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extentos

extentos

getMigrationGuide

Map each Meta DAT symbol to its Extentos replacement, with what changes and a step-by-step cutover plan for full migration.

Instructions

The entry point for a developer who ALREADY built their app against raw Meta DAT (the Device Access Toolkit / Wearables SDK) and wants to move onto the Extentos SDK. Extentos's production transport calls the SAME DAT underneath, so migration is a call-site swap, not a rewrite. Returns a map KEYED BY THE DAT SYMBOL you already have (Wearables.createSession, photoDataPublisher, addStream, Display, raw CaptureError, …) → the Extentos primitive that replaces it (glasses.connection, glasses.camera.capturePhoto, glasses.camera.videoFrames, glasses.display.show, ExtentosResult, …), plus a one-line 'what changes' per area and an ordered cutover plan. It re-embeds NO code — each mapping names the Extentos feature, so you drill into getCapabilityGuide(feature) for the Kotlin/Swift idiom and getCodeExample(pattern) for a full composition. The plan orchestrates the tools that already exist: generateConnectionModule (replaces Wearables.initialize/configure + your registration UI) → getPermissions (replaces hand-mapped manifest/plist + Meta scopes) → per-call-site swaps → validateIntegration → createSimulatorSession. Scope: FULL CUTOVER, not coexistence — running raw DAT and Extentos side-by-side in one process is not supported today (the DeviceSession is a single-owner handle), and the response says so. USE when a project already imports com.meta.wearable.dat.* (Android) / MWDATCore/MWDATCamera (iOS) and you're adopting Extentos. DON'T USE for a greenfield project with no existing DAT code (start at getPlatformInfo → generateConnectionModule).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
fromNoWhich SDK the app is migrating FROM. Optional — defaults to `meta_dat` (the only wrapper we map from today; the enum is forward-compatible for other vendors/wrappers as they land).
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Discloses that migration is a call-site swap, not a rewrite; returns a map keyed by DAT symbol; re-embeds no code; provides an ordered cutover plan orchestrating other tools; clearly states that coexistence is not supported. No annotations exist, so the description carries full burden and meets it thoroughly.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is long but every sentence adds value; it is front-loaded with purpose and structured with clear sections. Slightly verbose but justified by the complexity of the tool.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Despite no output schema or annotations, the description fully covers the return value structure, the migration plan, links to other tools, and scope limitations. It is complete for a complex tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% (single parameter with enum and description). The description adds value by explaining the default behavior (defaults to meta_dat) and forward-compatibility of the enum, going beyond the schema's documentation.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states it is the entry point for developers migrating from Meta DAT to Extentos SDK, specifying the output (mapping from DAT symbol to Extentos primitive) and scope (full cutover, not coexistence). It distinguishes from sibling tools like getCapabilityGuide and getCodeExample by positioning itself as the starting point.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly states when to use (project with existing DAT imports) and when not to use (greenfield project with no DAT code), and provides an alternative starting point (getPlatformInfo → generateConnectionModule) for the latter case.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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