x402 Listing Quality Teaser
Top 3 x402 resources by heuristic calls-vs-unique-payers pattern score from the CDP Bazaar and PayAI catalogs, with host, resource, unique_payers, calls and wash_risk (a heuristic score, not a finding about any seller). No input. Full scored list: /v1/listing-quality ($0.01).
- Category
- Crypto & DeFi
- Starting price
- $0.01
- Paid calls · 30 days
- 182
- Unique payers · 30 days
- 177
Paid endpoints
148 endpoints, sorted by usage. Prices are per request.
- GET/v1/australia-accc-mandatory-standards-check
ACCC mandatory safety/information standards by category.
$0.01Base1calls / 30d - GET/v1/un383-lithium-battery-test-check
UN 38.3 T1–T8 test applicability and test summary requirement.
$0.01Base1calls / 30d - GET/v1/iata-dgr-battery-shipping-calc
Packing instruction, labels and state-of-charge rules for lithium batteries by air.
$0.01Base1calls / 30d - GET/v1/lacey-act-plant-declaration-check
PPQ 505 declaration need for plant/wood products by HTS phase.
$0.01Base1calls / 30d - GET/v1/upholstered-law-label-state-check
State law label, registration (e.g. PA, OH, MA) and RN check.
$0.01Base1calls / 30d - GET/v1/amazon-ipi-storage-limit-calc
Estimate FBA capacity headroom and overage fee from IPI and cubic feet.
$0.01Base1calls / 30d - GET/v1/amazon-brand-registry-tm-check
Check trademark status eligibility for Brand Registry.
$0.01Base1calls / 30d - GET/v1/amazon-fbm-late-shipment-calc
Compute LSR, cancel rate and VTR vs Amazon targets.
$0.01Base1calls / 30d - GET/v1/walmart-sponsored-search-bid
Max CPC from margin, conversion rate and target ROAS.
$0.01Base1calls / 30d - GET/v1/shopify-checkout-extensibility-audit
Flags checkout.liquid / additional scripts deprecation risks.
$0.01Base1calls / 30d - GET/v1/shopify-markets-duty-tax-check
Check DDP/DAP, HS code and tax registration setup for international markets.
$0.01Base1calls / 30d - GET/v1/ebay-promoted-listings-rate
Break-even ad rate and net per sale for Promoted Listings General.
$0.01Base1calls / 30d - GET/v1/ebay-intl-shipping-eligibility
Check eBay International Shipping (eIS) eligibility.
$0.01Base1calls / 30d - GET/v1/etsy-offsite-ads-fee-impact
Net profit with Offsite Ads 12%/15% fee (capped $100).
$0.01Base1calls / 30d - GET/v1/tiktok-shop-affiliate-stack
Net margin after referral fee, affiliate commission and ads.
$0.01Base1calls / 30d - GET/v1/tiktok-shop-sps-risk
Estimate SPS band from fulfillment and service metrics.
$0.01Base1calls / 30d - GET/v1/bestbuy-marketplace-category
Best Buy Marketplace (Mirakl) category acceptance and commission.
$0.01Base1calls / 30d - GET/v1/wayfair-castlegate-label
Validate CastleGate carton label and dimension rules.
$0.01Base1calls / 30d - GET/v1/faire-net60-cashflow
Payout and financing cost on Faire wholesale orders.
$0.01Base1calls / 30d - GET/v1/retail-media-roas-calc
ROAS, iROAS and CPA for CPG retail-media campaigns.
$0.01Base1calls / 30d - GET/v1/apple-iap-guideline-311-check
Check whether digital goods must use In-App Purchase.
$0.01Base1calls / 30d - GET/v1/google-play-data-safety-validator
Cross-check Data Safety form against SDK data collection.
$0.01Base1calls / 30d - GET/v1/incoterms-2020-cost-split
Who pays/bears risk for each leg under an Incoterm.
$0.01Base1calls / 30d - GET/v1/customs-bond-calc
CBP bond amount and continuous vs single-entry cost comparison.
$0.01Base1calls / 30d - GET/v1/section232-steel-alum-calc
Section 232 duty on steel/aluminum content (50% from June 2025).
