> For the complete documentation index, see [llms.txt](https://support.limy.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.limy.ai/general/glossary.md).

# Glossary

As AI search engines, LLM-driven interactions, and autonomous agents reshape how users discover information, understanding these terms helps you interpret AI visibility data and measure the impact of AI-driven traffic.

<figure><img src="/files/nZ8t7eDsjg30POx1G8lX" alt=""><figcaption></figcaption></figure>

### Core concepts

* **Prompt**\
  The user’s query to an AI surface (e.g., “best running shoes for knee pain”). Tracking prompts helps you understand what questions users ask AI when researching products in your category.
* **Response**\
  The AI’s response to a prompt, which may contain links to your site. Responses determine how your brand is presented to users within AI-generated answers.
* **Prompt Hash**\
  A stable ID (hash) representing a canonicalized prompt text used for grouping/analytics.
* **Answer ID**\
  A unique identifier for a specific AI answer snapshot.
* **Rank/Position**\
  The placement of your link within the AI answer (e.g., first link shown). Higher placement increases the likelihood that users will click through to your site.

### Acquisition & tracking

* **AI Impression**\
  Recorded when a tracked prompt/answer containing (or likely leading to) your link is shown. Impressions help measure how often your brand appears in AI-generated answers.
* **AI Click**\
  A click from the AI answer to your site (ideally via a decorated/redirected link). AI clicks show when AI responses are actively driving users to your website.
* **Redirector / Link Decorator**\
  A shortlink service that wraps destination URLs to attach IDs/UTMs for deterministic attribution.
* **Destination URL (Dest URL)**\
  The specific page on your site that receives the AI-driven visit. Tracking destination URLs helps identify which pages benefit most from AI-driven traffic.
* **UTM Parameters**\
  Standard marketing tags (e.g., `utm_source=chatgpt`) persisted on arrival for analytics.
* **AI Params**\
  Non-UTM tags used by Limy (e.g., `answer_id`, `prompt_hash`, `link_id`, `ai_model`).
* **Referrer**\
  The page or service that led the user to your site (often the redirector domain).
* **Session**\
  A continuous period of user activity on your site.
* **Sessionization**\
  Logic that groups web events into sessions (server-side preferred).
* **Client ID (CID)**\
  First-party identifier stored in a cookie/local storage and joined to sessions.
* **Server Session ID**\
  A server-generated session key used to stitch events and reduce reliance on client cookies.
* **Event Collector (SDK/Edge)**\
  Limy’s server-side endpoint or edge function that receives web/app events.
* **Limy Pixel**\
  The lightweight snippet/SDK that initializes IDs and forwards events server-side.

### On-site events & commerce

* **Page View**\
  A view of any page; typically the first event after AI Click. Page views confirm that AI-driven users successfully reached your site.
* **Key Event**\
  Milestone interactions (e.g., `view_item`, `add_to_cart`, `begin_checkout`, `lead_submit`). These events help measure how engaged AI-driven visitors are once they arrive on your site.
* **Purchase**\
  Completed order with `order_id`, value, currency, items.
* **Order Value / Revenue**\
  Monetary value attributed to a purchase after discounts but before refunds.
* **Conversion (CVR)**\
  A desired outcome (often purchase or qualified lead) divided by a base (clicks or sessions). Conversion rate helps measure how effectively AI traffic turns into business outcomes.

### Identity & stitching

* **Identity Graph**\
  A table joining `client_id`, `server_session_id`, hashed email, and user/account IDs.
* **Deterministic Match**\
  High-certainty connection (e.g., redirector `link_id` + session, or logged-in user).
* **Semi-Deterministic Match**\
  Strong but not perfect signals (e.g., redirector referrer + near-instant session).
* **Probabilistic Match**\
  Statistical linkage using features like time gap, geo, device family, and URL similarity.
* **Cross-Device Stitching**\
  Merging identities across devices via hashed email, login, or server-side IDs.

