get_ga4_auth_setup_instructions

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

No annotations exist, so the description carries the full burden. It discloses that the tool returns steps and prefers a service account under a specific condition, but does not detail what the steps include, whether authentication is required, or any side effects. This is adequate but not comprehensive.

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 extremely concise with two sentences: the first clearly states the purpose, and the second adds a specific usage hint. No redundant information.

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?

The tool has an output schema (not shown but present), so explaining return values is unnecessary. The description, combined with the output schema, provides sufficient context for an agent. However, it could briefly mention what the auth steps cover or how they relate to other sibling tools.

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 tool has zero parameters, so the schema is empty and fully covered. The description adds no parameter information, but the baseline for zero parameters is 4, as there is nothing to enhance.

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 returns GCP/GA authentication steps, with a specific preference for service accounts when a certain error occurs. This distinguishes it from sibling tools like create_web_data_stream or provision_ga4_property which involve creation or provisioning.

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 for obtaining authentication setup instructions but does not explicitly state when to use this tool over alternatives. It provides a conditional preference but lacks clear guidance on when not to use or what distinguishes it from similar tools for auth.

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