ga4_update_property_access_binding

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

Discloses it is a write operation, requires permissions, and describes updateMask derivation behavior. However, no details on success/failure, idempotency, or side effects.

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 brief, front-loaded with [GA4 WRITE], and conveys essential usage and constraints in two sentences with no redundancy.

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?

Covers prerequisites and updateMask behavior well, but omits return value/response format and error handling, which is important for a write operation with no output schema.

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 covers 75% of parameters with descriptions, but the 'roles' parameter lacks both schema description and any hint in the tool description about valid roles (e.g., accepted values). The description does not compensate for this gap.

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 it changes a user's roles on a property via GA4 WRITE, matching the tool name and distinguishing it from related tools like create/delete access bindings.

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?

Specifies required permissions (analytics.manage.users), required configuration (GA4_MCP_ENABLE_WRITES=true, confirm=true), and provides guidance on using updateMask. Lacks explicit exclusion of alternatives like delete.

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