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

Annotations already carry the safety profile (readOnlyHint=false, destructiveHint=false, idempotentHint=false). The description adds one genuinely useful behavioral fact beyond them: 'New products are active immediately.' It does not disclose permissions, duplicate-handling, or what a 'Replo-managed' product constrains.

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?

Two tight sentences with no filler, and the core purpose is front-loaded. It is well-sized for the tool, just light on substance rather than padded.

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 5-parameter creation tool with no output schema and 0% parameter documentation, the description omits far too much: no parameter meaning, no required-field guidance, no indication of what is returned or how failures surface. It covers purpose and activation only.

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 0% across 5 parameters (projectId, title, slug, description, externalCheckoutUrl) and the description names none of them. Unlike the zero-parameter baseline, this tool needs description-side compensation that it does not provide, so the agent gets title/projectId semantics only from the raw schema.

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+resource ('Create a ... product') and qualifies it as 'Replo-managed ... for native product pages or checkout flows', which separates it from get_product/find_products/update_product. It does not name a sibling explicitly, but the create scope is unambiguous.

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 when-to-use or when-not-to-use guidance. It never mentions prerequisites, nor when to prefer update_product or find_products first. Implied usage only — that it is the creation path — with nothing to steer the agent.

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