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

With no annotations, the description carries the full burden, and it does disclose that this is read-only and that results are live and scoped to the user. That is meaningful context beyond the schema, but it omits auth requirements, pagination, and result shape, so the behavioral picture remains partial.

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?

It is a single sentence, but part of it is wasted: 'Run "Public blog posts"' echoes the tool name, and 'Call it when the user asks for what it provides' adds no information. The useful facts (GET route, read-only, entities read) are buried alongside this 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 zero-parameter, read-only tool with no output schema, the description need not explain return values, and the route plus read-only note cover the essentials. Still, the absence of any real routing guidance against its two siblings leaves a gap for an agent choosing between them.

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?

The tool takes zero parameters, so there is nothing for the description to disambiguate and the baseline is 4. The description correctly does not invent parameters or filters that do not exist.

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 names a specific resource ('Public blog posts'), the HTTP route (GET /public/posts), and the entities it reads (blog-post, blog-category), which is more than a tautology. However, 'Run "Public blog posts"' largely restates the tool name, and it never distinguishes this list endpoint from the singular sibling endpoint-public-post, leaving the agent to infer the plural/singular split.

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 only guidance is 'Call it when the user asks for what it provides,' which is circular and provides no real selection criteria. There is no mention of when NOT to use it or how it relates to endpoint-public-post or endpoint-book-discovery-call, so routing between siblings is left entirely to inference.

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