R18.6: Aria attributes validity

Short answer: Aria-* attributes use valid names and permissible state values. An invalid aria attribute is ignored, so the control has no name.

Group: Accessibility (WCAG 2.1 AA). Status: stable. Generated from the rule definitions; do not edit by hand.

Playground: https://brevio.pro/tools/agent-guard-playground?rule=R18.6

What it catches

Aria attributes validity: aria-* attributes use valid names and permissible state values.

Why

An invalid aria attribute is ignored, so the control has no name.

A bad example

<div aria-lable="Close" />

A good example

<div aria-label="Close" />

How it is checked

Nothing yet. No scanner and no slice card checks it: it is a standing rule for authors and reviewers.

How to silence it

A person can silence one finding with brevio-core: ignore R18.6 -- reason on the line or the line above. Without the reason it does not count. An agent cannot silence it: the agent hook and the MCP tools never honour the comment, and a pull request that adds one is reported until a reviewer allows it. Fixing the code is still the better answer.

To change what the rule flags, edit its definition in dev_rules.py or code_rules/__init__.py. That is a code change and is reviewed like one.

R18.7 Visible focus rings
R18.8 Document language attribute
R18.1 Meaningful image alternative text
R18.2 Form control labels
Every rule