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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered by structured data. The description's only behavioral addition is the version-selection heuristic (package.json, fall back to 'latest'); it says nothing about result format, ranking, or result-size behavior beyond what the schema states.

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?

Three sentences, front-loaded with purpose, then scope, then the version tip. No filler, though the product list is partly redundant with the product parameter's own enumerated examples in the schema.

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 read-only search tool with full annotation coverage and no output schema, the description supplies purpose, scope, and the one non-obvious usage rule (version handling). The remaining gap is sibling routing versus skill_bryntum_*, which the agent would have to reason out on its own.

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 coverage is 100%, so the baseline is 3, but the description adds genuinely new parameter meaning not in the schema: where to find the version value (package.json) and the fallback to 'latest'. The enumeration of products also reinforces the product filter's expected values.

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 verb+resource ("Search Bryntum product documentation") and enumerates the content classes it covers (API references, configuration options, examples, best practices) plus the supported products. It does not, however, differentiate itself from the skill_bryntum_* siblings, which is the main selection ambiguity an agent faces here.

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?

"Use this to find API references, configuration options, examples, and best practices" gives clear positive context for invocation, and the version instruction covers a common failure mode. There are no exclusions or routing cues against the many skill_bryntum_* siblings, so the agent must infer when a skill tool is preferable.

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