ga4_update_measurement_protocol_secret

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

With no annotations provided, the description adds key behavioral context: it is a write operation (tagged [GA4 WRITE]), renames the secret, uses automatic updateMask derivation, and requires confirmation. However, it does not discuss side effects, rate limits, or error conditions, leaving some behavioral aspects uncovered.

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 sentences, front-loaded with the core purpose. Every phrase adds value, with no redundant or filler text. Efficient and scannable.

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?

Despite no output schema and no annotations, the description covers the operation, parameter usage, and prerequisites adequately. It does not explain the return value, but for a simple rename operation that is acceptable. The description is sufficiently complete for an agent to invoke correctly.

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?

The description adds meaningful guidance beyond the schema: it explains the updateMask derivation logic and the confirm parameter's role as a write guard. Given 75% schema coverage, this complements the existing schema descriptions for name and displayName.

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 ('Rename') and the resource ('Measurement Protocol secret'), with a '[GA4 WRITE]' prefix. Among sibling tools that include create and delete operations for the same resource, this description distinguishes the update (rename) functionality.

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 provides explicit prerequisites ('Requires GA4_MCP_ENABLE_WRITES=true and confirm=true') and usage guidance for the updateMask parameter ('Pass only the fields to change; updateMask is derived from them'). It does not explicitly mention when not to use or name alternatives, making it clear but not exhaustive.

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