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

Annotations already declare readOnly, idempotent, non-destructive, and closed-world behavior, so the bar is lower. The description adds that results include industry, stage, and a one-line description, and 'on jensing.com' is consistent with openWorldHint=false. It says nothing about result volume, ordering, or whether the whole set is returned in one call — notable gaps for a list tool with no pagination parameter.

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 well-formed sentence with the resource and scope front-loaded and no wasted words. It is arguably too terse rather than bloated, but structurally clean.

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 two-parameter read-only list tool with full schema coverage and no output schema, the description covers the resource, scope, and the shape of returned records. Missing details about ordering and result-set size are minor rather than blocking.

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 both parameters are already documented; baseline 3 applies. The description's mention of 'industry' is ambiguous — it reads as a returned field rather than clarifying the industry filter — and the language parameter is not referenced at all.

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 gives a specific verb and resource ("List the companies") and scopes it to jensing.com, plus hints at the returned fields. It does not explicitly distinguish itself from the sibling get_company, which returns a single company, so differentiation is left to inference.

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?

Usage is only implied: 'List' signals a full enumeration versus get_company for one record, but the description never states when to use this instead of get_company or search_knowledge. No prerequisites or exclusions are given.

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