Peter Inc · Ops Monitor [live]

Free ops tools

Free, no-signup tools for DTC and ecommerce operators. Everything runs in your browser — nothing is sent anywhere.

Ops Reliability Scorecard

60-second grade of your store's ops reliability — sync, inventory, fulfillment, payouts.

Ops Failure Cost Calculator

Estimate the monthly dollars at risk from silent ops failures, from your own numbers.

True Cost of a Return Calculator

What a return really costs — shipping, labor, fees, write-offs — per return and per year.

Payout Reconciliation Calculator

Walk gross sales → fees → refunds → chargebacks to explain why a payout is less than sales.

Stripe Connect Split & Take-Rate Calculator

Three-way marketplace split: what the buyer pays, Stripe takes, platform and seller net.

Reorder Point & Safety Stock Calculator

When to reorder a SKU: lead-time demand + safety stock for your target service level.

Chargeback Cost Calculator

The true all-in cost of a dispute — fee, reversed revenue, lost product, shipping, staff — and your chargeback rate.

Free Shipping Threshold Calculator

The minimum order value where free shipping breaks even — and the one that still keeps your target profit.

Inventory Carrying Cost Calculator

The true annual cost of holding stock — capital, storage, insurance, shrinkage, obsolescence — and your carrying-cost rate.

Break-Even ROAS Calculator

The exact ROAS where ads break even, from your real contribution margin — plus the ROAS for the profit you want.

Discount Break-Even Calculator

How many more units a sale must sell to break even — a discount comes off margin, not price, so it costs more than it looks.

Economic Order Quantity (EOQ) Calculator

The order size per PO that minimizes total inventory cost — balances per-order cost against holding cost, and shows what your current order size is costing you.

Landed Cost Calculator

The true per-unit cost of imported goods — supplier price plus freight, duty, insurance, and broker fees — and the real margin you're left with.

Inventory Shrinkage Rate Calculator

Your shrink rate and annual inventory loss from a book-vs-physical-count gap — as a % of sales, a % of inventory, and dollars per year.

Stockout Cost Calculator

The annual revenue and gross profit you lose to out-of-stocks — split into demand you recapture later and demand that walks away for good.

For AI agents: Commerce Validators MCP server

These checks (plus live EU VAT/EORI registry lookups) as MCP tools any agent can call — hosted, free tier, no signup.

Want these checks running on your real store data automatically? Start monitoring — $149/mo or get a one-time $29 audit.