/- 30%.
Live
Tool #7
Queue Operations Command Center
Two questions every ops leader asks at standup, fused into one tool: are we behind on SLA right now (backlog health monitor with hours-to-breach, agents-needed-to-recover, recovery cost) and what should the agent pick next (queue prioritization with risk × age × value scoring, three reprioritize modes, top-5 highlight). Four operator presets for fraud, content moderation, disputes, CS escalations.
Live
Tool #8
Escalation Decision Calculator
Most auto-escalate AI tools skip the taxonomy. They surface alerts but cannot say which deserves a human, which should wait, and which would self-resolve in four more hours. This tool maps exception type, alert age, SLA budget, customer impact, volume, and dollar exposure into a single recommendation: auto-resolve, wait, route to human review, or page on-call. Includes a recommendation-across-alert-age curve, cost-of-escalating vs cost-of-waiting comparison, and a per-tier action checklist. Five operator presets covering stuck shipments, payment failures, partner non-response, quality drift, and fraud-flagged transactions.
Live
Tool #10
Customer Feedback Cost Analyzer
Quantify the dollar leak from preventable customer feedback. The number you bring to the executive conversation when the question is fix-it-now vs absorb-it-forever. Monthly leak, annualized leak, payback period, 12-month NPV, 3-year cumulative savings, Pareto category breakdown, sensitivity at +/- 15% and +/- 30%. Two personas (Operations Manager + CFO / Finance), 5 operator presets for marketplace, fintech, last-mile, DTC, and SaaS onboarding shapes.
Live
Tool #11
90-Day Operating Plan Generator
The structured one-pager every new operations leader needs. Generate the 30-60-90 day plan mapped to JD priorities: executive summary, per-priority deliverables across discover / decide / deploy phases, north star metrics, risk register, asks to the leader. Output as Markdown for direct paste into your follow-up email or executive memo. Five operator presets covering Series A marketplace, scale-up CPG, mature marketplace supply, fintech fraud, and last-mile logistics.
Live
Tool #12
Vendor Performance Scorecard
Rank vendors against a weighted multi-dimensional scorecard (on-time delivery, defect rate, cost variance, lead time, response time). A/B/C tier classification with sensitivity analysis on weights, action recommendations per vendor, and money-on-the-table math. Four operator presets for kit sourcing (overseas manufacturers), 3PL last-mile carriers, BPO offshore support, and balanced multi-vendor portfolios.
Live
Tool #13
Driver / Courier Performance Scorecard
Rank drivers and couriers on weighted multi-dimensional performance with tenure-based bias correction so new drivers aren't unfairly penalized by thin data. Four-tier classification (Top / Reliable / Watch / At-Risk), best-gets-first-call simulation showing which tier absorbs the next 100 orders, turnover risk surfacing, and per-driver action recommendations. Four presets for instant delivery, gig couriers, ride-hail, and 3PL last-mile.
Live

About

I'm Everton Paula. 12+ years building and running operations at hypergrowth marketplaces and consumer fintech across multiple countries. Fraud, marketplace ops, logistics, vendor management, workforce planning at scale. This toolkit codifies recurring patterns I've seen work, sanitized and generalized so any operations leader can adapt them.

Currently based in Tampa, FL, focused on Director / Head roles in operations and fraud operations at consumer fintech and marketplaces.