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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is covered. The description adds genuinely useful non-schema context — the 2-credit cost — but says nothing about whether the constraint parameters can be freely combined (pattern with green with yellow) or what happens on conflicting input.

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 efficient sentence with the cost note appended, and the core purpose is front-loaded. Minor waste in the 'Wordle Helper: Wordle Helper is...' prefix that repeats the name and title verbatim.

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?

Output schema exists, so return values need no explanation, and all parameters are optional and fully schema-documented. The only real gap for a zero-required-param solver is guidance on which parameter combinations are valid.

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 coverage is 100%, so all five parameters including the green/yellow position syntax and the limit default are already documented in the schema. The description restates the three constraint categories in prose but adds no new meaning, and never mentions the 'pattern' or 'limit' parameters.

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: 'Wordle solver API that finds possible 5-letter word solutions' from green/yellow/gray constraints. The domain is narrow enough that it is distinguishable from siblings like WordScrambleGenerator or AnagramDetector, though it never names an alternative explicitly.

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?

No when-to-use or when-not-to-use guidance, no prerequisites, and no mention of alternatives such as Dictionary or WordLexiconAnalyzer for other word-lookup needs. Usage must be inferred entirely from the tool name and domain.

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