ga4 get property quotas snapshot

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

Annotations already declare read-only/idempotent/non-destructive, and the description adds meaningful behavior beyond that: it targets the v1alpha endpoint, does not execute a report, and still consumes one property-quota token. The quota-charging detail is exactly the non-obvious behavior a caller needs to know.

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?

Two focused sentences front-load the core action and then add the one cost caveat that matters. No redundant phrases.

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?

For a one-parameter read tool with a full output schema and safe annotations, the description covers action, endpoint, and the only non-obvious call consequence. Nothing essential is missing.

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?

Schema coverage is 100%, so the single required propertyId is already documented, and the description adds no additional parameter meaning beyond confirming the endpoint context. Baseline 3 is appropriate.

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 opens with a specific verb ('Read'), a precise resource ('current GA4 Data API property quota snapshot'), and the endpoint ('official v1alpha endpoint'). It also distinguishes itself from report-generation siblings by stating it does not run a report.

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 a monitoring use case and warns against treating it as a report, but it never explicitly states when to choose this tool over siblings or what conditions should trigger its use. The cost note is useful context but not direct routing guidance.

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