spellbook_estimate_bracket

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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint. Description adds minimal behavioral context (returns bracket tag and findings). No details on computation cost, rate limits, or what constitutes 'bracket-relevant findings'. Adequate given annotations, but does not exceed them.

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 sentences: purpose, input format, output format. Every sentence adds value. Front-loaded and free of fluff.

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 two-parameter tool with full schema descriptions and annotations, the description sufficiently covers inputs and outputs. Lacks explanation of bracket tag range or examples, but overall complete for typical use.

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 covers both parameters with descriptions (100% coverage). Description restates the input format without adding new meaning or constraints. Baseline score of 3 is appropriate since schema does the heavy lifting.

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?

Clearly states the tool estimates Commander bracket (power level) for a decklist, specifying inputs (commander names + decklist) and outputs (bracket tag + findings). Differentiated from sibling tools like spellbook_find_combos by focusing on power level estimation.

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?

Implied usage: if you need bracket estimate, use this tool. However, no explicit guidance on when not to use it or alternatives (e.g., for combo detection or deck retrieval). Lacks context to disambiguate from similar bracket-related tools.

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