Pay once · No Friday subscription
See which incoming buyer offers clear your contribution floor and the smallest counter that does.
Included in the $9.00 Shelf Kit
Facebook Marketplace sellers triaging incoming lowball offers against their own selling fee, shipping, cost, and contribution-floor inputs before a human accepts or counters anything.
Delivery: usually a structured result, workbook, or ZIP depending on the tool.
Friday performs per-sale arithmetic only on seller-supplied listing aliases, current price, incoming buyer offer price, selling-fee percentage and minimum, fee-basis addition, seller-paid shipping cost, other costs, and contribution floor. It reads no Facebook Marketplace account, listing, offer, message, order, payout, or fee schedule; embeds no fee schedule; and verifies no field. Facebook Marketplace alone determines the actual fee basis, terms, and whether an order is covered. A below-floor result is a scenario from your inputs, not a demand, acceptance, conversion, or offer-performance forecast and not a recommendation to accept, decline, or counter any offer or to set a price or shipping choice. Friday sends no offer or counter, accepts or declines nothing, spends nothing, changes no listing, price, shipping, inventory, payout, or seller account, and does not publish listings.
Synthetic sample
{
"row_count": 5,
"offer_non_positive_contribution_count": 2,
"offer_below_floor_count": 1,
"offer_at_or_above_floor_count": 2,
"minimum_selling_fee_applied_count": 1,
"floor_unreachable_count": 0,
"total_current_listing_price": 362.0,
"total_buyer_offer_price": 263.0,
"total_offer_selling_fee": 13.3,
"total_seller_paid_shipping_cost": 54.0,
"total_offer_contribution": 48.7,
"total_minimum_contribution_amount": 52.0,
"total_contribution_floor_shortfall": 17.55,
"total_counter_uplift_needed": 18.31,
"review_queue_preview": [
{
"priority_rank": 1,
"reference": "FBO-LAMP",
"selling_fee_rule": "PERCENT_APPLIED",
"buyer_offer_price": 18.0,
"offer_selling_fee": 0.9,
"offer_contribution": -5.9,
"contribution_floor_shortfall": 10.9,
"floor_preserving_minimum_price": 29.47,
"counter_uplift_needed": 11.47,
"offer_clears_floor": false,
"status": "offer_non_positive_contribution"
},
{
"priority_rank": 2,
"reference": "FBO-MUG",
"selling_fee_rule": "MINIMUM_APPLIED",
"buyer_offer_price": 5.0,
"offer_selling_fee": 0.4,
"offer_contribution": -3.9,
"contribution_floor_shortfall": 4.9,
"floor_preserving_minimum_price": 10.0,
"counter_uplift_needed": 5.0,
"offer_clears_floor": false,
"status": "offer_non_positive_contribution"
},
{
"priority_rank": 3,
"reference": "FBO-COAT",
"selling_fee_rule": "PERCENT_APPLIED",
"buyer_offer_price": 55.0,
"offer_selling_fee": 2.75,
"offer_contribution": 10.25,
"contribution_floor_shortfall": 1.75,
"floor_preserving_minimum_price": 56.84,
"counter_uplift_needed": 1.84,
"offer_clears_floor": false,
"status": "offer_below_floor"
},
{
"priority_rank": 4,
"reference": "FBO-BOOK",
"selling_fee_rule": "PERCENT_APPLIED",
"buyer_offer_price": 15.0,
"offer_contribution": 4.75,
"floor_preserving_minimum_price": 14.21,
"counter_uplift_needed": 0.0,
"offer_clears_floor": true,
"status": "offer_at_or_above_floor"
},
{
"priority_rank": 5,
"reference": "FBO-DESK",
"selling_fee_rule": "PERCENT_APPLIED",
"buyer_offer_price": 170.0,
"offer_contribution": 43.5,
"floor_preserving_minimum_price": 155.79,
"counter_uplift_needed": 0.0,
"offer_clears_floor": true,
"status": "offer_at_or_above_floor"
}
],
"publish_status": "draft_needs_review",
"safety": "Per-sale arithmetic on seller-supplied buyer offers, selling-fee terms, shipping costs, and contribution floors only. It predicts no acceptance, reads no Facebook Marketplace account, sends no offer or counter, changes nothing, and publishes nothing."
}
This sample uses synthetic facts. Your output is generated only from the facts you submit.
POST /v1/facebook-marketplace/offers/buyer-offer-counter-floor-preflight
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.