Discover
Find listings that satisfy category, location, price, availability and fulfillment constraints.
Marketplaces
Keep marketplace choices trustworthy.
Verify seller, offer, fee and fulfillment facts before an agent reaches a controlled transaction boundary.
For retail, service, B2B, rental and peer-to-peer marketplace teams.
Test the choice between sellers, not only the item.
Marketplace scenarios preserve offer ownership, conditions and trust evidence from discovery through safe review.
Identify
Keep the listing, seller, variant and offer attached to the same source throughout the journey.
Compare
Compare total cost, seller terms, reputation and fulfillment without blending competing offers.
Verify trust
Distinguish platform guarantees, seller claims, reviews and moderation signals.
Reach review
Preserve the selected seller and offer through a reversible cart, enquiry or booking boundary.
Recover
Handle delisted offers, changed fees and unavailable sellers without silent substitution.
Keep one offer intact across a multi-party journey.
Independent assertions verify identity, commercial terms and the selected final state.
Qualified listing
The listing satisfies the requested constraints and resolves to a stable seller and offer.
Trusted comparison
Fees, policies, reviews and fulfillment facts remain attributed to the correct party.
Protected boundary
The intended listing, seller and total reach review unchanged, then the public run stops.
Marketplace errors can produce a valid item from the wrong party.
Seller confusion
The agent carries one seller's reputation or terms into another seller's offer.
Incomplete total
Platform, service or delivery fees appear only after the comparison decision.
Stale availability
A listing remains discoverable after the selected offer is no longer actionable.
Silent substitution
Recovery changes the seller, condition or fulfillment path without explicit confirmation.
Measure confidence in the selected party and offer.
Completion evidence must show who supplies the result, under which terms and at what total cost.
Session recording
Replay discovery, seller comparison, recovery and the final review assertion.
Completion time
Separate search, ranking, listing hydration, fee calculation and recovery waits.
CLS and target movement
Capture shifts around ranking, seller selection, fees and the intended action.
Offer attribution
Assert listing, seller, condition, total and fulfillment at every consequential step.
Public runs stop before payment, enquiry submission or commitment.
Purchases, seller messages, bids, bookings and disputes require approved sandbox fixtures, explicit permissions and independently verifiable outcomes.
The audit inventories marketplace structure and multi-party state.
Established web foundations are evaluated separately from optional agent-native capabilities.
- Product, Offer, AggregateOffer and review structured data
- Seller, listing and canonical identity
- Ranking, filtering and pagination semantics
- Fee, condition, availability and fulfillment state
- Accessibility tree, hydration, CLS and target stability
- OpenAPI, OAuth, MCP or WebMCP when present
Give marketplace teams evidence tied to each party.
- Task by agent result matrix for buyer and provider journeys
- Session recordings, screenshots and final-state assertions
- Seller, listing, fee and policy attribution conflicts
- Recovery findings with reproduction steps and stop gates
- Prioritized backlog with acceptance criteria and retest baseline
Marketplace audit questions
Do public tests contact sellers or place orders?
No. Public runs stop before messages, bids, bookings, payment or another consequential submission.
Can seller and provider portals be tested?
Yes, with approved test accounts, fixtures and scoped permissions in an authenticated or sandbox audit.
Are reviews treated as verified facts?
No. The audit checks attribution and presentation. It does not convert user-generated claims into platform-verified facts.
Practical testing guide
Keep one marketplace offer intact.
Build a repeatable scenario for seller identity, total cost, trust evidence, UGC boundaries, availability recovery and safe transaction gates.
Read the marketplace testing guideTest one marketplace choice from query to safe review.
Apply with a listing discovery, seller comparison or provider journey for a private partner review.