ga4_create_firebase_link

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

No annotations provided, so description carries full burden. It discloses write operation, required confirm parameter, and environment variable requirement. Does not mention side effects or return behavior, but adequately warns about mutation constraints.

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 concise sentences, front-loaded with '[GA4 WRITE]', no redundant information. Every part adds value: action, limitation, prerequisites.

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 simple create tool with 3 required params and no output schema, the description covers purpose, constraints, and key usage notes. Lacks return value details but otherwise complete given tool complexity.

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%, and description does not add meaning beyond schema. The mention of 'confirm=true' aligns with schema's boolean description. Baseline score of 3 applies as description offers no extra parameter insight.

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 action ('Create a Firebase link'), identifies the resource, and distinguishes from update by noting 'no update; delete + recreate to change'. Sibling tool ga4_delete_firebase_link confirms separation.

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?

Explicitly states prerequisites (GA4_MCP_ENABLE_WRITES=true, confirm=true) and indicates when to use this vs. alternative ('no update; delete + recreate to change'). Provides clear context for agent decision-making.

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