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

Beyond the read-only, open-world, idempotent annotations, it discloses the searched corpus and explains that results are best-matching documentation sections containing a URL and snippet rather than complete pages. The companion-tool handoff clarifies the retrieval workflow, although operational details such as ranking or freshness are not discussed.

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 dense but efficient, front-loading the purpose and searchable content before covering use cases, result behavior, and exclusions. Each sentence supports tool selection or invocation, and the examples are brief and relevant.

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?

Together with the rich input schema, output schema, and safety annotations, the description provides everything needed to select and invoke the tool correctly. It covers scope, appropriate and inappropriate queries, result granularity, and the next step for retrieving complete documentation.

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 already fully documents all six parameters, including paging, product filtering, defaults, and response verbosity. The description adds useful natural-language query examples and product-scope context beyond those field definitions, but most detailed parameter semantics remain in 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 uses a specific verb and resource, identifying searches of the Siemens Developer Portal and enumerating the documentation types and platforms covered. It clearly distinguishes this technical-documentation search from general Siemens search and from full-page retrieval.

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?

It explicitly says to use the tool for technical questions about Siemens APIs and developer tools, with concrete example queries. It also gives an exclusion for marketing, company, and product-catalog questions, routes those to siemens_search, and directs full-page reads to siemens_get_web_content.

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