devto_get_user_profile

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

No annotations are provided, so the description carries the behavioral burden. It does state that the operation is a public read and gives a sense of the return format ('Formatted profile summary including bio, social links, and joined date'). However, it does not disclose what happens when neither username nor user_id is provided, whether both are accepted at once, or how errors are handled, especially since the schema marks both parameters as optional.

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 compact and well organized into Args and Returns sections. It front-loads the purpose and contains no filler, with every sentence contributing useful information.

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 public profile fetch, the description covers the action, both parameters, and the general return contents. An output schema exists, so detailed return fields need not be repeated. The main gaps are the missing explicit requirement/precedence of the two parameters and no mention of devto_get_me for current-user lookups, but these are minor for a read-only lookup.

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 explain parameters, and it does: username is defined as a DEV.to handle with an example, and user_id is explained as the integer alternative. The word 'Alternatively' signals an either/or relationship, though it does not clarify that the schema treats both as optional or define precedence if both are supplied.

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 opens with a specific verb and resource: 'Fetch public profile details and statistics for a DEV.to user.' It clearly identifies the tool's target (public user profile) and distinguishes it from sibling tools like devto_get_me by the word 'public.'

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 implies usage for public user profiles and mentions two parameter alternatives, but it never explicitly states when to use this tool versus alternatives such as devto_get_me for the current user. The 'public' qualifier is the only implicit usage signal.

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