Swisper Sentinel

Glassbox testing, as easy as prompting a chatbot.

Write test scenarios in plain language. Sentinel runs them end to end, across every step your agents take.

You see every step the agent took, and why it took it.

Testing agents is not like testing software.

Agentic systems are non-deterministic. They coordinate across agents, pause for human input, and carry state between steps.

Sentinel makes the whole execution visible, and testable in plain language.

What Sentinel does

Four capabilities. One run. Full visibility from prompt to verdict.

Write it, watch it, explain the failure, judge the quality.

01

WriteE2E Test Automation

Write tests in plain language

  • Plain language, no scripting
  • Runs every step end to end
  • Validation criteria you define
Sentinel · Edit Scenario
02

WatchRun Recording

Watch your agents at work

  • Every run captured as video
  • Replay what the agent saw and did
  • An evidence trail by default
Sentinel · Watch Your Agents at Work
03

ExplainBug Analyzer

Failures explained, not just flagged

  • Automated root cause on every failure
  • Names the agent, state, and decision
  • No manual trace inspection
Sentinel · Test Run Details
04

JudgeLLM as a Judge

Quality, beyond pass or fail

  • Model-based evaluation against your criteria
  • Each check reports verdict and evidence
  • Catches what hard assertions miss
Sentinel · Test Results

Full transparency and auditability.

Every action and every piece of reasoning is logged. When a run fails, you read the trace.

  • Action and reasoning, step by step
  • Logs exportable as JSON or text
  • The same evidence your auditors will ask for
Sentinel · Browser Interactions

The outcome

What changes when the whole run is visible.

Full

Every step covered

Coordination, human-in-the-loop, and state, all tested.

Video

Every run is auditable

See what the agent did, on replay.

Root cause

Failures explained

The agent, state, and decision that broke.

Quality

Regressions caught

Judgement reaches past pass/fail assertions.

This is a QA engineer that watches, judges, and explains.

See Sentinel test a real agent.

We will run a live scenario end to end and show you the trace.