Pay once · No Friday subscription
Recompute per-unit prep and label charges against your own service rates.
Included in the $9.00 Shelf Kit
FBA sellers, agencies, and finance teams reconciling per-unit prep, polybag, bubble-wrap, and label service charges that arrive across many dated transaction lines against their own current service rates before a human reviews the source report.
Delivery: usually a structured result, workbook, or ZIP depending on the tool.
Friday performs arithmetic only on the seller-redacted charge lines and per-unit service rates you provide. It reads no Amazon account, shipment, transaction report, or current FBA prep and label service fee table and verifies no value. The recompute is prepped units × your exact matching service rate; Friday looks up no rate, infers no prep requirement or category prep rule, makes no packaging-safety judgment, and does not model unplanned-service, minimum, or other charges. Grouping lines under a shipment alias is context, not a timing finding. A difference is not proof Amazon billed incorrectly, a credit is due, or a dispute is available. Friday files no case, requests no reimbursement, creates or changes no shipment or prep setting, changes no inventory, fee, listing, or seller account, and does not publish listings. A human must verify the source report and current FBA prep and label service fee guidance before acting.
Synthetic sample
{
"charge_count": 6,
"shipment_count": 3,
"used_rate_count": 3,
"prepped_units": 227,
"total_reported_fee": 141.2,
"total_recomputed_fee": 140.85,
"total_fee_discrepancy": 0.35,
"possible_overcharge_exposure": 0.6,
"possible_undercharge_exposure": 0.25,
"mismatch_count": 2,
"high_charge_count": 1,
"review_queue_preview": [
{
"priority_rank": 1,
"charge_reference": "NW-PREP-002",
"shipment_alias": "SH-NW-15A",
"prep_service_type": "POLYBAGGING",
"reported_fee": 22.6,
"recomputed_fee": 22.0,
"fee_discrepancy": 0.6,
"status": "review_mismatch"
},
{
"priority_rank": 2,
"charge_reference": "NW-PREP-004",
"shipment_alias": "SH-NW-15B",
"prep_service_type": "POLYBAGGING",
"reported_fee": 13.5,
"recomputed_fee": 13.75,
"fee_discrepancy": -0.25,
"status": "review_mismatch"
},
{
"priority_rank": 3,
"charge_reference": "NW-PREP-006",
"shipment_alias": "SH-NW-15C",
"prep_service_type": "BUBBLE_WRAP",
"reported_fee": 64.0,
"recomputed_fee": 64.0,
"fee_discrepancy": 0.0,
"status": "review_high_charge"
}
],
"shipment_summaries_preview": [
{
"shipment_alias": "SH-NW-15A",
"charge_line_count": 3,
"prepped_units": 92,
"prepped_span_days": 14,
"reported_fee": 50.2,
"recomputed_fee": 49.6,
"mismatch_count": 1
},
{
"shipment_alias": "SH-NW-15B",
"charge_line_count": 2,
"prepped_units": 55,
"prepped_span_days": 2,
"reported_fee": 27.0,
"recomputed_fee": 27.25,
"mismatch_count": 1
}
],
"publish_status": "draft_needs_review",
"safety": "Arithmetic on seller-supplied charge lines and service rates only. A difference is not proof Amazon billed incorrectly or that a credit is due; no case is filed and no shipment, prep setting, inventory, fee, listing, or account is changed."
}
This sample uses synthetic facts. Your output is generated only from the facts you submit.
POST /v1/amazon/finance/fba-prep-label-fee-verification
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.