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

Annotations already declare readOnlyHint, idempotentHint, and openWorldHint=false, so the safety profile is covered. The description adds useful context – output format is Markdown, content is sourced from wizcomltd.com, and slugs must match specific page slugs – but says nothing about caching, freshness, or failure behavior when a slug is invalid. With annotations carrying safety, this is a modest but real addition.

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 front-loaded sentence plus a compact topic inventory; every clause (Markdown format, source domain, topic meanings, slug requirement) earns its place with no filler.

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 two-parameter, read-only content fetch with no output schema, this covers what the agent needs: what each topic returns, when a slug is required, and the output format. Only minor gaps remain (no output-schema, no error/invalid-slug behavior), which is acceptable given the annotations.

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 50%: the topic enum is documented in the schema, and slug has a description there too. The description adds meaning beyond that by tying slug to two different topic contexts and giving examples ('troy', 'macomb-county'), which the schema only partially covers for the location case.

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 ('Get information about Wizcom Limited ... as Markdown from wizcomltd.com') and enumerates exactly what each topic returns, so the agent knows precisely what it will get. Sibling tools are unrelated (insurance readiness, downtime cost, AI visibility), so no explicit differentiation is needed, but none is offered either.

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 topic list effectively tells the agent which topic to pick for which need (e.g. 'service (one service: pass slug)' vs 'services (list)'), and gives the exact condition for supplying a slug. It stops short of stating when not to use the tool or naming alternatives.

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