x402-niche-briefs.fly.dev x402 offerings

Monthly 3PL cost for two fee schedules.

Classify SKU by revenue share and demand variability (CV).

Screen product/origin against common AD/CVD order families.

Composite accessibility audit: WCAG 2.2 AA contrast (1.4.3/1.4.11), focus appearance (2.4.11), target size (2.5.8) & keyboard nav, VPAT 2.5 / ACR (Section 508, EN 301 549) procurement readiness, European Accessibility Act (Dir. 2019/882, June 2025) e-commerce scope, ADA Title III statement, remediation SLA & demand-letter risk. Returns score, grade, 4 sub-checks, ranked fixes. Not legal advice.

Flag anomalies in affiliate click-to-conversion metrics.

Compare air vs ocean including inventory carrying cost of transit days.

Validate A+ module image sizes, text length and prohibited claims.

Check trademark status eligibility for Brand Registry.

Deterministic Amazon FBA unit economics calculator. Pass ?price_usd=29.99&cogs_usd=6.50&weight_oz=12&referral_pct=15. Returns size tier, referral fee, estimated FBA fulfillment + storage fee, net pre-ad contribution ($ and %), breakeven ACOS %, breakeven ROAS, and target ACOS for a 15% net margin.

Compute LSR, cancel rate and VTR vs Amazon targets.

Predict FBA hazmat review and required docs.

Estimate FBA capacity headroom and overage fee from IPI and cubic feet.

Break-even ACOS, current ACOS/TACOS and ROAS.

Amazon Seller Central ASIN suppression keyword linter for FDA DSHEA disease claims, EPA FIFRA pesticide triggers, and OTC drug flags. Pass ?category=supplements|topicals|electronics|home_goods (default supplements) & optional ?text=<bullet/title copy>. Returns matched trigger words, suppression cause, compliant structure/function rewrites, and TIC lab docs.

Margin after S&S discount tiers.

Estimate Vine enrollment cost and break-even incremental units.

Check whether digital goods must use In-App Purchase.

ACCC mandatory safety/information standards by category.

Deterministic B2B wholesale keystone & distributor margin stack calculator. Pass ?msrp_usd=40&unit_cogs_usd=7.50&wholesale_discount_pct=50&moq_units=100. Returns wholesale unit price, brand gross profit/margin, MOQ order value, distributor-tier margin (at 25% distributor cut), and MAP policy readiness checklist.

Best Buy Marketplace (Mirakl) category acceptance and commission.

Roll up material, labor and overhead with scrap.

Order variance amplification ratio.

One section of the California Delete Act DROP 45-day cycle ops pack for registered data brokers: ops_checklist, intake_fields, or do_not, plus buyer, trigger and portal metadata. Pass ?section=ops_checklist|intake_fields|do_not. JSON. Full pack: /v1/ca-drop-cycle ($0.05). Ops checklist only; not legal advice. Unknown section returns 404, not charged.

California Prop 65 safe-harbor warning validator & 2025/2026 short-form chemical-naming rules. Pass ?chemical_class=phthalates|lead|bpa|acrylamide|cadmium (default phthalates) & optional ?exposure_route=consumer_product|food|apparel. Returns short-form/long-form templates, NSRL/MADL thresholds, symbol rules, and 60-day-notice defense checklist. Educational reference only; not legal advice.