# Extentos MCP Server

[![npm version](https://img.shields.io/npm/v/%40extentos%2Fmcp-server)](https://www.npmjs.com/package/@extentos/mcp-server)
[![license: MIT](https://img.shields.io/badge/license-MIT-blue.svg)](./LICENSE)

**Give your AI coding agent the tools to build smart-glasses apps.**

Extentos is an MCP (Model Context Protocol) server that lets agents like Claude Code, Cursor, and Cline add smart-glasses capabilities — camera capture, voice triggers, live transcription, audio playback — to any Android or iOS app. The tools are deterministic: discovery, scaffolding, validation, and a browser-based simulator for end-to-end testing without hardware.

Works with Meta smart glasses today (Ray-Ban Meta, Oakley Meta, Meta Ray-Ban Display), with a multi-vendor architecture by design.

This repository is the public home of [`@extentos/mcp-server`](https://www.npmjs.com/package/@extentos/mcp-server) — releases, changelog, and issue tracking. The package ships on npm.

## Install

**Claude Code**

```bash
claude mcp add extentos -- npx -y @extentos/mcp-server@latest
```

**Cursor** — one click:

[![Add to Cursor](https://cursor.com/deeplink/mcp-install-dark.svg)](cursor://anysphere.cursor-deeplink/mcp/install?name=extentos&config=eyJjb21tYW5kIjoibnB4IiwiYXJncyI6WyIteSIsIkBleHRlbnRvcy9tY3Atc2VydmVyQGxhdGVzdCJdfQ==)

**Cline / any MCP client**

```json
{
  "mcpServers": {
    "extentos": {
      "command": "npx",
      "args": ["-y", "@extentos/mcp-server@latest"]
    }
  }
}
```

Requires Node 20+.

## What your agent can do with it

| Tool group | What it does |
|---|---|
| **Discovery** | `getPlatformInfo`, `getCapabilityGuide`, `getCodeExample` — the SDK capability catalog, per-feature call shapes in Kotlin + Swift, and canonical end-to-end patterns (voice Q&A, photo-describe, live transcription UI, …) |
| **Scaffolding** | `generateConnectionModule` — generates the connection UI + manifest + platform config for your app (Android or iOS) |
| **Guidance** | `getVoiceCommandGuidance`, `getPermissions` — implementation guidance the agent queries instead of guessing |
| **Validation** | `inspectIntegration`, `validateIntegration` — deterministic checks of the integration in your repo |
| **Simulation** | `createSimulatorSession`, `getEventLog`, `getSimulatorStatus` — a browser simulator running the same SDK code as production with only the transport swapped; the agent drives it and reads the event log to verify behavior |
| **Production** | `getProductionChecklist`, `getCredentialGuide` — the path from simulator to real glasses |
| **Docs** | `searchDocs` — bundled, versioned documentation topics |

The workflow an agent typically runs: discover capabilities → scaffold the connection module → write handler code against the SDK → validate → simulate end-to-end → production checklist.

