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 value by enumerating the returned comparison dimensions and the top-pick-vs-alternative distinction from job guides, but says nothing about batching cost, missing slugs, or error behavior for unknown slugs.

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?

Single sentence with the verb and constraint front-loaded and no filler. The parenthetical enumerations of dimensions and slug examples are dense but each element carries information an agent needs.

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?

No output schema exists, so the description must cover returns, and it does name the compared fields and the job-guide recommendation role. It stops short of describing result ordering or shape (e.g., per-tool objects), which would fully close the gap for a comparison endpoint.

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% and the schema already carries minItems/maxItems and the slug provenance note, so the description operates at baseline. The embedded example array adds a concrete illustration of slug format, but no additional syntax or validation meaning beyond the schema.

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 (Compare) and resource (Coghelm tools) plus the exact input form (2-6 slugs) and the comparison dimensions returned (category, description, free-plan flag, enterprise focus, job-guide recommendations). This clearly distinguishes it from siblings like get_tool (single lookup), search_tools (discovery), and recommend_tools (ranking).

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 implied by the name and the 'compare' framing, and the schema notes slugs come from search_tools or get_tool, which hints at a workflow. However, the description never states when to choose this over recommend_tools or fetch several get_tool calls, and gives no exclusions or prerequisites.

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