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

With no annotations, the description carries the full burden of behavioral disclosure. It mentions 'value discarded' but does not explain what side effects, if any, occur, what the return value is, or what 'priority' means. The description is too vague to disclose meaningful behavior beyond the fact that some value is discarded.

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?

The description is extremely short, but it is under-specified rather than concise. The phrase 'u=/i= pair count' is jargon that does not earn its place because it is not explained. A single cryptic sentence is not effective 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?

The tool has 9 optional parameters, no output schema, no annotations, and a description that does not explain what the tool does. This is completely inadequate for an agent to select and invoke the tool correctly. Even the tool name 'priority-ok' is ambiguous.

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%, so the schema already documents all 9 parameters. The description adds no parameter-specific meaning beyond the cryptic 'u=/i= pair count' phrase, which does not clearly map to any parameter. Baseline 3 is appropriate because the schema does the heavy lifting, but the description fails to clarify which parameters are involved in the 'pair count'.

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 'Priority u=/i= pair count, value discarded' is cryptic and does not state a clear verb or resource. It appears to describe counting pairs where 'u' and 'i' are equal, but it is unclear what 'u' and 'i' refer to, what 'priority' means, or what the tool actually does. It does not distinguish itself from the many sibling tools.

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 guidance is provided on when to use this tool versus alternatives. The description does not mention any context, prerequisites, or exclusions. An agent would have no way to know when to select this tool over siblings like 'memory-key-count' or 'search-query-len'.

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