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

Annotations already declare readOnlyHint, idempotentHint, non-destructive and closed-world, so the safety profile is covered. The description adds genuinely useful behavior beyond that: the ranking is based on forward results that are only scored after registration, which tells the agent the leaderboard cannot be gamed by backtest history. It says nothing about ordering ties, pagination, or how many fields each row carries.

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 short sentences: purpose first, parameter second, alternative last. Nothing is redundant and the most important framing — what question this answers — is front-loaded.

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 single-optional-parameter read tool with rich annotations and no output schema, the description covers what is returned (a ranked verified-strategy leaderboard) and how ranking is defined. The main remaining gap is the shape of the rows and whether results are truncated at limit without any paging mechanism.

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 0%, so the description has to carry the parameter, and it does flag limit as optional with '(1-200, default 50)' — though that is essentially a restatement of the minimum/maximum/default already in the schema. It never says what limit counts (strategies returned, presumably), which is the one piece of meaning that would have added value.

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 concrete question it answers ('which verified strategies are leading?') and then states the resource returned: 'the leaderboard of verified strategies, ranked on forward results scored only after registration.' It also names the sibling get_verified_record and what that one is for, so an agent can separate the board from the single-record lookup without opening either 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?

It routes the agent explicitly: use this for the ranked board, use get_verified_record 'for one record's full detail.' That is a clear use/alternative split, but there is no explicit when-not guidance (e.g., whether it covers only published/registered strategies or how it relates to list_strategies).

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