At $15 / 1M tokens, a raw 100k-token DOM costs $0.20 per agent step. Aliax compresses it to a 1,500-token semantic map — $0.0015 — before your VLM is billed. Same page. Same agent. 99.25% cheaper per call.
no credit card · no lock-in · 5-minute install · overdraft hard-capped
// the system prompt ships inside the package, pinned to the SDK release
import { Aliax, SYSTEM_INSTRUCTIONS } from "aliax";
const aliax = new Aliax({ apiKey: process.env.ALIAX_API_KEY });
const ctx = await aliax.parseUi(page);
const decision = await askLLM(ctx); // {action: "CLICK", element_id: "el_41"}
const result = await aliax.execute(page, decision);
// reportIssue is the Gatekeeper — only escalates on proven stagnation
if (!result.ok) await aliax.reportIssue(page, { goal, thoughts, lastAttemptedAction: decision });1:1 parity between Node & Python SDKs. Versioned system prompt ships inside the package.
production-grade reliability for vision-language agents
The Compactor · before / after
Same page. Same agent. $0.20 vs. $0.0015. The diff is your DOM.
<div class="tw-flex tw-flex-col tw-min-h-screen tw-bg-gray-50 dark:tw-bg-gray-900" data-reactroot="">
<div class="tw-fixed tw-inset-x-0 tw-top-0 tw-z-50 tw-bg-white/80 tw-backdrop-blur-md tw-border-b tw-border-gray-200">
<nav class="tw-mx-auto tw-flex tw-max-w-7xl tw-items-center tw-justify-between tw-px-4 tw-py-3" aria-label="Main">
<a href="/" class="tw-flex tw-items-center tw-gap-2 tw-text-base tw-font-semibold tw-tracking-tight">
<svg viewBox="0 0 24 24" class="tw-h-6 tw-w-6 tw-fill-current" aria-hidden="true">
<path d="M12 2L2 7l10 5 10-5-10-5zM2 17l10 5 10-5M2 12l10 5 10-5"/>
</svg>
<span data-testid="brand">Acme Shop</span>
</a>
<ul class="tw-hidden md:tw-flex tw-items-center tw-gap-6 tw-text-sm tw-text-gray-600">
<li><a href="/shop" class="hover:tw-text-gray-900 tw-transition-colors">Shop</a></li>
<li><a href="/cart" class="hover:tw-text-gray-900 tw-transition-colors" data-cart-count="3">Cart (3)</a></li>
<li><a href="/account" class="hover:tw-text-gray-900 tw-transition-colors">Account</a></li>
</ul>
<button type="button" class="tw-inline-flex tw-items-center tw-rounded-md tw-bg-indigo-600 tw-px-3.5 tw-py-2 tw-text-sm tw-font-semibold tw-text-white tw-shadow-sm hover:tw-bg-indigo-500 focus-visible:tw-outline focus-visible:tw-outline-2 focus-visible:tw-outline-offset-2 focus-visible:tw-outline-indigo-600" data-testid="checkout-cta" onclick="trackClick('checkout-cta')">
Checkout
</button>
</nav>
</div>
<script>window.__INITIAL_STATE__ = {"cart":{"items":[...],"total":89.40,"currency":"USD","shippingMethods":[...]},"user":{"id":"u_8421","email":"...numbered Set-of-Mark overlay · drawn natively by the SDK
[
{ "id":"el_1", "role":"link", "label":"Shop", "bounds":[12,38,60,14] },
{ "id":"el_2", "role":"link", "label":"Cart (3)", "bounds":[78,38,40,14] },
{ "id":"el_3", "role":"button", "label":"Checkout", "bounds":[..], "primary":true },
{ "id":"el_4", "role":"input", "label":"Discount code" },
{ "id":"el_5", "role":"button", "label":"Apply" }
]Paste any public URL. A headless Chromium on Cloudflare runs the published Aliax SDK and streams exact token counts vs raw HTML and aria-snapshot baselines. Every number measured server-side — nothing mocked, nothing cached.
recently measured · click any to run live
full benchmarkstripe.com/pricing
91%fewer tokens
38 stable IDs · checkout · TLS handshake page
see full trace
linear.app
87%fewer tokens
24 stable IDs · marketing · SPA hydration
see full trace
notion.so
93%fewer tokens
52 stable IDs · dense dashboard · auth wall
see full trace
See token breakdown, element overlay, and scale calculator on the full benchmark page
The three mathematical pillars
Traditional visual agents click static X,Y coordinates. If an ad loads or the layout shifts a single pixel, they click empty space and the run fails.
Dynamic DNA-stamping: the SDK attaches a temporary, invisible data-aliax-id to every interactable node. Playwright resolves the live element at the millisecond of execution — even after scroll, reflow, or mobile rotation.
Sending a raw 100,000-token HTML DOM to Claude on every step costs up to $0.20 per action and bankrupts your agent loop.
Aliax recursively walks the page, strips Tailwind utilities, tracking scripts, and redundant styling, and condenses it into a clean ~1.5k-token semantic JSON list before the VLM is ever billed.
