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

Annotations already declare readOnlyHint=true, openWorldHint=true, and destructiveHint=false, so the safety profile is covered. The description adds useful behavioral scope with 'direct relationship neighbors,' indicating non-transitive traversal, but does not disclose depth limits, pagination, or response shape.

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 description is one efficiently worded sentence with no filler and the key action front-loaded. It could be slightly more informative for a graph traversal operation, but it avoids waste.

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 graph traversal tool with no output schema and 0% parameter description coverage, the single sentence is insufficient. It omits parameter semantics, entity-type constraints, and any indication of what the neighbor results contain.

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% for the two required parameters, yet the description never mentions slug or entity_type. It provides no meaning, format, or enum context beyond what the bare schema already shows, so it fails to compensate for the coverage gap.

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 (Retrieve) and resource (direct relationship neighbors for an entity), which is clear and more specific than a generic get. It does not explicitly differentiate itself from siblings like get_entity or get_producer, so it falls 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 description gives no explicit when-to-use guidance, prerequisites, or alternatives. It only implies the tool is for looking up graph neighbors of an entity, leaving selection among the many sibling get/list/search tools to inference.

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