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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, so safety is covered. The description adds the accent-insensitive filtering behavior, which is useful beyond annotations, but doesn't disclose anything else like return format or pagination.

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?

One sentence with no waste, front-loading the resource and data source, then adding the filter detail. Perfectly concise for a tool with a single optional parameter.

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?

Given a single optional parameter, full schema coverage, and annotations that already describe the safety profile, the description is complete enough. It covers the resource, data source, and filter behavior, leaving nothing critical missing for a simple lookup tool.

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 the schema already documents the 'profile' parameter as a substring filter. The description adds 'accent-insensitive' detail, but the core semantics are in the schema. Baseline 3 is appropriate.

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: 'Reference freelance day rates (Free-Work)', with an optional filter on profile. It names the data source (Free-Work) which helps distinguish from sibling pricing tools, but doesn't explicitly contrast with siblings.

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 description mentions 'optional accent-insensitive profile filter' which implies usage for filtering by profile, but doesn't explicitly state when to use this vs alternatives. Since it's a reference tool among pricing tools, context is implied but not explicit.

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