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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered elsewhere. The description adds no behavioral context of its own — nothing on result volume, pagination, search semantics, or what visibility the token grants — so it contributes essentially nothing beyond structured data.

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 front-loaded sentence with zero wasted words, which is structurally sound. However, the brevity reads as under-specification rather than discipline, since no filtering or result-shape guidance is given.

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 zero-required-parameter read-only list tool with full schema coverage and an output schema, the description is minimally sufficient. It still omits whether results are paginated or how the free-text query and category filters combine, which an agent would need before invoking confidently.

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% and all three parameters are documented in the schema, including the conditional business_id rule, so the baseline of 3 applies. The description adds no further meaning about how query and category interact or how matching is performed.

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 and resource ('List agent knowledge base entries') plus scope ('for a business'), which cleanly separates it from the mutation sibling upsert_knowledge. It stops short of naming alternatives or explaining what an entry contains, so a 4 rather than a 5.

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?

Usage is only implied by the verb 'List' — an agent can infer this is the read path versus upsert_knowledge, but the description never says when to prefer it, whether it paginates, or whether query/category are combinable. No explicit when-not or alternative routing is provided.

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