Install
One command
npm install -g @vitronai/alethia The runtime auto-downloads on first use. Signed and verified. No signup.
vitron.ai
Safe by default Local-first Patent Pending
Alethia is the E2E test runtime built for AI agents. Tell your agent "click Sign In and verify the dashboard loads" — it compiles the plain English to deterministic browser actions and runs them in a real browser on your machine. Every step is checked by the built-in safety gate and logged in a signed audit trail. No test scripts. No browser drivers. No data leaves your infrastructure.
Install
npm install -g @vitronai/alethia The runtime auto-downloads on first use. Signed and verified. No signup.
Configure your agent
{
"mcpServers": {
"alethia": {
"command": "alethia-mcp"
}
}
}
That's it. Restart Claude Code. The cockpit opens automatically with live step highlights.
Set ALETHIA_HIGHLIGHTS=0 in your MCP env for headless / CI mode.
Run it
Test my app at http://localhost:3000 — navigate to it, assert the main heading is visible, and take a screenshot.
The cockpit opens live so you can watch each step. EA1 blocks any destructive action automatically. Try alethia_serve_demo for a built-in demo app.
See it run
The cockpit shows the agent driving in plain English with EA1 gating each step. Every session is scrubbable and signed, so a human reviewer can replay exactly what happened.
What matters
Your agent verifies as fast as it can think. Zero-IPC means no CDP round-trip per action. More iterations per dollar, longer autonomous sessions. Run the benchmark →
Delete, purchase, transfer: blocked unless explicitly allowed. Every step is policy-checked and logged in a tamper-proof audit trail. Learn about EA1 →
No cloud. No telemetry. No data leaves localhost. One signed binary download, then fully offline. Air-gap ready for regulated and defense environments.
Side by side
We built Alethia for agent-driven verification of Chromium-targeting web apps — that's a deliberate scope, not a gap. It goes deep on compliance, safety, and agent performance where general-purpose tools don't. Cross-browser coverage and multi-language bindings are out of scope by design; the table below shows exactly where each tool wins.
| Alethia | Playwright MCP | Cypress | |
|---|---|---|---|
| Performance | |||
| Typical call (ms) | ~40 ms | ~200 ms | — |
| Agent-native MCP interface | ✓ | ✓ | ✗ |
| Zero-IPC in-process execution | ✓ | ✗ | ✗ |
| Compliance & Evidence | |||
| Tamper-proof signed audit pack (Ed25519) | ✓ | ✗ | ✗ |
| Per-step integrity fingerprint (SHA-256) | ✓ | ✗ | ✗ |
| Accessibility audit (WCAG 2.1 AA) | ✓ | ✗ | ✗ |
| Security controls audit (NIST 800-53) | ✓ | ✗ | ✗ |
| Safety | |||
| Fail-closed EA1 safety gate | ✓ | ✗ | ✗ |
| Hard localhost-only allowlist | ✓ | ✗ | ✗ |
| Kill switch (emergency halt) | ✓ | ✗ | ✗ |
| Scope | |||
| Plain-English test authoring | ✓ native | ✗ | ✗ |
| Cross-browser (Firefox, WebKit) | ✗ by design | ✓ | ✓ |
| Mobile browser emulation | ✗ not yet | ✓ | ✓ viewport only |
Every feature row is verifiable against the respective runtime's source or tools. The benchmark numbers come from our reproducibility kit; every dev can re-run it locally and get their own numbers.
Who it's for
Agent tool builders
Embed Alethia in your agent's decide-act-verify loop. Plain English in, structured results out. Compact bundled snapshots instead of per-action accessibility trees that grow with page size.
Enterprise & regulated teams
No data leaves your infrastructure. Cryptographically signed audit trails. U.S. patent, U.S. company, no foreign filings. Built for defense, federal, and regulated environments.
Go deeper
Alethia's architecture is designed from scratch for AI agents, not adapted from human test tooling. Explore the details when you're ready.
Architecture
Zero-IPC execution, agent perception layer, DOM diffs, smart assertions, conditional steps. 10 capabilities that CDP tools can't replicate.
Safety
The first browser automation framework with built-in runtime-enforced ethical guardrails. Destructive actions blocked by default, cryptographically audited.
Access
Developer
Enterprise + partnerships