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 hints at discard behavior ('line discarded') but fails to describe what 'LEEF attr count' means, what is returned, whether it mutates state, or any constraints. One cryptic phrase is insufficient behavioral disclosure.

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?

Extremely short, but brevity here reflects under-specification, not conciseness. Two fragments offer no front-loaded purpose, making it unusable as a tool definition.

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 9-parameter tool with no annotations and no output schema, the description is wholly inadequate. It does not explain what LEEF means, how attributes are counted, or how the discard behavior interacts with each parameter type.

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 each of the 9 parameters is documented in the schema itself. The description provides no additional parameter meaning. With full schema coverage, baseline 3 is appropriate, though the description adds nothing.

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 'LEEF attr count, line discarded' is not a clear statement of purpose. It does not identify a verb+resource nor connect to the 'leef-ok' tool name in any meaningful way. An agent cannot determine what this tool does.

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 on when to use this tool, when not to use it, or which sibling alternatives exist. Given the crowded sibling list with clearly named shape/count/check tools, routing guidance is essential and entirely absent.

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