direct_deduplicate_keywords

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

Annotations already declare readOnlyHint, idempotentHint and destructiveHint=false, so the 'Read-only' tail adds little. What does add value is the disclosed limit of 'up to 10000 phrases' and the guarantee that 'nothing is saved', which are concrete behavioral constraints not present in the annotations. It still says nothing about failure modes when the limit is exceeded.

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?

Two compact sentences with the core action front-loaded and the constraints trailing; nothing is padded. The trailing 'Read-only' is redundant with the annotations but costs only a few words.

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?

An output schema exists, so return values need no explanation, and the size/save guarantees are covered. The gap is the undocumented operations parameter and the absence of any detail on how cross-negatives are generated, which leaves the tool's transformation behavior only partially specified.

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 0%, so the description must compensate, and it largely does not. The 'phrases' wording loosely maps to the keywords array, but the 'operations' parameter (array of strings or null, no enum, no description) is entirely unexplained — an agent has no idea what operations are accepted or what omitting it does.

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 gives a specific verb and resource: it merges duplicate phrases and adds cross-negatives to keywords. No sibling tool in the list performs deduplication, but it never names an alternative or counterpart, so it falls short of full sibling differentiation.

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 phrase 'before adding keywords' implies this is a pre-processing step in a keyword-creation workflow, which is a genuine usage cue. However, there is no explicit when-not guidance, no prerequisites, and no named alternative tool for agents weighing this against other keyword tools.

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