### Attribution & models

* **Attribution**\
  The method of assigning credit (and revenue) to touchpoints that influenced a conversion. Attribution helps determine how much revenue or pipeline is influenced by AI-driven traffic.
* **Attribution Model (Selector)**\
  Switchable logic: Last-Touch, First-Touch, Position-Based (40/40/20), Time-Decay, or Data-Driven.
* **Last-Touch**\
  100% credit to the final touchpoint before conversion.
* **First-Touch**\
  100% credit to the initial AI touchpoint (first impression/click).
* **Position-Based (40/40/20)**\
  40% to first AI touch, 40% to last pre-purchase touch, 20% split across middle touches.
* **Time-Decay**\
  Credit weighted by recency (configurable half-life).
* **Data-Driven Attribution**\
  Algorithmic approach (e.g., Markov/Removal Effect or Shapley) estimating each touchpoint’s incremental impact.
* **Lookback Window**\
  Time span during which touches are eligible to receive credit (e.g., 7 days for clicks).
* **Attribution Confidence**\
  A 0–100 score reflecting certainty of the AI→session→order linkage.
* **Confidence Tiers**\
  High (≥0.80), Medium (0.60–0.79), Low (<0.60); used for reporting filters.
* **Attributed Revenue**\
  Revenue portion assigned to AI touchpoints under the active model and confidence threshold.

### Analytics objects

* **Journey / Path**\
  The ordered set of AI and on-site events leading to a conversion.
* **Journey ID**\
  A unique ID for a specific path instance used in deep links and audit trails.
* **Timeline**\
  UI visualization of a journey’s events and timestamps.
* **Funnel**\
  Aggregated steps from **Prompt Impressions → AI Clicks → Sessions → Key Events → Purchases**.
* **Category**\
  A thematic grouping of prompts (e.g., “Running”, “Accessories”), used for reporting and drill-downs.
* **Prompt Leaderboard**\
  A ranked table of prompts by revenue, conversions, or efficiency. This helps identify which AI searches generate the most value for your business.
* **Top URLs**\
  Report listing destination pages receiving the most AI-driven traffic/conversions. This helps identify which pages perform best for AI-driven discovery.
* **Anomaly**\
  A statistically significant spike or drop (e.g., day-over-day or week-over-week) with a likely cause (traffic vs CR).
* **Lift**\
  Performance change versus baseline/previous period (e.g., +12%).
* **KPIs**\
  Key metrics surfaced at the top of dashboards (e.g., Attributed Revenue, Conversions, Avg Confidence).

### Data model & fields

* **`ai_impressions`**\
  Table of prompt/answer exposures with `prompt_hash`, `answer_id`, model, position, time, URLs.
* **`ai_clicks`**\
  Click rows with `link_id`, `prompt_hash`, `answer_id`, click time, dest URL.
* **`web_sessions`**\
  Session metadata (first/last seen, geo, device family, first AI params).
* **`web_events`**\
  All tracked events with `event_name` and properties JSON.
* **`orders`**\
  Commerce records with value, currency, items, and session link.
* **`attribution_results`**\
  Computed credit per order by model, with confidence and explanations.
* **`link_id`**\
  Unique ID assigned by the redirector when generating decorated links.
* **`ai_model`**\
  The assistant model name (e.g., “gpt-4o”) stored with impressions/clicks.
* **`utm_source` / `utm_medium` / `utm_campaign` / `utm_content`**\
  Standard acquisition tags used alongside AI params.

### Governance, privacy & reliability

* **Consent Gate**\
  Logic that defers non-essential tracking until user consent is granted.
* **Data Retention**\
  How long raw versus aggregated data are stored (e.g., 25 months for raw).
* **Access Controls**\
  Role-based permissions for sensitive views (identity, raw payloads).
* **Sampling**\
  Processing a subset of events for speed/cost, with safeguards for accuracy.
* **Backfill**\
  Recomputing histories after schema/model changes or late-arriving data.
* **Deduplication**\
  Process to prevent multiple event records for the same user action.
* **Schema Versioning**\
  Version tags on event payloads/tables to manage change safely.

### UI & workflow terms

* **Model Picker**\
  Control to switch the active attribution model across widgets.
* **Confidence Threshold**\
  Filter to include/exclude low-certainty attributions from totals.
* **Drill-Down**\
  Navigation from aggregates (category) to specifics (prompts/URLs), then to journeys.
* **Export**\
  CSV/JSON/PNG outputs for tables and charts.
* **Virtualization**\
  Rendering technique that keeps tables fast with 1,200+ prompts.
* **Tooltip Copy**\
  Short definition text used in the UI (often derived from this glossary).