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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint, so the safety profile is fully covered. The description adds the pagination model and the shape of each result (scan, page URL, script URL, version), which is modest extra context beyond the annotations.

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 tight sentence that leads with the pagination model and the result contents, with no filler. It could be marginally improved by front-loading the library filter, which is the actual selection criterion.

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 spelled out, and the description nonetheless summarizes them. What is missing for a search-by-attribute tool is selection guidance and parameter semantics for the required 'library' argument, so it is adequate rather than complete.

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 compensate, and it partially does by identifying limit/offset as pagination and library as the filter. It omits defaults, accepted value forms, and any note on whether library matching is exact or substring, leaving real ambiguity for the required parameter.

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?

States a specific resource (archived script fingerprints) with a clear filter condition (detected as a given library) and the returned fields. It does not, however, differentiate itself from very close siblings like search_js_fingerprint_by_library (singular) or search_jsfingerprints_by_library_version, which an agent could easily confuse it with.

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 when-to-use guidance, no prerequisites, and no mention of alternatives. Given the many near-identical search_jsfingerprints_* siblings, some routing guidance (e.g. use this when you have a library name rather than a hash) would be valuable and is absent.

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