$0.01Base1calls / 30d - GET/v1/duty-drawback-estimator
Estimate 99% refund on unused/manufacturing/rejected drawback.
$0.01Base1calls / 30d - GET/v1/ltl-nmfc-density-class
Density-based freight class (2025 NMFC 13-sub-provision scale).
$0.01Base1calls / 30d - GET/v1/dim-divisor-optimizer
Billable weight across carrier divisors and box downsizing savings.
$0.01Base1calls / 30d - GET/v1/reverse-logistics-refurb-vs-liquidate
Compare refurbishment vs liquidation recovery for returns.
$0.01Base1calls / 30d - GET/v1/bopis-margin-calc
Compare BOPIS vs ship-to-home margin incl. add-on purchases.
$0.01Base1calls / 30d - GET/v1/affiliate-cookie-stuffing-detector
Flag anomalies in affiliate click-to-conversion metrics.
$0.01Base1calls / 30d - GET/v1/rbf-payback-simulator
Months to repay RBF cap at revenue-share rate and implied APR.
$0.01Base1calls / 30d - GET/v1/niches
Operational briefs for 11 agent-runnable service niches: buyer role/trigger and first-dollar motion. Conservative ops notes only; no market-size or revenue claims. as_of 2026-08-28.
$0.08Base0calls / 30d - GET/v1/suspension-pack
Platform suspension appeal intake pack: Google Ads, Shopify GMC, TikTok Shop AHR, Etsy. Intake fields, evidence checklists, do-nots. Ops notes only; not legal advice; no reinstatement guarantee. as_of 2026-09-05.
$0.12Base0calls / 30d - GET/v1/compliance-pack
Prop 65 SKU warning / 60-day notice file, FTC click-to-cancel ROSCA + state ARL consent audit, multi-state packaging EPR SKU filing checklist. Ops only; not legal advice or certification.
$0.12Base0calls / 30d - GET/v1/listing-quality
x402 listing-quality / unique-payer vs wash snapshot from PayAI and public catalogs. Helps agents pick non-wash sellers before spending. Cached 15 minutes.
$0.01Base0calls / 30d - GET/v1/suite/fda-food-and-supplement-audit
Composite FDA readiness audit for food & supplement SKUs: 21 CFR 101 nutrition facts, FALCPA/FASTER 9 major allergens incl. sesame, DSHEA 101.93 structure/function vs disease claims + boxed disclaimer, FSMA 204 / MoCRA lot traceability. Returns 0-100 score, A+-F grade, 4 sub-checks and P0-P2 remediation list. Deterministic, no LLM. Not legal advice.
$0.05Base0calls / 30d - GET/v1/suite/cpsc-consumer-product-safety
Composite CPSC audit: 16 CFR 1110 CPC/GCC 7-element eFiling readiness, ASTM F963 / 16 CFR 1501 small-parts choking warnings, CPSIA Sec. 103 permanent tracking labels, and Reese's Law (16 CFR 1263 / UL 4200A) coin-cell battery compartments & warnings. Returns 0-100 score, grade, 4 sub-checks and ranked remediation. Deterministic. Not legal advice.
$0.05Base0calls / 30d - GET/v1/suite/ftc-ecommerce-and-ads-audit
Composite FTC audit: Click-to-Cancel negative-option (16 CFR 425) cancel symmetry & consent, Green Guides (16 CFR 260) environmental claims, Made in USA (16 CFR 323) origin claims, and Consumer Reviews & Testimonials Rule (16 CFR 465) incentive disclosure & suppression. Returns 0-100 score, grade, 4 sub-checks and ranked remediation. Deterministic. Not legal advice.
$0.05Base0calls / 30d - GET/v1/suite/ca-privacy-and-drop-audit
Composite California audit: Delete Act (SB 362) DROP 45-day deletion cycle & hash matching, CCPA/CPRA Global Privacy Control (Sec-GPC: 1) & opt-out links, CPRA data minimization & retention notice, Prop 65 (27 CCR 25601) safe-harbor warnings. Returns 0-100 score, grade, 4 sub-checks and ranked remediation. Deterministic. Not legal advice.
