ga4_update_google_signals

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

With no annotations, the description must disclose behavioral traits. It explains the effect (turning on/off cross-device and demographics collection) and mentions the confirmation requirement. However, it lacks details on permissions needed, whether changes are immediate, or any side effects on existing data. This leaves some transparency gaps.

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 with a leading tag and parenthetical note. It is concise and front-loaded with the action. Every word serves a purpose: action, resource, effect, 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?

Given the tool's simplicity (3 parameters, no output schema, no annotations), the description covers the essential context: purpose, parameters, and usage requirements. It could mention the return value or that the change is reversible, but overall it is sufficiently complete for an on/off toggle.

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 schema covers property and confirm with descriptions (67% coverage), leaving the state parameter undescribed. The description partially compensates by stating 'on or off', which maps to the two enum values. But it doesn't explain the exact string values (GOOGLE_SIGNALS_ENABLED/DISABLED), so minimal added value beyond the schema.

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 tool's action: 'Turn Google Signals on or off for a property'. It specifies the resource (property) and the verb (turn on/off), and distinguishes it from other GA4 update tools by focusing specifically on Google Signals. The tag '[GA4 WRITE]' further clarifies the operation type.

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 usage prerequisites: 'Requires GA4_MCP_ENABLE_WRITES=true and confirm=true.' It also advises that the user must confirm their privacy disclosures cover the collection. While it doesn't explicitly state when not to use it, the prerequisites sufficiently guide appropriate usage.

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