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

Annotations already declare the safety profile (readOnly=false, destructive=false, openWorld=true, idempotent=false), so the bar is lower. The description adds the 'to track' intent, but it does not explain the required idempotency_key, how duplicate handles are handled, or what happens to an existing creator on re-registration. No contradiction with annotations.

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 front-loaded sentence with no filler or repetition. It is efficient, though arguably too sparse for an 8-parameter mutation tool.

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 an 8-parameter, 3-required create tool with low schema coverage and no output schema, the description is too thin. It omits idempotency semantics, workspace scoping, and the optional brand_id/display_name fields an agent would need to populate a correct call.

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 only 38% across 8 parameters, so the description must compensate but does not. It implicitly covers only handle and platform, leaving brand_id, display_name, idempotency_key, workspace_id, body, and query unexplained in prose.

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?

States a specific verb (register) and resource (creator handle) scoped to a platform, which is more informative than the title 'Add Creator'. However, it does not distinguish itself from the adjacent sibling aidelly_add_competitor, which follows the same 'register a tracked entity' pattern, so an agent could confuse the two.

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 when-to-use guidance, no prerequisites, and no mention of alternatives such as aidelly_list_creators or aidelly_add_competitor. The requirement that workspace_id is needed for create operations is left entirely to the schema and never surfaced here.

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