Verify a discount inside the checkout

Why use this

1. A shopper may see a coupon advertised as a saving while checkout applies exclusions, quantity rules or new shipping charges. The product discount alone does not show whether the final payable amount improves.

2. A before-and-after checkout comparison could expose the actual effect of the selected code under the same cart conditions. The shopper could review that evidence without accidentally purchasing, joining a subscription or changing unrelated items.

Why an agent / simpler alternative

Useful judgment

Interpret coupon feedback and distinguish item-level discounts from changes to the full total.

Simpler alternative

Enter the code manually for a simple cart with clear totals.

Unsuitable when

Verification requires unapproved personal data, paid membership or purchase completion.

Proposed inputs

1. Name

   Approved product/cart scope

   Owner

   Shopper

   Minimum scope

   Exact item, quantity and existing cart constraints

   Quality check

   Record the baseline without changing unrelated lines.

2. Name

   Coupon and total evidence

   Owner

   Shopper or retailer

   Minimum scope

   Code conditions and visible subtotal, fees, shipping and tax fields

   Quality check

   Check eligibility and identify values that remain estimated.

Access and setup — proposed or unknown

Proposed minimum

1. Read-only supplied checkout snapshots or a proposed staging plan; no purchase.

Compatibility unknowns

1. Unknown: exact runtime, retailer checkout behavior, coupon validity and location-dependent totals.

External actions requiring approval

1. Entering personal information, accepting memberships, changing unapproved cart contents or buying.

Expected deliverable and review checks

Proposed artifact

Discount-verification table with baseline, applied-code result and unresolved final-total components.

Critical checks

1. The comparison uses the same product and quantity.

2. A code acceptance message is not treated as proof of a lower final payable amount.

Missing output evidence

No new workflow run or output inspection is performed for this editorial layer. The linked implementation evidence retains the original source-specific outcome and artifact limits.

Failure signals and proposed responses

1. Signal

   The coupon lowers item price but removes free shipping.

   Why it matters

   The advertised saving may not reduce the total.

   Proposed response

   Compare the full visible amount and disclose any unresolved charges.

2. Signal

   Applying the offer adds a recurring membership.

   Why it matters

   A discount check could create a new commitment.

   Proposed response

   Reject the unapproved change and pause before acceptance.

Effort and cost — unknown

Setup work

1. Capture a stable cart baseline and coupon conditions.

Ongoing review

1. Check final totals and stop before purchase.

Unknowns

1. Unknown: current coupon eligibility, taxes, shipping and checkout access.

First check — proposed, unexecuted

Status

proposed_unexecuted

Synthetic fixture

Invented checkout snapshots show a product discount offset by shipping and an optional membership prompt.

Acceptance checks

1. The report evaluates net visible change.

2. Membership and purchase remain unaccepted.

Stop conditions

1. Sensitive entry or an unapproved commitment is required.

Limits

1. Editorial discount check; no current saving or completed transaction is established.