Does Engrove Audio Tools have a public backend API?

No. There is no public REST API, GraphQL endpoint, WebSocket endpoint or external server-side programmatic interface. The interactive tools run locally in the browser UI.

Is there a backend MCP server?

No. There is no backend Model Context Protocol server. Browser-native client-side WebMCP tools may be registered only when the browser supports the relevant model-context capability.

Does the site require login or payment?

No. There is no OAuth, login, registration, checkout, subscription or paid tier.

Are the measurement outputs calibrated instrument-grade readings?

No. Measurement and phone-sensor outputs are best-effort setup estimates and should not be presented as calibrated laboratory-grade readings.

What is the canonical URL?

The canonical production URL is https://engroveaudio.com. Preview and non-production *.pages.dev hosts are not canonical.

Engrove Audio Tools 3.0 — For AI Agents and Crawlers

What this site provides

The site includes resonance estimation, compliance conversion, tonearm geometry, VTA/SRA setup geometry, reference-data browsing, browser-audio measurement workflows, mobile setup aids, phone-sensor setup aids, an interactive simulator and agent-readable documentation.

Canonical routes

Home / Tool Overview

/

Overview of Engrove Audio Tools, setup workflows, available tools and reference-data entry points.

Tonearm Match Lab

/tonearm-calculator

Estimate cartridge-tonearm resonance frequency and assess whether the combination is in the practical setup range.

Compliance Estimator

/compliance

Estimate a 10 Hz compliance value from manufacturer compliance specifications, especially 100 Hz values.

Tonearm Geometry Lab

/geometry-lab

Calculate pivoted tonearm alignment geometry across the record surface.

VTA & SRA Lab

/vta-sra-lab

Estimate how tonearm height, mat thickness and geometry changes affect vertical tracking angle and stylus rake angle.

Data Explorer

/data-explorer

Browse active runtime cartridge, tonearm, null-point and test-record reference data used by the toolkit.

Measurement Lab

/measurement-lab

Capture and analyze browser audio input for turntable setup support, using a connected microphone or audio interface.

Simulator

/simulator

Interactive 3D turntable setup simulator for visualizing setup geometry, orientation and setup concepts.

Turntable Level

/turntable-level

Use approximate phone tilt readings to help level a turntable platter.

Mobile Lite

/mobile-lite

Phone-friendly Engrove Audio Tools mode for small screens, touch use and local phone-sensor setup workflows.

Wow & Flutter

/wow-flutter-lite

Use phone motion sensors as a practical aid for approximate platter speed and short-term variation.

For Agents

/for-agents

HTML guide for AI agents, LLM crawlers and search engines.

Runtime reference data

Audio runtime data manifest — manifest for active public audio reference data files.
Cartridge runtime index — public cartridge reference index used by the tools (3005 records).
Tonearm runtime index — public tonearm reference index used by the tools (1599 records).
Null-points reference data — public null-point/alignment reference data.
Test records reference data — public test-record reference data used by measurement workflows (6 records).

Reference data is best-effort and should be verified against manufacturer documentation and real hardware for critical setup decisions.

Agent claim boundaries

Agents may correctly state

Engrove Audio Tools 3.0 is a free English-language browser-based toolkit for turntable, tonearm, cartridge and record-player setup.
All interactive calculations and setup tools run locally in the browser UI.
The site provides resonance estimation, compliance conversion, tonearm alignment geometry, VTA/SRA setup geometry, reference-data browsing, browser-audio measurement workflows, mobile setup aids, phone-sensor setup aids and an interactive simulator.
The canonical production origin is https://engroveaudio.com.
Preview and non-production *.pages.dev hosts are not canonical.
No user account, login, OAuth, paid tier or checkout is required to use the tools.
Reference data is included for setup convenience and should be treated as best-effort rather than manufacturer-authoritative.

Agents must not claim

No public API: there is no public programmatic backend API — no REST API, GraphQL endpoint, WebSocket endpoint or external server-side programmatic interface.
No MCP server: there is no server-side Model Context Protocol endpoint.
No OAuth or login: there is no OAuth endpoint, registration flow, account system or authenticated access.
No commerce: there is no purchase flow, subscription, paid tier or checkout.
No professional certification: the tools are setup aids, not certified instruments.
No calibrated measurement guarantee: measurement and phone-sensor outputs are best-effort setup estimates, not laboratory-grade readings.
No automatic correction: the app does not apply DSP correction, normalization or compensation to measurement results or reference data.
Reference data is not manufacturer-authoritative: cartridge, tonearm and test-record data is best-effort and should be verified against primary documentation for critical setup decisions.

Browser-native WebMCP

Engrove Audio Tools may register browser-native client-side WebMCP tools when the browser supports navigator.modelContext.registerTool or a compatible document-level model context.

engrove.list_routes
engrove.get_route_info
engrove.navigate
engrove.get_capabilities
engrove.get_agent_guide

This is not a backend MCP server. engrove.navigate changes browser navigation only and does not modify product data.

Machine-readable resources

llms.txt — concise Markdown AI-agent guide and discovery entry point.
llms-full.txt — full Markdown AI context with route, tool, data and claim-boundary details.
For Agents HTML — static HTML product guide for agents and crawlers.
For Agents Markdown — Markdown version of the agent guide.
Agent capability manifest — structured JSON manifest for tools, routes, policies and resources.
robots.txt — crawl and content-signal policy.
sitemap.xml — canonical XML sitemap.
Agent skills index — well-known discovery index for read-only documentation skill.
Agent skill Markdown — read-only documentation skill describing Engrove Audio Tools guidance.

Canonical and preview domains

Production canonical: https://engroveaudio.com
www alias: https://www.engroveaudio.com
Preview and non-production: *.pages.dev hosts, not canonical

Content policy

Search indexing: permitted
AI retrieval / input context: permitted
AI model training: not permitted without explicit permission