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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint=false, covering the safety profile. The description adds valuable behavioral context beyond annotations, such as defaulting to trusted college-baseball domains and returning the provider in response metadata. It does not mention rate limits or pagination, but given the annotation coverage, this is acceptable.

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 two sentences, front-loads the primary action, and wastes no words. The first sentence establishes purpose, the second provides usage guidance and a key behavioral note. Every sentence earns its place.

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 simple search tool with comprehensive annotations and full schema coverage, the description is mostly complete. It explains the use case, domain default, and metadata return. It does not describe the full response format, but with no output schema, this is a minor gap. Overall adequate and complete enough for an agent to invoke correctly.

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 100%, so the input schema fully documents all three parameters (query, limit, domains). The description only reiterates the domain default behavior already present in the schema, adding no new parameter-level meaning. Hence the baseline of 3 is appropriate.

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 searches the open web for specific types of college-baseball content (news, scouting reports, beat-writer coverage, analytical commentary). The phrase 'Use this when a question needs narrative context' explicitly differentiates it from the structured-data siblings like bsi_get_rankings or bsi_get_scoreboard, making the purpose highly distinguishable.

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 provides a clear context for when to use the tool ('when a question needs narrative context'), implying it is for unstructured or qualitative queries. It does not explicitly name alternatives or provide 'when not to use' exclusions, but the sibling list and the contrast with structured data make the usage boundary reasonably clear. Lacks the explicit alternative naming needed for a 5.

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