Create a Nuvio profile

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

Annotations already declare readOnlyHint=false, destructiveHint=false, so the description doesn't contradict them but adds useful behavioral context: 'The previous state is snapshotted before the write; revert with nuvio_undo.' This goes beyond annotations by explaining the snapshoting behavior and the undo path, which is valuable for an agent understanding side effects and recovery options.

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?

Three sentences with key constraints front-loaded: the main action, the limits, and the undo option. No fluff, but it could be more concise by merging the second and third sentences. Overall efficient and informative.

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?

Given the tool is a creation operation with 6 parametersley no output schema, the description covers the core behavior, limits, and undo path. It lacks details on return values (e.g., created profile object) and edge cases like what happens when max profiles reached, but those might be inferred from the limits. Adequate for a relatively simple creation operation.

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 coverage is 50%, with some parameters having descriptions (avatar_id, profile_index, uses_primary_addons) but others lacking (name, avatar_url, avatar_color_hex). The description references 'profile 1 is primary' which sheds light on profile_index semantics, but it does not fully compensate for the missing parameter details — e.g., it doesn't clarify avatar_url vs avatar_color_hex precedence or validation rules beyond the schema pattern.

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 adds a new profile while preserving existing ones, and differentiates it from siblings like nuvio_update_profile and nuvio_delete_profile by specifying 'add' and 'preserving every existing one'. The title reinforces the resource, but the description adds specific scope (max 6, primary profile) that distinguishes it.

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 clear context (max 6 profiles, profile 1 is primary) and mentions an alternative for revert (nuvio_undo), but does not explicitly contrast with sibling tools like nuvio_update_profile or nuvio_copy_profile_setup. It effectively tells the agent when to use it (adding a new profile) but not when not to use alternatives.

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