Glossary

Quick reference for every term that appears across the TrainAR docs.

Core concepts

Account - your team's account on TrainAR. The boundary around your data. See Your account.

Seat - a paid licence for one engineer to run training sessions. Holds up to 3 paired devices. Billed monthly.

Device - a phone, tablet, or pair of AR glasses paired to a seat from the Devices page.

User - a Dashboard login for managing the account. There's no per-user charge - only per-seat.

Session - a single training run in the TrainAR app, on a phone or on glasses. Recorded, summarised, optionally extracted into a procedure.

Procedure - a structured, re-usable training procedure built from a trainer-mode session. Other engineers can load it in trainee mode and be coached through the same job.

Task - a unit of work assigned to an engineer (a job, a service call). Can be created manually or synced from a connected field-service system. Provides context to the AI for a session.

Skill - a tool the AI assistant can call during a session. Some are built-in (search_knowledge, capture_camera), some come from Marketplace bundles (pa_* for Parts & Spares), some you author yourself.

Knowledge - documents (manuals, procedures, specs) uploaded to your account that the AI can search in trainee sessions.

Bundle - a Marketplace package combining skills + knowledge + procedures, subscribable per seat per month. Either platform-built (TrainAR) or curator-built (third party).

Curator - a third party publishing a Marketplace bundle. Could be a manufacturer, trade trainer, or domain expert.

Modes and roles

Trainer mode - engineer is recording a procedure. The AI listens but stays mostly silent. Used to capture senior engineers' know-how.

Trainee mode - engineer is doing a job, with the AI actively coaching, looking at things on request, fetching information. Used for juniors learning, or experienced engineers hitting unfamiliar work.

Admin - full Dashboard access. Admin-only surfaces: Users, Seats, Devices, Billing, Integrations, API & Webhooks. (Dashboard roles today: Admin and Member only.)

Member - non-admin Dashboard user. Sees Dashboard, Tasks, Sessions, Skills & Knowledge, Marketplace, Reports, and their own My Seat. Doesn't see Users/Seats/Billing/Integrations/API admin tabs.

Trainer / Trainee (seat roles, NOT Dashboard roles) - each seat has one or both of these roles. Trainer-mode sessions capture procedures; trainee-mode sessions are AI-coached. A seat can hold both roles simultaneously.

On-glasses concepts

Core App - the application running on the AR glasses. Authenticates against your account, handles voice commands, streams video, hosts the AI participant.

Voice channel - the WebRTC stream between the glasses and the AI in TrainAR's cloud. Carries the engineer's voice and the AI's voice replies.

Server-side VAD - voice activity detection that runs in TrainAR's cloud (not on the glasses). Detects when the engineer's finished speaking so the AI can reply naturally - no hotword needed.

Start / Stop training session - the two voice phrases that open and close a session.

Skills, knowledge, and integrations

System skill - built-in AI capabilities present in every account (search_knowledge, capture_camera, end_session).

Platform skill - skills delivered via a Marketplace bundle (e.g. the five pa_* skills from Parts & Spares).

Account skill - skills you've authored yourself in Dashboard → Skills & Knowledge → Skills.

Knowledge topic - a grouping of related knowledge documents within an account.

Integration - a connection between TrainAR and an external system (FSM, CRM, automation tool). Connected from Dashboard → Integrations (top-level nav, not under Settings).

Writeback - when a completed TrainAR session pushes its outcome back to the source FSM: a completion note (summary, score, duration, session link) and, where the FSM supports it, completed form PDFs. Writeback never changes the job's status.

Marketplace

Marketplace - the in-Dashboard catalogue of bundles available to subscribe to.

Subscription - your account's paid access to a Marketplace bundle. Per seat per month.

Allocation - the seats within your account that have access to a specific bundle. You can subscribe a bundle to fewer seats than your total.

Developer surface

TrainAR REST API - HTTP API for your account data, authenticated with a tak_* API key. See TrainAR REST API.

TrainAR MCP server - Model Context Protocol server exposing the same operations as the REST API, for AI agents. See TrainAR MCP server.

Webhook - an HTTP POST TrainAR sends to a URL you control when an event fires (session ended, procedure extracted, task created, etc.). See Webhooks.

API key - credential for the TrainAR REST API or TrainAR MCP server. Starts tak_. Scoped to specific permissions.

Sessions and processing

Pre-flight - the ~2-second silent check at session start (voice channel up, video stream up, AI joined).

POV recording - the engineer's first-person video captured by the glasses during a session.

Session summary - the AI-generated narrative of what happened in a session ("the engineer serviced a Worcester Greenstar 30CDi, replaced the expansion vessel, tested gas tightness, signed off").

Procedure extraction - the 4-pass video analysis pipeline (Gemini 2.5 Pro) that converts a trainer-mode session into a structured procedure.

Minute pool - your account's allowance of session minutes. Consumed by active session time. Top up from Settings → Billing.

Hardware

INMO Air 3 - supported AR glasses model. Open-ear audio, binocular display, swappable battery.

Vuzix Blade 2 - supported AR glasses model. Monocular display.

Mentra Live - supported Bluetooth AI glasses. Connect to the phone as a hands-free POV camera.

Pairing code - the QR code generated from the Devices page that binds a phone or glasses to a seat. Refreshes every 10 minutes.

Pairing link - a shareable link that does the same job as the QR code without scanning. Lasts days, works more than once, revocable from the dashboard.

Welcome minutes - the 200 free session minutes every new account starts with.

Where to next

• Welcome to TrainAR - the 90-second pitch.
• Your first session - end-to-end walkthrough.
• Browse the topic categories from the home page.