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

No annotations are provided, so the description must carry behavioral disclosure. It adds pay-per-use pricing ('0.1 USDC on Base') which is useful, but it does not mention output format, limitations, side effects, or what 'basic improvements' looks like. With no annotations and no return schema, this is a significant gap.

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 and front-loaded with action, input, and pricing. There is no fluff. It is telegraphic but effective for a simple one-parameter tool, though a fully structured sentence might slightly improve readability.

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 simple one-parameter tool, the essentials are present: what it does, what to provide, and cost. However, it lacks output expectations and any disambiguation from several similar siblings, which makes it minimally viable but not fully complete.

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%, but the schema's parameter description is generic ('service input'). The description adds real meaning by specifying 'input=code,' clarifying that the single parameter expects code. This goes beyond the schema's vague placeholder.

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?

Description states a specific verb+resource: 'explain code + basic improvements.' The 'CONSUMER:' prefix hints at intended audience, and 'input=code' reinforces the scope. It is clear enough though it does not explicitly differentiate from sibling tools like 'code-review' or 'explain.'

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 versus alternatives such as code-review, code-review-security, code-gen, or explain. The description implies usage ('input=code') but provides no context for selection or exclusions.

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