$0.05Base0calls / 30d - GET/v1/suite/eu-ai-and-digital-compliance
Composite EU digital audit: AI Act (Reg. 2024/1689) risk tier (Art. 5 prohibited / Annex III high-risk / GPAI Art. 53 / Art. 50 transparency), GPSR (Reg. 2023/988) Art. 16 EU Responsible Person, DSA Art. 30 trader traceability, GDPR Art. 35 DPIA & Chapter V transfers. Returns 0-100 score, grade, 4 sub-checks, ranked remediation. Not legal advice.
$0.05Base0calls / 30d - GET/v1/suite/osha-and-ehs-workplace-safety
Composite OSHA audit: 29 CFR 1904 Form 300/300A/301 recordkeeping & ITA e-submission, HazCom 2012 (1910.1200) GHS 16-section SDS & secondary labels, Lockout/Tagout (1910.147) & PPE hazard assessment (1910.132), and 1904.39 severe-injury reporting clock (8h fatality / 24h hospitalization, amputation, eye loss). Returns score, grade, 4 sub-checks, ranked fixes. Not legal advice.
$0.05Base0calls / 30d - GET/v1/suite/customs-hts-and-trade-compliance
Composite US import audit: HTS 10-digit classification with Section 301 (Lists 1-4A) & AD/CVD exposure, CBP Section 321 (19 USC 1321) $800 de minimis & Type 86 eligibility, UFLPA entity-list screening & provenance mapping, Incoterms 2020 (DDP/DAP/FOB) valuation & broker POA. Returns 0-100 score, grade, 4 sub-checks and ranked remediation. Deterministic. Not legal advice.
$0.05Base0calls / 30d - GET/v1/suite/cold-chain-and-perishables-logistics
Composite cold-chain audit: GDP / FDA 21 CFR 1.908 sanitary transport excursions with Mean Kinetic Temperature (MKT) & time out of refrigeration, IATA PI 954 dry ice (UN1845) venting & net weight, FEFO shelf-life buffer, FSMA 204 Food Traceability List CTE/KDE lot codes. Returns 0-100 score, grade, 4 sub-checks and ranked remediation. Deterministic. Not legal advice.
$0.05Base0calls / 30d - GET/v1/suite/fcc-and-telecom-messaging-audit
Composite telecom audit: FCC 47 CFR Part 15 RF authorization (SDoC vs FCC ID certification & e-labeling), TCPA (47 CFR 64.1200) 1-to-1 written consent, DNC & 8am-9pm quiet hours, CTIA A2P 10DLC TCR brand/campaign, STOP/HELP & SHAFT, CAN-SPAM / RFC 8058 one-click List-Unsubscribe & postal address. Returns score, grade, 4 sub-checks, ranked fixes. Not legal advice.
$0.05Base0calls / 30d - GET/v1/suite/ada-wcag-and-accessibility-audit
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.
$0.05Base0calls / 30d - GET/v1/suite/hipaa-and-clinical-privacy
Composite health privacy audit: HIPAA Safe Harbor 18-identifier de-identification (45 CFR 164.514(b)), Security Rule ePHI encryption, audit controls & BAA (164.312), HITECH breach notice 60-day window & 500-person HHS/media threshold (164.404-408), FTC Health Breach Notification Rule (16 CFR 318) for apps/wearables. Returns score, grade, 4 sub-checks, ranked fixes. Not legal advice.
$0.05Base0calls / 30d - GET/v1/suite/epa-and-packaging-epr-audit
Composite environmental audit: multi-state packaging EPR (CA SB 54, CO HB 22-1355, OR SB 582, ME, MN) PRO registration & eco-modulated fees, TSCA 6(h) PBTs (PIP 3:1, DecaBDE, PCTP) & FIFRA device EPA est. numbers, state PFAS bans & TSCA 8(a)(7) reporting, CA SB 343 chasing-arrows eligibility. Returns score, grade, 4 sub-checks and ranked fixes. Not legal advice.
$0.05Base0calls / 30d