---
title: "AR identifier defined | Agent Ready Checklist"
description: "AR identifier: Stable requirement ID of the form AR-<CATEGORY>-NN with FIND, READ or ACT. Sourced example from github.com. Read 2026-11-04."
canonical: https://agentreadychecklist.com/glossary/ar-identifier
site: "Agent Ready Checklist"
last_updated: 2026-11-05
section: "Glossary"
---

# AR identifier defined | Agent Ready Checklist

> AR identifier: Stable requirement ID of the form AR-<CATEGORY>-NN with FIND, READ or ACT. Sourced example from github.com. Read 2026-11-04.

Source: https://agentreadychecklist.com/glossary/ar-identifier
Site: Agent Ready Checklist
Last reviewed: 2026-11-05
Agent endpoints: https://agentreadychecklist.com/llms.txt (index), https://agentreadychecklist.com/openapi.json (API), https://agentreadychecklist.com/mcp (MCP server), https://agentreadychecklist.com/ask (search)
Access: https://agentreadychecklist.com/auth.md (no key). Pricing: https://agentreadychecklist.com/pricing.md (free).

# AR identifier

Stable requirement ID of the form AR-<CATEGORY>-NN with FIND, READ or ACT. Never reused: a removed ID is retired, and new requirements take the next unused number. Example: AR-READ-10 retired (Aug 2026); pricing became AR-READ-11. AgentReady has 24 identifiers, and four of them are MUST.

## Definition

Stable requirement ID of the form AR-<CATEGORY>-NN with FIND, READ or ACT. Never reused: a removed ID is retired, and new requirements take the next unused number.

## Example

```text
AR-READ-10 retired (Aug 2026); pricing became AR-READ-11
```

## Sources

-   [github.com/agentready-org/standard/blob/main/CHANGELOG.md](https://github.com/agentready-org/standard/blob/main/CHANGELOG.md)read 2026-11-04
-   [github.com/agentready-org/standard/blob/main/spec/spec.md](https://github.com/agentready-org/standard/blob/main/spec/spec.md)read 2026-11-04

Last reviewed 2026-11-05. AgentReady v2.0, read 2026-11-04.