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

With no annotations, the description carries full behavioral burden. It usefully discloses that only 'approved' listings are returned (a meaningful access constraint) and enumerates two returned fields plus one excluded field. It doesn't state what happens for unapproved/nonexistent slugs or any error behavior, so it adds real but partial behavioral context.

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?

Two tight sentences with the fetch scope front-loaded and the field-level caveats following. Every clause earns its place.

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 single-parameter read with no annotations, the description is adequate on success-case field visibility but silent on error/missing-record behavior and on the relationship to sibling tools, leaving gaps an agent would have to probe.

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% and the single slug parameter is already documented in the schema, so the description adds nothing new about the parameter. Baseline 3 is warranted.

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 (Fetch) and resource (listing) scoped to 'approved' and identified by URL slug. It's clearly a single-record lookup versus the sibling search_founders, though the differentiation is left implicit rather than naming the sibling.

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 implies this is a retrieve-by-slug operation, which implies 'use when you already have a slug', but never explicitly states when to use this versus search_founders or what to do if the slug is unknown.

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