> ## Documentation Index > Fetch the complete documentation index at: https://docs.vijil.ai/llms.txt > Use this file to discover all available pages before exploring further. # Resource > A single thing a Collector found. A **Resource** is one thing a [Collector](/concepts/discovery/collector) found: a service, a model, an agent, a function. ## What a Resource Carries | Field | What it tells you | | - | - | | **Identity** | A stable identifier for the thing itself, distinct from what any single scan observed | | **Type** | What kind of thing it is: agent, model, function, runtime | | **[Classification](/concepts/discovery/classification)** | Whether it is AI, and the written reason for that verdict | | **Evidence** | Where the Collector saw it, what answered on which port, and what the verdict rests on | | **Sightings** | Every scan that has observed it, including first seen and last seen | | **Source** | Which Collector reported it, and from which [Target](/concepts/discovery/target) | ## Identity Across Rescans Discover identifies a Resource by the most durable signal available to the Collector that found it. Identifiers fall into two groups: | Group | Based on | Survives a rescan | | - | - | - | | **Name-based** | The name a catalogue gives it: a Kubernetes service path, a deterministic cloud resource identifier | Yes | | **Observation-based** | What the thing looked like: a certificate, a host and port, an inferred fingerprint | Not reliably | Observation-based identities shift during ordinary operations. A certificate renews, a host takes a new address, or a model list changes. The same service then returns under a different identifier. ## Next Work through what a scan returned, including what it could not see. This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.