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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds useful context by disclosing the return shape (title, URL, short description) and that only 'published' studies are returned. It says nothing about result limits or pagination behavior.

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?

A single front-loaded sentence that first states the action and scope, then the returns, then the optional filter. The four keyword examples are slightly more than strictly needed, but nothing is wasted.

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?

With no output schema, the description correctly covers return values (title, URL, short description) and the two parameters for this simple read tool. It does not mention result counts, pagination, or what an empty filter returns, which would round it out.

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 baseline is 3, but the description goes beyond the schema's generic 'Optional keyword to filter by' by giving concrete example keywords that show what kind of filter values actually work. It adds no detail on the language enum, which the schema already documents.

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 ('List') and resource ('Order Group's published case studies') and enumerates the returned fields. The sibling tool submit_project_enquiry is a write action, so the read-only listing scope is unambiguous without opening either schema.

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?

'Optionally filtered by a keyword' implies when the filter parameter is useful, and the four example keywords ('fintech', 'energy', 'IoT', 'mobile') suggest the domain of valid queries. However, there is no explicit when-to-use or when-not-to-use guidance, and no mention of how this relates to the sibling tool.

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