# Engrove Audio Tools 3.0 — For AI Agents and Crawlers

> Free browser-based toolkit for turntable, tonearm, cartridge and record-player setup.
> Canonical URL: [https://engroveaudio.com](https://engroveaudio.com)
> All interactive tools run locally in the browser UI.
> No user account, login, OAuth, commerce flow or stored application data is required.

Human users should start at [https://engroveaudio.com](https://engroveaudio.com).

## What is Engrove Audio Tools 3.0?

Engrove Audio Tools 3.0 is an English-language single-page web application for vinyl playback setup.

It 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.

## Available tools and routes

- [Home / Tool Overview](https://engroveaudio.com/): Overview of Engrove Audio Tools, setup workflows, available tools and reference-data entry points.
- [Tonearm Match Lab](https://engroveaudio.com/tonearm-calculator): Estimate cartridge-tonearm resonance frequency and assess whether the combination is in the practical setup range.
- [Compliance Estimator](https://engroveaudio.com/compliance): Estimate a 10 Hz compliance value from manufacturer compliance specifications, especially 100 Hz values.
- [Tonearm Geometry Lab](https://engroveaudio.com/geometry-lab): Calculate pivoted tonearm alignment geometry across the record surface.
- [VTA & SRA Lab](https://engroveaudio.com/vta-sra-lab): Estimate how tonearm height, mat thickness and geometry changes affect vertical tracking angle and stylus rake angle.
- [Data Explorer](https://engroveaudio.com/data-explorer): Browse active runtime cartridge, tonearm, null-point and test-record reference data used by the toolkit.
- [Measurement Lab](https://engroveaudio.com/measurement-lab): Capture and analyze browser audio input for turntable setup support, using a connected microphone or audio interface.
- [Simulator](https://engroveaudio.com/simulator): Interactive 3D turntable setup simulator for visualizing setup geometry, orientation and setup concepts.
- [Turntable Level](https://engroveaudio.com/turntable-level): Use approximate phone tilt readings to help level a turntable platter.
- [Mobile Lite](https://engroveaudio.com/mobile-lite): Phone-friendly Engrove Audio Tools mode for small screens, touch use and local phone-sensor setup workflows.
- [Wow & Flutter](https://engroveaudio.com/wow-flutter-lite): Use phone motion sensors as a practical aid for approximate platter speed and short-term variation.
- [For Agents](https://engroveaudio.com/for-agents): HTML guide for AI agents, LLM crawlers and search engines.
- [Community Footprint](https://engroveaudio.com/about/community-footprint): Community and development context, enthusiast-forum references and the AI Vibe coding development disclosure. Context only, not certification or endorsement.

## Runtime reference data

- [Audio data summary](https://engroveaudio.com/audio-data-summary.json): source-derived summary of bundled cartridge and tonearm counts. Counts reflect the current bundled data snapshot, not a fixed total.
- [Audio runtime data manifest](https://engroveaudio.com/data/audio/v3/runtime/audio-index.manifest.json): manifest for active public audio reference data files.
- [Cartridge runtime index](https://engroveaudio.com/data/audio/v3/runtime/cartridges.index.json): public cartridge reference index used by the tools (3005 records).
- [Tonearm runtime index](https://engroveaudio.com/data/audio/v3/runtime/tonearms.index.json): public tonearm reference index used by the tools (1599 records).
- [Null-points reference data](https://engroveaudio.com/data/audio/v3/runtime/null-points.json): public null-point/alignment reference data.
- [Test records reference data](https://engroveaudio.com/data/audio/v3/runtime/test-records.json): public test-record reference data used by measurement workflows (6 records).

## What 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.

## What 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 backend 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.

Tools documented for agents:

- `engrove.list_routes`
- `engrove.get_route_info`
- `engrove.navigate`
- `engrove.get_capabilities`
- `engrove.get_agent_guide`

This is not a backend MCP server. It is a browser-side capability. `engrove.navigate` changes browser navigation only and does not modify product data.

## Canonical and preview domains

- Production canonical: [https://engroveaudio.com](https://engroveaudio.com)
- `www` alias: [https://www.engroveaudio.com](https://www.engroveaudio.com)
- Preview / non-production: `*.pages.dev` hosts, not canonical

## Machine-readable resources

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

## Development and community context

Engrove Audio Tools is a non-commercial browser-based hobby and engineering project. It is developed through iterative AI Vibe coding, deep technical analysis, and review across multiple AI providers where useful. AI assistance is a development and analysis aid only; it is not treated as correctness proof, certification or endorsement. Factual claims, data counts and formulas should remain source-bound and human-reviewable. Community and development context, including enthusiast-forum references, is described on the visible [Community Footprint](https://engroveaudio.com/about/community-footprint) page.

## Content policy

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