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

No annotations are provided, so the description carries the full burden. It mentions the tool executes a scanner and returns a test response or error message, but it lacks details on behavioral traits such as permissions required, rate limits, execution time, or what constitutes a 'test response' versus actual output. This leaves significant gaps in understanding the tool's behavior.

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 appropriately sized and front-loaded, starting with the core purpose. The structure with 'Args:' and 'Returns:' sections is clear, but the 'Returns' section is vague ('Test response or error message'), which slightly reduces efficiency. Overall, it is concise with minimal waste.

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 complexity (executing a scanner with one parameter) and lack of annotations and output schema, the description is moderately complete. It covers the purpose and parameter semantics but lacks details on behavioral aspects and output specifics, making it adequate but with clear gaps for an agent to rely on.

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 meaning beyond the input schema by explaining that the 'image' parameter is a 'container image name/reference to scan'. Since the schema description coverage is 0% (no schema descriptions provided), this compensates well for the single parameter, clarifying its purpose and format, though it could specify examples or constraints.

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 purpose with specific verbs ('execute', 'generate') and resources ('Trivy scanner', 'SPDX SBOM', 'container image'), and distinguishes it by specifying the format ('SPDX JSON format'). There are no sibling tools to differentiate from, but the description is precise and unambiguous.

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 implies usage for scanning container images to generate SBOMs in SPDX JSON format, but it does not provide explicit guidance on when to use this tool versus alternatives (e.g., other scanning tools or formats) or any exclusions. Since there are no sibling tools, the lack of alternatives is acceptable, but no broader context is given.

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