Evidence that holds up under scrutiny

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Traceability from requirements to results

Connect requirements, test cases, test runs, and test results, so every piece of evidence traces back to the requirement it satisfies.

The world's most advanced testing harness

The engineering underneath: independent, reliable, resilient.

  • Per-task LLM routing

    The best model for each testing job. You don't need to worry about upgrades, prompt rewrites, version pinning, or evals.

  • Reliable tools for your agent

    An MCP for the full testing loop. Broad tool coverage, progressive disclosure, idempotent writes, token-efficient, streaming with keepalive, OAuth.

  • Self-healing off a model, not a selector

    Every element is modeled as dozens of weighted attributes, so a page change re-identifies it by best overall match, falling back to locating it visually when attributes aren't enough.

  • Structural objectivity

    An LLM told to make a test pass will edit the DOM or weaken the assertion to get there. mabl runs your deployed app in a real browser, in a separate context, and checks it against assertions you defined separately.

  • Your intent, translated

    You describe what to test and set your guardrails; mabl's tuned metaprompts turn that into the structured instructions the agent runs on, scoped per agent with mabl's own guardrails winning on conflict. You get an effective agent without prompt-engineering it yourself.

  • Deterministic first, LLM when needed

    Cheap deterministic locators run first; the model engages only when they fail. More efficiency, lower cost, faster.

Rich evidence with structure and clarity

Every test step retains screenshots, DOM snapshots, network logs, and decision rationales, timestamped by infrastructure outside your control, and kept permanently, pass or fail.

Visibility and control over every agentic action

Clear explanations of decisions, actions, and rationales everywhere agents play a role in your quality system.


What every auditor looks for, ready

Gathering evidence yourself

Evidence gathered by mabl

Evidence is biased.

Evidence is objective.

Evidence is shallow, collected at audit time.

Evidence is rich, captured as tests run.

Evidence doesn’t comply.

Records are complete.

AI activity is a black box.

Every agentic action is explained.

Evidence manually connected to test cases.

Direct link between requirement and result.

Evidence continuously captured by independent review

mabl verifies your app separately from the code's author and records every step as it runs, so evidence arrives complete, tamper-resistant, and audit-ready.

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Evidence and traceability that follow you through the testing lifecycle

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Frequently Asked Questions

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What is a requirements traceability matrix?

A requirements traceability matrix maps each requirement to the test cases that verify it and the results of those tests. It shows teams and auditors what’s covered and what isn’t. mabl connects requirements, test cases, runs, and results, so that link holds as tests run.

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How do you create a requirements traceability matrix?

List each requirement, link the test cases that cover it, then record each run’s result and evidence. Spreadsheet matrices drift out of date quickly. mabl keeps a direct link from requirement to result, so traceability is maintained as tests run instead of connected by hand.

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What is independent verification and validation?

Independent verification and validation is testing performed by a party separate from the one that built the software. In agentic development, the author cannot be the verifier. mabl verifies your application separately from the code’s author and records every step as it runs.

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How do you keep an audit trail of AI agent actions?

Record what each agent did, why it did it, and what happened, alongside the test evidence itself. mabl explains the decisions, actions, and rationales wherever agents play a role in your quality system, so reviewers can trace every agentic action.

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What is compliance testing?

Compliance testing verifies that software meets regulatory, security, or internal standards, and documents proof that it does. The documentation matters as much as the result. mabl captures audit-ready evidence as tests run, including screenshots, DOM snapshots, and network logs, kept permanently.