ga4_create_property

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

With no annotations provided, the description carries full burden. It discloses the write nature and required conditions, but does not detail potential errors, side effects, idempotency, rate limits, or return values. It is somewhat transparent but lacking depth.

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 sentence that conveys purpose and prerequisites efficiently. It is front-loaded and concise, though it could be expanded slightly without losing conciseness.

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?

Given the complexity of a write operation with 6 parameters and no output schema, the description covers the essentials but omits response format, post-creation behavior, and parameter details beyond prerequisites. It is adequate but not fully complete.

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 67% with most parameters described. The description reinforces 'confirm=true' but does not add new information beyond the schema. Baseline is 3 for high coverage; description adds marginal value.

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 'Create a new GA4 property under an account.' This is a specific verb+resource pair, and the sibling list includes distinct tools like ga4_delete_property, ga4_update_property, and other ga4_create_* tools, so it differentiates well.

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 explicitly lists prerequisites: 'Requires GA4_MCP_ENABLE_WRITES=true and confirm=true.' This guides the agent on when the tool is usable. However, it does not mention when not to use it or provide direct alternatives, but the prerequisites are actionable.

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