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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, covering the safety profile. The description adds that the response includes settings (subdomain, domain, logo, metadata), but discloses nothing about not-found behavior, authentication, or other operational traits. With annotation coverage, this is adequate but not rich.

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?

A single sentence that front-loads the operation and resource, then lists notable fields. There is zero redundancy, and every word contributes to the agent's understanding.

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 read-only, idempotent single-getter with one self-describing parameter, rich annotations, and an output schema, the description is fully sufficient. 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 description coverage is 100% and fully documents the only parameter (blogId: string, minLength 1). The description merely restates 'by ID' without adding format, source, or usage details, so the baseline of 3 is appropriate.

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 ('Get') and resource ('a single blog by ID'), and enumerates key return fields (settings like subdomain, domain, logo, metadata). This distinguishes it from list_blogs (multiple blogs) and get_blog_metadata (metadata only), which is clear sibling differentiation.

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?

Makes it clear this tool is for fetching one blog record by ID, implying use when you already have a blogId and need the full record. It does not explicitly name alternatives or exclusion cases, but the 'single blog by ID' framing provides sufficient context versus listing tools.

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