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

No annotations are provided, so the description carries the full burden. It discloses useful behavioral facts: the search covers the English beginner's guide, output is in Traditional Chinese, and the return shape is chapters and paragraphs. However it says nothing about permissions, matching behavior (keyword vs semantic), result limits, or whether it is read-only.

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?

One compact sentence with the category tag front-loaded and no filler. It is slightly dense with parenthetical qualifications, but every clause carries information.

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 simple one-parameter search tool with no output schema, the description covers purpose, language, and return unit. The main gap is routing relative to the other riftbound retrieval tools, which is exactly what an agent needs to make the right call.

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% for the single query parameter, so the schema already documents it with examples (Hold, sideboard). The description adds no additional parameter meaning beyond restating that it is a search, so the baseline of 3 applies.

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+resource (search Riftbound TCG rules commentary in the beginner's guide) and adds scope details (English guide, Traditional Chinese output, returns chapters and paragraphs). It is clear what the tool does, but it never contrasts itself with the sibling tools riftbound__get_chapter, riftbound__get_faq, or riftbound__lookup_term, so an agent cannot easily tell which riftbound retrieval tool to pick.

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?

There is no when-to-use guidance, no exclusions, and no mention of alternatives even though three sibling riftbound tools (get_chapter, get_faq, lookup_term) target overlapping content. The agent must infer the selection logic entirely on its own.

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