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

Annotations already declare readOnlyHint, idempotentHint, non-destructive and openWorldHint=false, so the safety profile is covered. The description adds that results are cited back to source pages and that special-class product types trigger extra steps, which is useful output context, but it says nothing about unsupported markets or error behavior given the closed-world annotation.

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 dense sentence, front-loaded with the core payload and no filler. The em-dash parentheticals are slightly heavy but every clause adds content rather than restating the name.

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?

With an output schema present, return values need not be enumerated, yet the description summarizes them accurately; annotations cover the safety profile. The main gap is which markets are in scope, relevant given openWorldHint=false, but overall it is sufficient for correct invocation.

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%, so the description must carry the load. It meaningfully explains 'market' as the sale jurisdiction and clarifies that 'product_type' is optional and only changes the answer for products in a special class (novel food, organic, supplements), which is real semantic value beyond the bare 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?

The description states a specific verb+resource (get notification requirements) and unpacks exactly what the response contains: registration/import notification scheme, food business operator of record, and special-class extra steps. This is clearly distinguishable from siblings like get_label_and_claims or get_market_status, though no sibling is named explicitly.

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 implied by the framing ('what must be filed before sale in a market'), which tells the agent this is a pre-market-entry compliance lookup. However, there is no explicit when-to-use, when-not-to-use, or reference to an alternative tool for adjacent questions (e.g., enforcement or market status).

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