ga4_get_metadata

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It clearly indicates a read-only metadata operation, but it does not describe the response structure, whether custom dimensions/metrics are included, or how the propertyId is validated. The core behavior is visible, but deeper behavioral context is missing.

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 is a single, front-loaded sentence with no filler or redundant phrasing. Every word contributes to defining the operation and the object it operates on.

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 low-complexity tool with one fully documented required parameter and no output schema, the description states both the action and the expected output type ('available dimensions and metrics'). It is nearly complete, though adding a note about using this before running GA4 reports would strengthen it further.

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 fully documents the single parameter with 'GA4 Property ID', so schema coverage is 100%. The description adds no extra semantic detail about the parameter beyond what the schema already provides, so the baseline score of 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 uses a specific verb ('Gets') and a precise resource ('available dimensions and metrics for a GA4 property'), making the tool's purpose immediately clear. It also distinguishes itself from sibling tools like ga4_get_property and ga4_run_report by focusing on metadata discovery rather than property settings or report data.

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 the tool is used when an agent needs to know which dimensions and metrics are available for a GA4 property, but it does not explicitly state when to prefer this over related tools such as ga4_list_custom_dimensions or ga4_run_report. There are no usage exclusions or alternative tool references.

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