CircularBuild is a construction-material marketplace for buying and selling new or surplus building materials through buyer and seller accounts, listings, basket, checkout and ordering workflows.
The core commerce workflow is directly supported, so Tier 2 is appropriate. The security/session observation must be remediated or conclusively retested before higher trust classification. Keep Tier 2: end-to-end marketplace workflow verified; material UX/security-quality gaps block Tier 3.
The reviewer exercised the marketplace end to end across buyer/seller surfaces and checkout, and reported several UX/validation issues plus a browser-back/session concern after logout.
The current site exposes active product listings and marketplace purchase surfaces, supporting the reviewer's finding that this is a live marketplace.
Mobile/filter UX problems, duplicate validation, limited payment options and a session/browser-cache concern after logout.
The session issue requires controlled security retesting to distinguish cached-page behaviour from an active authenticated session.
These images formed part of the evidence pack considered during verification. Full-standard records retain the contributor's factual caption for each screenshot.
Earlier-standard evidence image — no contributor caption was stored.
Earlier-standard evidence image — no contributor caption was stored.
Earlier-standard evidence image — no contributor caption was stored.
Earlier-standard evidence image — no contributor caption was stored.
Earlier-standard evidence image — no contributor caption was stored.
Earlier-standard evidence image — no contributor caption was stored.
The verified result is the official public checkpoint record. For earlier-standard reviews, these findings may have been reconstructed from preserved evidence during Sandbox Africa’s 2026 audit; they are not presented as if the contributor originally completed a structured worksheet. Contributor-submitted checkpoint wording is shown only where explicit public reviewer attribution has been enabled.
Checking for dead links, infinite loading screens, or "Coming Soon" landing pages masquerading as live products.
The reviewer exercised the live CircularBuild marketplace across buyer and seller surfaces.
Can a user or enterprise actually sign up, or is it gated behind broken "Contact Sales" forms?
Account/marketplace entry was completed without a blocking access issue.
Does the application actually do what it claims to do? (e.g. a payment gateway completing a test transaction, a logistics app's routing engine working.)
Marketplace browsing and checkout were exercised end to end in the reviewed scope.
Assessing the logical flow, responsiveness, and basic accessibility of the platform.
Mobile/filter UX, duplicate validation and payment-option limitations were observed.
Load speeds, uptime reliability, and basic stress responses.
The marketplace was usable during testing, but no controlled performance or uptime test was completed.
Availability, clarity, and functionality of API documentation and webhooks.
No public API/webhook integration workflow was independently assessed.
SSL certification, basic encryption standards, and data handling transparency.
A browser-back/session concern after logout requires controlled retesting; evidence did not establish an active-session vulnerability.
Claiming verifies company ownership and enables a response or additional evidence. It does not permit editing of the independent review.
