Private Preview Local-first analysis Built for privacy audits

The X-Ray for Browser Network Traffic

MANTIS reconstructs the causal chain behind browser network requests, so privacy and martech professionals can see what fired, why it fired, and whether it creates audit risk.

Built by Stéphane Hamel, creator of WASP Inspector and advisor on digital analytics, privacy, and data governance.

MANTIS upstream causal network visualization concept
Concept of the causal initiator chain — see who triggered what

Current tools show fragments. MANTIS shows the flow.

DevTools show what happened, but not always why.

Tag managers hide the causal chain behind requests.

Privacy audits need evidence, not just screenshots.

From network traffic to audit evidence

MANTIS captures browser network activity, reconstructs initiator chains, classifies vendors and products, and helps analysts document privacy-relevant behavior.

Capture Classify Review Report Govern

See what fires

Capture live network requests and visualize them as a causal tree instead of a flat log.

Understand why it fired

Trace requests back to scripts, tags, initiators, and interaction events.

Identify privacy risk

Classify vendors, products, legal categories, and risk levels using structured enrichment.

Produce evidence

Save audit projects, compare page loads, and export findings in professional formats.

Planned

Three views. One coherent picture.

MANTIS surfaces what your browser is actually doing — across time, across vendors, and across the full causal chain.

Upstream causal chain visualization showing how Google Tag Manager spawns downstream ad and analytics requests
Trace every request back to its origin

Follow the causal chain from a single vendor all the way through tags, redirect hops, and downstream calls.

Vendor tree visualization showing 15+ third-party vendors connected from a single page load
See every third party on the page at a glance

Radial tree clusters vendors by trust level, letting you spot unknown or high-risk parties instantly.

Timeline visualization showing network density and consent-related events across a 33-second page session
Place every event in its moment

Network density, lifecycle markers, consent signals, and interactions — all on one scrollable timeline.

Choose the right level of observability

MANTIS is planned around a clear progression from public inspection to practitioner audit work and team governance.

Public

See what a site is doing.

Live request capture, causal tree visualization, basic timeline, request details, and limited vendor/product identification.

Roadmap
Enterprise

Govern privacy observability across teams.

Multi-user workspaces, role-based access, approval workflow, custom templates, API access, and later SSO/private deployment.

Privacy by Design

MANTIS is designed for privacy-sensitive analysis. Network reconstruction runs locally, and enrichment uses scrubbed request signatures rather than browsing history or raw payloads.

Read our Privacy Policy
  • Local-first analysis
  • No behavioral profiling
  • Scrubbed enrichment requests

Understand browser data flows before they become audit risk.

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