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

Annotations already declare readOnlyHint=true and destructiveHint=false, so safety is covered. The description adds genuinely useful context – that unpublished and pending reviews are returned too, and that merchant PII (name, email, Shopify customer and order ids) is included – but says nothing about behavior for an unknown id or about moderation-specific fields.

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?

Front-loaded with the resource and scope, followed by the payload note. The raw endpoint string "GET /api/v1/store/{id}/product-reviews/{reviewId}" is mostly redundant for an agent and is the one part that does not earn its place.

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 one-parameter read tool with annotations and no output schema, the description covers what is fetched, what moderation states are visible, and which fields come back. Only edge-case behavior (not found, permissions) is left out, which is a minor gap.

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 single parameter already carries a pattern and a note that the id comes from a list tool, so the description adds only the reminder that any moderation status is accepted. Baseline 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 and resource ("One product review by id") plus an important scope qualifier ("any moderation status"), which lets an agent distinguish it from the list/summary siblings without opening a schema.

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 only implied: it's clear this is the single-record fetch taken after a list call, and the schema even says the id comes from a list tool, but the description itself never names an alternative or states when not to use it (e.g., use loox_list_product_reviews to find ids).

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