Generate random fingerprint

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

Annotations already declare readOnlyHint=true, so the read-only nature is covered. The description adds that values are 'coherent' and that it's for previewing, but does not disclose output structure or other behavioral details like whether required_types affects generation beyond the schema.

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?

Two sentences, front-loaded with the main purpose, and every sentence adds value: the first states the action, the second gives usage context and alternative. No unnecessary words.

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?

The tool is simple (read-only random generation) and the description covers purpose, usage, and alternative. However, without an output schema, the description could have explicitly described the return format, but it hints at 'preview values' and 'fill advanced manually', which is sufficient for an agent to understand the result. It lacks any mention of required_types, but that is a parameter semantics concern rather than overall completeness.

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 only 50% of parameters with descriptions (system_version and required_types have descriptions, system_os and gpu_adapterinfo_vendor do not). The description does not add any parameter-level meaning, only referencing 'an OS' broadly. It does not explain gpu_adapterinfo_vendor or how required_types works, so it fails to compensate for incomplete schema coverage.

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 'Generate a coherent set of random fingerprint values for an OS' with a specific verb and resource, and explicitly distinguishes it from create_profile by noting that create_profile auto-generates omitted fingerprint fields.

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 'Rarely needed' and names create_profile as the alternative that auto-generates these fields, and states it is 'Useful to preview values or fill advanced manually,' giving clear when-to-use guidance.

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