serp_analysis

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

With no annotations provided, the description carries the full burden, and it does disclose the key behavioral facts: it returns exactly ten organic results with authority metrics, snippets, and SERP feature detection, and it costs a listed price. It does not mention rate limits or authentication, but for a read-style analysis tool the return contract is otherwise explicit.

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 compact and front-loaded with the core action, followed by cost and a bulleted return list. Every sentence earns its place, and the structure makes the return contract easy to scan. The only mildly cryptic element is 'x402 on Base,' but it does not hurt readability.

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 low-complexity tool with one required parameter, the description provides enough to invoke it: the required keyword, cost, and a detailed list of return values. It could add explicit notes on how language and location affect results or describe the exact response format, but with no output schema the Returns list largely covers an agent's needs.

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%, since keyword, language, and location each have explicit descriptions in the input schema. The tool description itself adds no extra meaning about how language or location affect the analysis, so it stays at the baseline of 3.

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 opening line names a specific action ('Analyze the top 10 SERP results') and a concrete resource ('for a keyword with metrics'), so an agent can immediately identify this as the SERP-analysis tool rather than a generic keyword tool. The bulleted return list further pinpoints the tool's scope, distinguishing it from siblings like keyword_research and backlink_profile.

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 never says when to choose serp_analysis over keyword_research, on_page_audit, or backlink_profile. There is no 'use when...' or 'instead of...' guidance; the closest is the implication in the first line, which is not an explicit routing rule.

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