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

Annotations already declare readOnlyHint and openWorldHint, so the safety profile is covered. The description adds genuinely useful behavior beyond that: data is fetched live rather than cached, no account is required, and the return includes the text plus a link. It stops short of describing pagination or size limits of the returned text.

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?

The purpose is front-loaded, but the body is a single sprawling sentence enumerating nine topics with semicolons, which is dense and hard to scan. The content is largely justified for topic selection, but the structure could be a list rather than one run-on line.

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-enum-parameter, read-only tool with no output schema, the description supplies everything needed: what is returned (page text plus link), freshness guarantees, and no-auth requirement. Nothing an agent needs to call it correctly is missing.

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 enum is structurally complete, so the baseline is met. The description goes further by explaining the content behind each enum value (e.g. 'refund' covers when a refund applies, the time limit, and how to ask), which meaningfully improves topic selection beyond the schema's terse 'Which page to read.'

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 (reads) and resource (CMeIn's own information pages) and enumerates exactly what each topic contains, so the agent knows what it will get. It falls short of a 5 because it never distinguishes itself from siblings like cmein_pricing or see_examples, which appear to overlap with the 'pricing' and 'examples' topics.

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 rather than stated: the 'read live at request time, so terms, policies and open roles are current rather than remembered' line hints at when freshness matters. There is no explicit when-to-use versus cmein_pricing/see_examples, and no when-not guidance, leaving the agent to infer the choice.

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