get_member_profile

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

With no annotations provided, the description must carry the full burden of behavioral disclosure. The verb 'Retrieves' implies a read-only operation, and the description lists the returned data, but it does not explicitly state side effects, error behavior (e.g., member not found), or any rate limits or authorization requirements. This is acceptable for a simple lookup but not fully transparent.

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 two sentences: the first fronts the core action and data scope, the second the usage context. It is concise, free of filler, and every word earns 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?

The tool is simple—one parameter, no output schema, no annotations. The description adequately covers the purpose, the returned data fields, and the canonical use case. For such a low-complexity tool, this is complete enough for an AI agent to select and invoke correctly.

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?

The input schema provides 100% description coverage for the sole parameter, memberId, including its type and an example format. The description adds no additional parameter-specific semantics, so it does not go beyond what the schema already provides. The score is at the baseline of 3.

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 clearly states the tool's function using the verb 'Retrieves' and specifies the resource ('a member profile') and key data fields (loyalty tier, partner, travel history). It strongly differentiates from siblings: get_recommendations focuses on recommendations, and list_members lists members, while this tool retrieves a single member's profile.

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 explicitly recommends when to use the tool: 'Use this to understand who the member is before making recommendations.' This provides clear contextual guidance. It does not, however, explicitly mention when not to use it or name alternative tools, leaving room for a more thorough comparison.

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