ga4_create_display_video_360_advertiser_link

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

No annotations are provided, so the description carries full burden. It indicates a write operation and required confirm flag but does not disclose success/failure behavior, idempotency, side effects, rate limits, or permissions beyond the environment variable. Minimal behavioral detail.

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: one sentence with a clear structure. It front-loads '[GA4 WRITE]' and immediately states the action and resource. No extraneous text.

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 description lacks information about return values (no output schema), what happens on success/failure, and does not mention advanced features via the body parameter. For a create tool, it is minimally complete; more detail on the response or next steps would improve it.

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% with all parameters described. The description adds no extra meaning beyond confirming the confirm parameter must be true, which is already in the schema. 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 clearly states the tool creates a Display & Video 360 advertiser link, with the verb 'Create' and the specific resource. It distinguishes from sibling tools like update and delete by the action. The [GA4 WRITE] prefix adds context.

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 mentions prerequisites (GA4_MCP_ENABLE_WRITES=true and confirm=true) but provides no guidance on when to use this tool versus other GA4 create links (e.g., Google Ads, Search Ads 360) or what conditions justify its use. No alternative tools are suggested.

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