Android 16 / API 36 Compliance Checker

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true, indicating the tool is a read-only reference. The description adds context about the mandatory deadline and the problem with AI-generated manifest flags, which is useful but does not disclose additional behavioral traits (e.g., response format, pagination). With annotations covering safety, the description provides adequate but not extensive transparency.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description front-loads the essential purpose and mandatory date. It then explains the problem and lists topics. While slightly verbose (e.g., spending statistics), every sentence adds value. It could be trimmed slightly, but overall it is well-structured and efficient for the information density.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's simplicity (1 optional parameter, no output schema) and the presence of annotations, the description is complete. It covers what the tool does, why it matters (mandatory compliance, demotion), and the available topics. No additional information is needed for an agent to understand when and how to invoke this tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema covers 100% of parameters (topic) with a description. The description goes beyond by enumerating valid topic values: 'compliance', 'layouts', 'checklist', 'predictive back', 'page size'. This adds semantic meaning that helps the agent select the correct topic, whereas the schema's description is generic.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: 'Android 16 compliance reference — mandatory for Google Play by August 2026.' It specifies the resource (Android 16 / API 36 compliance) and the verb (check/reference). The description distinguishes from siblings by focusing on a specific API level and problem (orientation/resizability), whereas sibling tools cover other API levels or broader Android topics.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage when needing compliance information or resolving App Compatibility warnings, but it does not explicitly state when to use this tool versus alternatives like android_api17_compliance or android_large_screen_guide. No exclusions or alternative tool names are mentioned, leaving the agent to infer the best match from the sibling list.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.