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Strale Marketplace Fee Calculator
x402
Strale Marketplace Fee Calculator is a paid API for AI agents from api.strale.io, paid per call via x402, $0.054/call, status unknown (last checked 2026-09-15).
Calculates the marketplace fee for a given sale price on Amazon, eBay, Etsy, or Shopify, optionally filtered by product category.
Price / call$0.054
Success—
StatusUnknown
How this service works
The trust layer for AI agents — 250+ independently tested data capabilities across 27 countries. Execute capabilities via REST, MCP, A2A, or x402 micropayments. Every call returns an audit record with cryptographic chain hashing.
Output
Returns the calculated marketplace fee for the given sale price on the specified platform, including the fee amount (likely in currency) and potentially the fee rate or percentage. May include a cryptographic audit record per Strale's trust layer.
Example use cases
Amazon electronics fee lookup
“I'm about to list a pair of wireless headphones for $89.99 on Amazon — can you calculate the marketplace fee for electronics so I know my actual take-home?”
eBay fee check before listing
“I want to sell a vintage watch for $250 on eBay. What's the marketplace fee I should expect to pay?”
Etsy handmade goods fee estimate
“I'm pricing a handmade candle at $28 on Etsy. Can you calculate what the marketplace fee will be so I can set the right margin?”
Technical details
Endpoint
GEThttps://api.strale.io/x402/v2/marketplace-fee-calculateWhen to prefer
Use this endpoint when you need a fast, reliable fee calculation for a specific marketplace (Amazon, eBay, Etsy, or Shopify) and optionally by product category. Prefer this over manual fee tables or scraped data when you need an up-to-date, auditable result — especially within agentic workflows that require a cryptographic audit trail. Best suited for pre-listing margin calculations, pricing automation, or real-time fee comparison.
Side effects
- Missing required 'marketplace' or 'sale_price' query parameters returns a 400 error
- Unsupported marketplace value (not amazon/ebay/etsy/shopify) returns validation error
- Negative or zero sale_price may return a validation or computation error
- Payment not provided or insufficient USDC (x402 protocol) results in 402 Payment Required
- Network or service unavailability returns 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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