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

No annotations are provided, so the description must carry the burden. It discloses that the post is 'public' (accessibility) and that the return is a 'summary' (output type), but it does not mention side effects, error behavior, or authentication requirements. Some behavioral context is present, but not comprehensive.

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 description is a single, direct sentence with no filler. It front-loads the action ('Get') and immediately conveys the resource and method, making it highly efficient.

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 tool with one parameter, no annotations, and no output schema, the description covers the core purpose and method. It could mention what happens if the slug does not exist or what the summary includes, but the simplicity of the tool makes this largely adequate.

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 input schema already documents the slug parameter with 100% coverage ('Blog slug.'). The description's 'by slug' adds no new meaning about the parameter itself; the terms 'public' and 'summary' relate to the overall tool's purpose, not the slug semantics.

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 uses the specific verb 'Get' and clearly identifies the resource as a 'public blog post summary' retrieved 'by slug.' This distinguishes it from siblings like list_blog_posts (plural, listing) and get_guide (different resource).

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?

No explicit guidance about when to use this tool versus alternatives is provided. The focus on a single summary by slug implies it is for retrieving one post rather than listing all, but alternative tools are not mentioned and no exclusions are stated.

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