Pay once · No Friday subscription
Find the aged-inventory charge rows whose supplied math does not add up.
Included in the $9.00 Shelf Kit
FBA sellers, agencies, and finance teams checking a seller-supplied Long Term Storage Fee Charges export before a human reviews source measurements, rates, or charge handling.
Delivery: usually a structured result, workbook, or ZIP depending on the tool.
Friday performs arithmetic only on the snapshot date, SKU references, condition, per-unit volume, volume unit, country, currency, charged quantity, supplied age tier, surcharge rate, and amount charged you provide. It reads no Amazon account, report, fee schedule, inventory record, or measurement and verifies no field. A discrepancy is between your supplied fields for human review—not a finding that a charge is wrong or that a credit, reimbursement, waiver, or dispute is available. Friday opens no case, files no dispute, changes no inventory, shipment, listing, or price, does not publish listings, and does not modify a seller account.
Synthetic sample
{
"row_count": 4,
"total_quantity_charged": 840,
"total_reported_amount_charged": 244.0,
"total_recomputed_amount_charged": 243.0,
"total_amount_discrepancy": 1.0,
"possible_overcharge_exposure": 5.0,
"mismatch_count": 2,
"high_exposure_count": 3,
"review_queue_preview": [
{
"priority_rank": 1,
"reference": "AGED-181-BOTTLE",
"sku": "NW-BOTTLE-20",
"surcharge_age_tier": "181-210 days",
"reported_amount_charged": 80.0,
"recomputed_amount_charged": 75.0,
"amount_discrepancy": 5.0,
"possible_overcharge_exposure": 5.0,
"status": "review_math"
},
{
"priority_rank": 2,
"reference": "AGED-365-LAMP",
"sku": "NW-LAMP-08",
"surcharge_age_tier": "365+ days",
"reported_amount_charged": 65.0,
"recomputed_amount_charged": 69.0,
"amount_discrepancy": -4.0,
"possible_overcharge_exposure": 0.0,
"status": "review_math"
}
],
"publish_status": "draft_needs_review",
"safety": "Arithmetic on seller-supplied report fields only. A discrepancy is not a finding that Amazon charged incorrectly or that a credit is due; no case is opened and no inventory, listing, shipment, or account is changed."
}
This sample uses synthetic facts. Your output is generated only from the facts you submit.
POST /v1/amazon/fba/aged-inventory-surcharge-charge-verifier
Exact x402 price: $0.50. Use the public OpenAPI schema and Base USDC payment flow. The response returns a private job URL and temporary token.