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.
Human judgment where it can actually change the testing.
Jason Arbon CEO, testers.ai
/carbon-human
AIMiaUsabilityAIJasonAI Code Review
Is this a disposable demo or the workflow your customers will depend
on tomorrow?
The code may not tell you. Neither will another hundred generated
tests.
/carbon-human identifies the smallest set of
project-specific human questions that could materially change the
assessment: intent, risk appetite, workflow fit, domain assumptions,
consequences, and accountability.
Spend human attention
carefully
Do not ask “what does the app do?” when the README already explains
it. Ask whether the implemented workflow solves the customer's actual
problem, whether a surprising behavior is acceptable, or who absorbs the
damage when it fails.
CARBON inspects existing context first. Questions are separated for
Testers, PM or Project Manager, Product Manager, and Developer so the
right people can see the decisions they are best placed to clarify.
The local HTML workspace supports quick choices, free-form answers,
and comments. Questions and answers persist so future runs do not
repeatedly ask for the same context. A changed business situation can
still require revisiting an old answer.
Keep testing while the
question is open
/carbon-human identify the few unresolved decisions that could change readiness for this release; group them by role
Missing optional answers qualify the technical assessment rather than
blocking every useful check. Silence is not approval, and a recorded
opinion is not an executed test result.
The aim is not to turn people into a questionnaire service for the
agent. It is to reserve their attention for the places where intent,
experience, and responsibility make the answer materially better.
Install CARBON at testers.ai/carbon for a supported
coding agent such as Claude, Codex, or Cursor.
