ga4_create_property

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

Annotations already cover the mutation profile (readOnly=false, destructive=false, idempotent=false, openWorld=true). The description adds genuinely new behavioral context: the property cannot be removed afterwards by this server, which is an irreversibility warning not captured by destructiveHint=false, plus sequencing to the data stream step.

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?

Four short sentences, front-loaded with the core action and followed by usage, irreversibility, and next steps. Each sentence carries information; minor tightening is possible but nothing is wasted.

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 creation tool with annotations and no output schema, the description covers trigger, parent scoping, irreversibility, and follow-up calls. It stops short of noting what the newly created property returns (e.g., property ID), which would help since no output schema exists.

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 description coverage is 100%, so all five parameters including account_id and industry_category are documented in the schema. The description names three of the fields but adds no format or constraint detail beyond the schema, so the baseline 3 applies.

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?

States a specific verb+resource (create a GA4 property), names the parent resource (account), and lists the key fields (display name, timezone, currency). An agent can distinguish this from ga4_list_properties and ga4_get_property immediately.

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?

"Use when the user asks to provision a GA4 property" gives a clear trigger, and it explicitly routes to ga4_list_properties first and ga4_create_data_stream next. No explicit when-not condition (e.g., vs add_property) is given, so it falls short of a 5.

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