WCAG specialist focused on criterion-level evidence across perceivable, operable, understandable, and robust behavior, without overstating automated scan results as conformance.
A perspective available to CARBON—not a claim that this tester has reviewed your project. Findings require execution evidence.
Compatibility specialist focused on browser, device, viewport, operating-system, assistive-technology, and support-matrix evidence, with explicit coverage gaps rather than assumed portability.
A perspective available to CARBON—not a claim that this tester has reviewed your project. Findings require execution evidence.
Performance specialist focused on user-visible latency, Core Web Vitals, payload and request cost, caching, API timing, scalability, mobile constraints, memory, and leaks.
A perspective available to CARBON—not a claim that this tester has reviewed your project. Findings require execution evidence.
Content and UX-writing specialist focused on page identity, clear copy, information architecture, credibility, navigation, status communication, readability, and content quality.
A perspective available to CARBON—not a claim that this tester has reviewed your project. Findings require execution evidence.
Forms specialist focused on input contracts, validation, boundaries, state, submission, recovery, data quality, conversion barriers, and accessible interaction.
A perspective available to CARBON—not a claim that this tester has reviewed your project. Findings require execution evidence.
First-impression and conversion specialist focused on value clarity, trust, navigation, calls to action, responsive composition, dead ends, and page credibility.
A perspective available to CARBON—not a claim that this tester has reviewed your project. Findings require execution evidence.
Checkout and payment specialist focused on order accuracy, address and payment input, trust, retry safety, pricing truth, completion, and conversion-blocking failures.
A perspective available to CARBON—not a claim that this tester has reviewed your project. Findings require execution evidence.
AI
Virtual AI tester
Priya
Shopping Cart Tester
Shopping-cart specialist focused on line-item state, quantities, promotions, totals, inventory changes, persistence, accessibility, and safe transition to checkout.
A perspective available to CARBON—not a claim that this tester has reviewed your project. Findings require execution evidence.
AI
Virtual AI tester
Mateo
Pricing Page Tester
Pricing and subscription specialist focused on plan clarity, comparison, currency and locale, hidden conditions, billing cadence, conversion paths, and truthful claims.
A perspective available to CARBON—not a claim that this tester has reviewed your project. Findings require execution evidence.
AI-generated-code specialist focused on logic, boundaries, null and empty states, failure handling, API use, security, privacy, tests, code smells, state, and misleading AI shortcuts.
A perspective available to CARBON—not a claim that this tester has reviewed your project. Findings require execution evidence.
Follow data across tabs, accounts, reloads, and round trips.
Jason Arbon CEO, testers.ai
/carbon-state
AIMarcusOWASPAISharonSecurityAITariqPerformance
Open two tabs. Change a setting in one. Save an older form in the
other.
Which value wins? Does the user know? Did either tab just overwrite
work it never saw?
/carbon-state focuses on lost, stale, inconsistent, and
invalid application state. It combines source inspection with scoped
browser or API sequences that make those disagreements visible.
Time is part of the input
A search response arriving late can replace newer results. A draft
can survive logout and appear under another account. Exported data can
return through import with different identifiers or relationships.
These are not simply unusual field values. They are interactions
between events, actors, storage layers, and time.
The agent can inspect the relevant transitions, form a hypothesis,
and execute isolated scenarios with synthetic data. It should read back
the state where possible, not just trust the toast or the currently
displayed component.
Preserve the original
/carbon-state test cross-tab settings changes, save/reload, and export/reimport on an isolated copy; preserve all original data
Malformed-storage and corruption checks need disposable fixtures. Two
browser tabs sharing one session are not automatically independent
users; the setup must match the claim.
The report should show the starting state, sequence, expected
invariant, and observed divergence. Timing-sensitive failures need
reproduction conditions, not a vague statement that something
flickered.
AI can help reason across those moving parts while the implementation
is in context. The question is whether the application keeps a coherent
account of the user's work when events stop arriving in the convenient
order.
Install CARBON at testers.ai/carbon for a supported
coding agent such as Claude, Codex, or Cursor.
