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

Annotations already declare readOnlyHint=true, so the safety profile is covered. Beyond that, the description's mode/result-cardinality hint largely repeats the id parameter's own schema text ("Fetch one record by id; omit to query many") and says nothing about pagination, default limits, or result volume.

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 filler; the two modes are stated in the order an agent would reason about them (id first, then query). Nothing wastes space.

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 six-parameter tool with no output schema and one nested object, the description adequately frames the two invocation modes, and pagination/sorting details live in the schema. It could say more about what a LimStory record contains, but no output schema exists so that burden is light.

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 83%, so the schema already documents nearly every parameter including the MongoDB-style query example and the limit clamping behavior. The description adds no syntax, format, or defaulting detail beyond what the schema already states, which is the baseline case.

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 ("Find") and a specific resource ("LimStory records"), and distinguishes the two operating modes (single by id vs. filtered list). It does not differentiate itself from the ~48 sibling query_lim* tools beyond the resource name, so it is clear but not sibling-aware.

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 mode-selection guidance: pass id for one record, query for a filtered list. It offers no when-not guidance, no prerequisites, and no routing advice relative to the many other query_lim* tools, so usage is implied rather than fully specified.

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