player_dyk

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

With no annotations, the description carries the full burden and does so reasonably: it discloses single GET semantics, no auto-pagination, a 100-row/256 KiB local limit, truncation reporting, and refusal of oversized records. It omits auth requirements and rate-limit behavior, but the pagination/limit disclosure is genuinely useful.

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?

Purpose is correctly front-loaded, but the body is padded with boilerplate caveats, including 'Other declared filters are forwarded as supplied' when the schema declares no other filters. A missing period in 'Makes one logical GET request Does not auto-fetch' shows sloppy structure.

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 one-parameter read tool with no output schema and no annotations, the description covers the material behaviors (request count, pagination, size cap, truncation). Only the locale format and error behavior remain unaddressed, which is a minor gap.

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% and the single required param (locale) is never explained beyond 'an explicit locale' — no format, casing, or example. The line 'Required inputs reflect tool policy as well as measured upstream requirements' is meta-commentary that adds no actionable meaning for filling the field.

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 ('Read public did-you-know tips and lore') plus a scope constraint ('for an explicit locale'). The resource is distinctive enough to separate it from most siblings, though it never names the adjacent alternatives (e.g. cards_lore) it could be confused with.

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 only usage-adjacent statement is 'This does not establish coverage of every locale,' which is a caveat, not a when-to-use rule. There is no guidance on when to prefer this tool over siblings, no prerequisites, and no explicit exclusions.

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