When a cloud agent crashes at Step 12, developers are blind. They get a generic timeout and have to parse thousands of lines of terminal logs.
reportIssue() packages the exact screenshot, DOM state, the AI's thoughts, and the failure reason into a Sentry-style visual timeline on your dashboard — gated by a stagnation proof so a stuck loop can never burn credits abusively.
npm i aliax · pip install aliax — four primitives around your existing VLM. The code below is the whole loop.
parseUiThe Compactor. 100k-token DOM → 1.5k-token semantic map.SYSTEM_INSTRUCTIONSVersioned browser-control prompt, pinned to SDK release.executeThe Steady Hand. CLS-immune execution via data-aliax-id.reportIssueThe Airbag. Stagnation-proven crash capture.while (!done) {
const ctx = await aliax.parseUi(page);
const step = await vlm.decide({
system: SYSTEM_INSTRUCTIONS,
image: ctx.imageBytes,
map: ctx.llmTextBlock(),
});
const result = await aliax.execute(page, step);
// The Airbag: proves stagnation, then ships the visual crash trace to your dashboard
const issue = await aliax.reportIssue(page, {
goal: step.goal,
thoughts: step.thoughts,
lastAttemptedAction: step.action,
failureReason: step.failure_reason,
});
if (issue.status === "ok") break; // captured — screenshot + DOM + thoughts land in your dashboard with a visual replay
}ExecuteResult = { ok, action, element_id?, coords?, execution_tier: "locator"|"jsclick"|"rebind"|"coords"|"blocked_disabled", error? }
IssueResult = { status: "ok"|"rejected"|"error", msg?, capture_id? }
// stagnation is telemetry, not an exception. Neither call ever raises.Watch parse_ui and execute stream in real-time. Credit balance, success rate, peak load — pay-as-you-go, never a surprise bill.
goal submit checkout order
attempt CLICK el_41 (intercepted)
hash[n-2] 6f3a1c
hash[n-1] 6f3a1c
hash[n] 6f3a1c
3× identical → stagnation
› charged 200 credits
› queued · annotator assigned
› jsonl export ready in ~ 8h
Interoperable infrastructure
Standalone: 3 API calls, own the loop. · Integrated: ~10 lines in your framework's per-step hook. Keep your planner.
aliax.parseUi(page) → aliax.execute(page, step)on_step hook · ~10 lines · no planner rewriteEvery row is a sprint you don't have to run. The self-built column assumes production looks like your local dev environment. It never does.
← scroll to compare →
› This is a lightweight SDK — you keep your Playwright setup and your VLM. Aliax is the production reliability layer between your VLM and a real browser. You stay in control of the agent.
No seats. No platform fee. No minimums. We only earn when your agent runs — and every label the SDK rejects is auto-refunded.
worked example
500 parses + 3 escalations = $0.50 + $0.60 = $1.10 for a complete agent run that ends with three labeled failure rows in your export feed.
RLS by default. PII redacted client-side before upload. Cloudflare + Supabase carry SOC 2 Type II today. Aliax-owned Type I targeted Q4 2026.
Supabase Auth (email + Google OAuth) for accounts. Scoped, revocable API keys for SDKs — stored as SHA-256 hashes, shown once at creation.
Row-Level Security on every table · API keys scoped + revocable · clients cannot self-elevate.
We store account email, hashed keys, ledger entries, capture metadata, and the screenshots your SDK uploads. We do not sell, share, or train on customer data.
redactSelectors:[...] / redact_selectors=[...] — blurred client-side before upload. Retention 30d (enterprise: 24h).
Cloudflare Workers (6 regions) · Supabase Postgres (us-east-1) · R2/S3 blobs with AES-256 at rest · TLS terminated at edge, origin mTLS-locked.
Cloudflare + Supabase/AWS carry SOC 2 Type II and ISO 27001 today — inherited evidence available under NDA. Aliax-owned SOC 2 Type I targeted Q4 2026, Type II + ISO 27001 H2 2027.
compliance roadmap
last reviewed · jun 2026
CC6/CC7/CC8 shadow controls
Access reviews, change-management audit log, vendor list — internal evidence pack on request.
SOC 2 Type I
Auditor selected. Policy pack frozen. 3-month observation window starting Sep 2026.
SOC 2 Type II
12-month operating window. Report delivered to enterprise accounts under NDA.
ISO 27001 + DPA template
ISMS rolled out alongside Type II. Standard DPA + sub-processor list public.
Need the inherited Cloudflare + Supabase evidence pack, internal policies, or a pre-filled CAIQ today? We turn it around within 1 business day under NDA.
Short answers, no marketing fluff. If something is missing, mail support@aliax.xyz and we'll add it here.
Still need details? support@aliax.xyz · enterprise + procurement enterprise@aliax.xyz
Every agent step you ship today without Aliax sends a raw 100,000-token DOM to your VLM. At $50K/month, that's ~$45K in recoverable spend. Install is npm i aliax. First 1,000 parses free.
$ npm i aliax·$ pip install aliax