ga4_get_event_parameters

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

With no annotations, the description carries the transparency burden. 'Best-effort' and 'Documents Data API limitations for raw parameters' are genuinely useful behavioral caveats, and the source mix is disclosed. However, it does not state read-only safety, output behavior when no parameters are found, or any API/quota implications.

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 two tight sentences: the first states the core result and source, the second states a key limitation. Every word earns its place and the most important qualifier is front-loaded.

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 6-parameter tool with no output schema and no annotations, this is thin. An agent still does not know the return shape, how eventNames or dates shape the inventory, or which sibling should be preferred in a given scenario. The best-effort caveat is valuable but insufficient.

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 description does not elaborate on any specific parameter's meaning or format. With 4 of 6 parameters already documented in the schema and datePreset/limit semantics reasonably encoded by defaults and enums, the description's lack of parameter detail is acceptable though not compensatory.

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 deliverable ('event parameter inventory') and its data sources ('GA4 metadata plus event reports'), and flags the best-effort nature. It distinguishes the tool's niche among GA4 siblings, though it does not explicitly name or contrast sibling tools.

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?

There is no explicit guidance about when to use this tool versus alternatives like ga4_get_custom_definitions or ga4_run_report. The 'best-effort' caveat implies use for reconnaissance rather than authoritative answers, but no when-to-use or when-not-to-use context is provided.

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