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Pay once · No Friday subscription

Marketplace Promotion Profit Guard

See what a coupon or markdown leaves after every supplied fee.

Amazon USWalmart USShopifyeBay US

Included in the $9.00 Shelf Kit

Agent/API — $0.25
Review-first
Every output stays a draft. No credentials
No seller-account login required. Private delivery
Inputs expire after 24 hours. Clear recourse
Digital-service refund policy.

What you receive

  • Discounted sale price and customer savings
  • Contribution per unit and margin percent
  • Net contribution after fixed promotion fees
  • Change versus no promotion at the same unit count
  • Break-even units, thin-margin flags, and method notes

Who it is for

Sellers, agencies, and agents checking coupon or markdown arithmetic before a human activates a promotion.

Delivery: usually a structured result, workbook, or ZIP depending on the tool.

How it stays safe

Friday performs arithmetic only on the promotion economics you supply. It does not read a seller account, fetch current marketplace fees, forecast promoted demand, change a price, activate a coupon, or recommend a promotion. It does not publish listings. Expected units are your scenario input, not a prediction; this is not accounting, tax, or financial advice.

Synthetic sample

See the deliverable structure before buying

{
  "publish_status": "draft_needs_review",
  "baseline_contribution_per_unit": 11.5,
  "scenario": {
    "sale_price": 27.0,
    "discount_amount": 3.0,
    "contribution_per_unit": 8.35,
    "net_contribution": 785.0,
    "contribution_change_vs_no_promo": -365.0,
    "minimum_units_to_cover_fixed_fee": 6,
    "verdict": "positive_contribution"
  },
  "safety": "Arithmetic on seller-supplied fees and expected units only; no fee schedule or demand is fetched, and no coupon or price is activated."
}

This sample uses synthetic facts. Your output is generated only from the facts you submit.

Agent API and x402 details

POST /v1/pricing/promotion-profit-guard

Exact x402 price: $0.25. Use the public OpenAPI schema and Base USDC payment flow. The response returns a private job URL and temporary token.

Open the API documentation →

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