## Tools

- **getPlatformInfo** — SDK capability catalog, version/artifact info, and platform constraints
- **getCapabilityGuide** — per-feature call shapes in Kotlin + Swift with gotchas
- **getCodeExample** — canonical end-to-end patterns (voice Q&A, photo-describe, live transcription UI, …)
- **getMigrationGuide** — mapping table and cutover plan from Meta DAT direct usage to Extentos
- **generateConnectionModule** — scaffold the connection UI, manifest, and platform config into your app
- **getConnectionPageConfig** — read the managed connection-page configuration
- **setConnectionPageConfig** — update the managed connection-page configuration
- **regenerateConnectionPageFile** — regenerate a managed connection-page file after config changes
- **adoptConnectionPageFile** — bring an existing connection-page file under managed configuration
- **getAssistantConfig** — read the managed voice-assistant configuration (model, voice, memory, wake sound)
- **setAssistantConfig** — update the managed voice-assistant configuration
- **listProjectSounds** — list custom sounds uploaded for the project
- **addProjectSound** — upload a custom sound (earcons, wake sounds) to the project
- **shutter** — trigger a camera shutter in the active simulator session
- **getGatewayUsage** — AI-gateway usage and metering for the project
- **getCredentialStatus** — which credentials (Meta DAT, AI provider) are configured
- **setCredential** — store a credential for the project
- **getProjectAnalytics** — usage analytics for the project's glasses integration
- **getVoiceCommandGuidance** — implementation guidance for voice triggers and wake phrases
- **getPermissions** — the exact permission set the integration needs per platform
- **inspectIntegration** — read the current state of the integration in your repo
- **validateIntegration** — deterministic checks of the integration (manifest, config, wiring)
- **createSimulatorSession** — mint a browser-simulator session for end-to-end testing
- **ensureSimulatorBrowser** — open/attach the simulator browser tab for the session
- **completeAuthLink** — finish the device-code sign-in flow
- **getEventLog** — read the session event log (transport, audio, camera, speak, toggle, stream, system)
- **injectTranscript** — inject a voice transcript into the running app, as if the wearer spoke
- **injectAssistantUtterance** — drive the voice assistant with an utterance end-to-end (real provider session)
- **assertToolCalled** — wait for an assistant tool-call event matching name/args (agent E2E loop)
- **getSimulatorStatus** — live session state: phase, roles, open streams, freshness, test videos
- **setSimVideo** — pipe a test video into the simulated camera
- **setSimDevice** — switch the simulated glasses model
- **getDisplayState** — read the rendered display tree and interactive element ids (Ray-Ban Display)
- **injectInput** — drive display input: select/navigate/back, like Neural Band gestures
- **injectHardwareButton** — simulate the hardware capture button
- **getProductionChecklist** — the path from simulator to real glasses
- **getCredentialGuide** — how to obtain and configure Meta DAT credentials
- **searchDocs** — search the bundled, versioned documentation topics

## How it fits together

- Your app depends on the native SDK: [`com.extentos:glasses`](https://central.sonatype.com/artifact/com.extentos/glasses) (Android, Maven Central) or the Swift package (iOS)
- Your code subscribes to capability primitives from its own handler classes — `glasses.audio.transcriptions()`, `glasses.camera.capturePhoto()`, `glasses.audio.speak()`
- The simulator is the same app on a different substrate: WebSocket transport instead of Bluetooth, so agent-verified behavior carries to hardware

Discovery, validation, and guidance tools work anonymously. Creating browser-simulator sessions and scaffolding require a free account — the server walks the agent (and you) through a device-code sign-in when needed.

## Community integrations

Independent projects that have built with and evaluated Extentos:

- **[EgoFlow](https://github.com/ego-flow/ego-flow-app/tree/extentos)** — an egocentric-video capture platform. Its `extentos` branch drives the glasses connection and live video through the Extentos Android SDK into EgoFlow's existing RTMP transport and backend, and was taken end-to-end on real Ray-Ban Meta glasses.
- **[Voice-triggered capture POC](https://github.com/gggaswint/extentos-poc)** — an independent, MIT-licensed iOS proof of concept. A registered wake phrase triggers `glasses.camera.capturePhoto`, driven headlessly through the browser simulator by the MCP tools; the repo has the implementation and a recording of the run.

## Links

- [Documentation](https://extentos.com/docs)
- [Getting started with an agent](https://extentos.com/docs/getting-started/with-agent)
- [MCP tools reference](https://extentos.com/docs/reference/mcp-tools)
- [The smart-glasses ecosystem reference](https://extentos.com/docs/ecosystem)

## Issues & feedback

Bug reports and feedback are welcome — [open an issue](https://github.com/extentos/mcp-server/issues). The package is pre-1.0; tool surfaces may evolve between minor versions.

For security reports, see [SECURITY.md](./SECURITY.md) — please don't open public issues for vulnerabilities.

## License

[MIT](./LICENSE)