Insights ga4 reconcile

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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint and destructiveHint=false, so safety is covered. The description adds real context beyond that: the comparison is daily, restricted to google / cpc traffic, and output includes flagged gaps. It does not explain what threshold constitutes a 'gap' or any limits on the comparison window.

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?

A single front-loaded clause with no filler; the comparison and its scope come first. It is arguably over-compressed given how much is left unstated, but there is no wasted wording.

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?

An output schema exists, so return values need not be described. However, for a three-parameter cross-system reconciliation tool the definition omits parameter meaning, default lookback behavior, and what a 'flagged gap' actually is, leaving meaningful gaps for an agent trying to call it 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?

Schema description coverage is 0%, so the description must carry the burden and it largely does not. The dual-system phrasing implies an Ads account plus a GA4 property but never maps these to customer_id and property_id, and the days parameter and its 28-day default are never mentioned.

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 names both compared resources (Google Ads conversions, GA4 key events), the granularity (daily), and a scoping filter (google / cpc), which distinguishes it from siblings like ads.report.conversions or ga4.report. The trailing 'with flagged gaps' is vague but the core verb+resource is clear.

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?

There is no explicit when-to-use or when-not guidance and no alternative tool is named. The reader must infer that this is for Ads-vs-GA4 discrepancy investigation rather than for plain reporting via ads.report.conversions or ga4.report.

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