Marketplaces

Onboard sellers in minutes. Trust them sooner.

Q: How fast is the typical seller-onboarding flow?

For low-risk sellers: under 2 minutes from document submission to live-on-marketplace. Mid-risk goes to lightweight review (typical resolution: 4 hours). High-risk to manual investigation (typical resolution: 1-3 business days).

Q: How do we tune the risk thresholds?

Per-tenant configuration through the dashboard. Customers usually start with our defaults (calibrated against typical e-commerce marketplaces) and tune over the first month based on observed fraud rates.

Q: What documents are covered for buyer-side KYC?

US driver's licenses (all 50 states), state IDs, passports (major OECD), utility bills, bank statements. Face-match against an uploaded selfie is available as an additional verification layer.

Q: Does fluex handle international seller onboarding?

Yes — major OECD business registrations are supported (UK Companies House, German Handelsregister, French SIREN). For other jurisdictions we partner with regional specialists; fluex orchestrates the verification.

Q: How does fluex handle 1099-K compliance?

Extracted W-9 / W-8BEN data flows into your 1099-K issuance workflow. We retain a copy with the seller's record so year-end 1099-K generation has clean source data without re-keying.

Seller onboarding requires business registration docs, bank letters, and ID — manual review backlogs delay go-live and create fraud vectors when checks are rushed. fluex automates verification so legitimate sellers are live faster and bad actors are stopped earlier.

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The challenge

Onboarding at marketplace scale is hard.

Onboarding backlogs

At scale, manual document review creates days-long queues. Legitimate sellers go live late; the more you grow, the worse the backlog gets.

Synthetic identity fraud

Fraudsters submit doctored or synthetic documents. Under pressure to clear the review queue quickly, manual reviewers miss mismatched registration numbers or altered details.

Compliance documentation

Regulators require documented evidence of each onboarding decision, especially for marketplace sellers who are effectively acting as merchants of record.

How fluex helps

Automated verification with risk-tiered review.

fluex extracts and cross-checks seller documents automatically — company registration, bank letters, ID — and scores each application for fraud risk. Low-risk sellers go live without human review. High-risk applications get flagged with pre-extracted evidence, not a blank form.

Automated cross-document checks — business registration number extracted from one doc is matched against the company name on another. Mismatches flag immediately.
Risk-tiered routing — high-confidence, clean applications auto-approve with a full evidence trail. Edge cases and fraud flags route to human review with context.
Altered document detection — document forgery scoring catches modified PDFs, pixel-level tampering, and font inconsistencies that human reviewers routinely miss.
Complete audit evidence per application — every document decision logged with extracted fields, confidence scores, and check results — ready for regulatory requests.

Seller onboarding — verification result

entityGreen Trading, LLC

ein✓ 12-3456789

name_match✓ Matches registration

bank_letter✓ JPMorgan Chase, branch 0001

forgery_score0.04 — clean

decisionauto-approved → live

Seller live in 1m 48s

90%

Reduction in manual onboarding reviews

<2min

Clean seller application to live

99.4%

Fraud detection accuracy

100%

Decisions logged — audit-ready

Marketplace onboarding

Onboard sellers in minutes.

Marketplace seller onboarding has two failure modes, and they're opposite. Manual review is slow, rejecting good sellers and damaging fill rate. Automated review is fast but lets fraudulent sellers in, generating chargebacks and platform trust damage. fluex's marketplace configuration solves for both — risk-tiered automation that auto-approves safe sellers in under two minutes and routes high-risk applications to human review with pre-populated context.

Business document verification

EIN / W-9 verification, business registration, articles of incorporation, bank-account ownership letters — extracted and cross-referenced against trusted data sources.

Risk-tiered routing

Configurable rules engine: low-risk sellers auto-approved, mid-risk flagged for light review, high-risk routed to manual SIU-style investigation.

Fingerprint integration

Device-fingerprint and behavioral signals from Fingerprint flow directly into the seller-risk score. Suspicious patterns block onboarding before docs are even reviewed.

Buyer-side KYC, too

Same platform handles buyer verification flows for marketplaces with regulated transactions (firearms, regulated substances, age-restricted goods).

Marketplace integrations

Slots into your seller stack.

Marketplaces run on a heterogeneous mix of internal tooling and third-party services. fluex integrates with the most common marketplace toolchains and ships custom integrations in days when needed.

Marketplace platforms — Native connectors for Mirakl, VTEX Marketplace, Sharetribe Flex, and headless marketplace stacks built on Stripe Connect.
Payments — Stripe Connect, Adyen for Platforms, Tipalti — verified-seller status pushed into the payments platform automatically.
Fraud — Sift, Forter, Ravelin, Fingerprint — bidirectional risk-signal exchange. fluex sends document signals; partners send behavioral signals back.
Tax / 1099 — Track1099, Tax1099 — extracted EIN / W-9 / W-8BEN data feeds into 1099-K issuance workflows.
Communication — Twilio for KYC/KYB SMS verification, Postmark for transactional emails, Intercom for in-app onboarding chat.

FAQ

Common questions.

How fast is the typical seller-onboarding flow?