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

Annotations already declare readOnlyHint=true and openWorldHint=true, covering the safety profile. The description adds only the word 'normalized' and clarifies results are limited to public profiles, but says nothing about pagination, ordering, or behavior when a profile has an enormous follower count despite the limit/offset parameters.

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?

One tight sentence with no filler; the resource is front-loaded and nothing is wasted. It is concise to the point of underspecifying, but the structure itself is clean.

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?

An output schema exists, so return value shape need not be explained, and all five parameters are fully documented. For a read-only list endpoint with both annotations and output schema, the definition is nearly complete, missing only pagination expectations.

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 100%, so username/uri/url alternates, the limit clamp of 1-200, and the offset default are already documented. The description contributes no additional parameter meaning, which matches the baseline for a fully-documented schema.

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 ('Returns') and resource ('normalized public follower profiles from a Spotify profile'), so the agent knows it fetches a profile's follower list. It does not, however, distinguish itself from nearby siblings like spotify_profile_playlists or spotify_profiles_search.

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 offers no when-to-use or when-not-to-use guidance and names no alternative. The agent must infer that this is the tool for enumerating followers of one specific profile rather than searching profiles.

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