Free workflow

Compare checkout totals after shipping and discounts

The same item costs $18 at one checkout and $22 at another. With supplied shipping, discounts and tax, their totals become $25.49 and $22.50. These fictional snapshots demonstrate why the lower item price can lose. Confirm that carts meet the same requirements before comparing them.

Reconcile lower-item-price

Send this supplied snapshot as one separate call. Inspect total, missingComponents and any declared-total mismatch. Missing shipping, tax or fees must stay null; never replace an unknown cost with zero.

commerce.price-components · free

{
  "currency": "USD",
  "minorUnitDigits": 2,
  "items": [
    {
      "id": "identical-item",
      "unitPrice": "18.00",
      "quantity": 1,
      "discount": "0.00"
    }
  ],
  "orderDiscount": "0.00",
  "shipping": "5.99",
  "tax": "1.50",
  "fees": "0.00"
}

Reconcile free-shipping

commerce.price-components · free

{
  "currency": "USD",
  "minorUnitDigits": 2,
  "items": [
    {
      "id": "identical-item",
      "unitPrice": "22.00",
      "quantity": 1,
      "discount": "0.00"
    }
  ],
  "orderDiscount": "1.00",
  "shipping": "0.00",
  "tax": "1.50",
  "fees": "0.00"
}

For these complete supplied snapshots, free-shipping has the lower total at $22.50, versus $25.49. Compare exact minor-unit integers in one currency and retain ties. Any incomplete candidate prevents an overall winner, even when other carts have known totals. A declared-total mismatch needs review. These are supplied-data calculations, not live quotes, tax advice, product-equivalence checks or orders.

These are separate free calls. Map fields explicitly; no automatic merchant changes.

Compare your supplied carts

Python 3.10+. Download the client and recipe into the same folder. No key or payment.

Download comparison SHA-256 · Required client · Sample input

python3 compare_carts.py --execute --input cart_comparison_example.json

Free access, with clear limits

All available hosted tools are free during validation. Existing input, output and source-access limits apply. Full tools and the combined report share capacity limits that count attempts, including failed executions and marked checks; they are not per-user allowances. No account, API key, wallet or funding is needed. Existing credit balances are preserved. Live Reddit remains unavailable until configured. Paid billing will not resume automatically.

Hosted full executions share 1,000 attempts per UTC day and 60 per minute. Local browser audits and comparisons do not consume that hosted allowance. Bounded previews retain their own limits. Results can omit content; inspect source attribution, missing values and truncation. Byte reduction is not measured model-token or dollar savings.

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