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

With no annotations, the description carries the full burden and does disclose important behavioral details: lean summary output, field names, supported sort fields, filter prefixes, and the unusual timestamp operator constraint. It does not mention authorization requirements, rate limits, or explicitly state read-only behavior, but the list/summary framing strongly implies a safe read operation.

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 front-loaded with purpose and return shape, then moves into filter and sort details in a logical order. It is dense and mostly earns its length, though some operator text duplicates what already appears in the fieldFilters schema description, which makes it slightly longer than strictly necessary.

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?

There is no output schema, so the description appropriately explains the returned envelope and item fields. It also covers filtering, sorting, field operators, and the key timestamp range caveat, which is complete context for a six-parameter list/filter tool.

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 already 100%, but the description adds substantial meaning beyond the schema by naming sortable fields, filter prefixes, supported field operators, and concrete range-filter examples. The timestamp restriction is especially valuable because it prevents the agent from constructing unsupported filters.

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 opens with a specific verb and resource—'List and filter Mallory vulnerabilities'—and immediately clarifies the return shape as lean summaries rather than full objects. It also explicitly routes full-detail retrieval to getVulnerability, so the agent can distinguish this listing tool from the detail tool without opening the schema.

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 gives clear context for using this tool when the goal is a filtered vulnerability list, and it names getVulnerability as the alternative for full detail. However, it does not explicitly differentiate this tool from searchVulnerabilities, which is another plausible sibling, leaving some ambiguity about when semantic search should be preferred.

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