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Friday Seller Tools – Amazon FBA Monthly Storage Fee Verifier
x402
Friday Seller Tools – Amazon FBA Monthly Storage Fee Verifier is a paid API for AI agents from friday-seller-tools-production.up.railway.app, paid per call via x402, $0.5/call, status unknown (last checked 2026-09-14).
Verifies and audits Amazon FBA monthly storage fees for seller inventory to identify overcharges or discrepancies.
Price / call$0.5
Success—
StatusUnknown
How this service works
Instant, low-cost Amazon, Walmart, Shopify, and eBay listing, upload-preparation, advertising, and image-brief deliverables.
Output
Returns a job ID and queued status immediately, with the eventual result containing a detailed verification of Amazon FBA monthly storage fees including fee breakdowns, identified discrepancies, overcharge flags, and per-SKU or per-ASIN storage cost analysis.
Example use cases
Monthly FBA storage fee audit
“I just got my Amazon FBA statement and the storage fees look higher than expected — can you verify whether the charges are accurate and flag any overcharges for my inventory last month?”
Pre-accounting fee reconciliation
“Before I close out this month's books, can you run a verification on my Amazon FBA monthly storage fees so I can reconcile what Amazon charged versus what I actually owe?”
Dispute preparation for Amazon overcharge
“I think Amazon overcharged me on FBA storage fees for my Q4 inventory — can you verify the charges and give me a breakdown I can use to file a dispute?”
Technical details
Endpoint
POSThttps://friday-seller-tools-production.up.railway.app/v1/amazon/fba/monthly-storage-fee-verifierWhen to prefer
Choose this endpoint when you need to audit or verify Amazon FBA monthly storage fees specifically — particularly when reconciling invoices, preparing fee disputes, or checking for overcharges. It is purpose-built for FBA storage cost validation rather than general fee estimation or listing optimization.
Side effects
- Missing or malformed inventory data returns a validation error
- Invalid ASIN/SKU identifiers cause lookup failures
- Job may remain in queued status if processing is delayed
- Insufficient fee data to compare against Amazon's rate card returns incomplete analysis
- Authentication or payment failure returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| rows | array | |
| amount_tolerance | number | |
| volume_tolerance | number | |
| high_cost_threshold | — |
Output
Schema · Response
{
"type": "json",
"example": {
"job_id": "example",
"status": "queued"
}
}Tags
x402
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