get_user_profile

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

No annotations exist, so the description carries the burden; 'public profile' implies read-only, side-effect-free behavior, which is useful but only implicit. It says nothing about rate limits, handling of suspended/deleted/private accounts, or what happens with an unknown username.

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 tight sentence, front-loaded with the verb and resource, with the returned fields as a compact trailing clause. Nothing is wasted.

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 no output schema, the description partially covers the return shape (karma, account age, badges) but does not claim to be exhaustive. Missing edge-case behavior and username format leave modest gaps for a one-parameter read tool.

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 single required parameter has 0% schema description coverage and the description never mentions it. Format questions an agent would ask — whether to pass 'u/name' or bare 'name', and case sensitivity — are left entirely unanswered.

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?

Specific verb+resource ('Get a Reddit user's public profile') with a preview of the payload (karma, account age, badges). It does not distinguish itself from the sibling get_my_profile, so an agent gets no help choosing between the two beyond the word 'user'.

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 indication of when to use this versus get_my_profile, get_user_posts, or get_user_comments. There is no prerequisite or exclusion stated, so the agent must infer routing from the name alone.

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