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

Annotations already declare readOnlyHint=true and openWorldHint=false, so safety is covered. The description adds genuine behavioral value beyond that: it discloses what the call returns (details plus reservation status) and includes an explicit injection-safety warning about user-authored text, which is important for a tool that surfaces user content.

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 purpose sentence is front-loaded and compact, and the injection warning is a single tight sentence. Both earn their place, though the warning is somewhat boilerplate relative to the tool's core retrieval function.

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 simple read-only lookup with no output schema, the description covers what is returned and the user-content trust boundary, but omits behavior for invalid or nonexistent gift IDs and any permission/auth context, leaving the definition merely 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?

Schema description coverage is 0%, so the description carries the full burden for the single required gift_id parameter. It only vaguely implies that a gift is identified, adding no format, type, or lookup semantics beyond the bare field name.

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 ('Obține detaliile unui cadou') and adds scope by naming what is included ('inclusiv statusul de rezervare'). This clearly separates it from list-oriented siblings like get_gift_list, though no sibling is named explicitly, which keeps it just short of a 5.

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?

The mention of reservation status implies the intended use case (looking up a gift and whether it is reserved), but there is no explicit when-to-use guidance, prerequisites, or comparison against alternatives such as get_gift_list or extract_gift_metadata. Usage must be inferred.

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