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

Annotations already declare destructiveHint=true and readOnlyHint=false, and the description adds the key operational detail that it 'Overwrites the previous settings' – clarifying that this is a replacement rather than a merge. It stops short of saying which fields are optional or whether omissions clear existing values.

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?

Two tight sentences with the core action front-loaded and the destructive caveat second. No filler, though the brevity contributes to the parameter gaps.

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 5-parameter mutation with no annotations beyond safety hints and no output schema, the description is too thin: it omits the status/delivery parameters, doesn't clarify partial-update semantics, and gives no success/error behavior.

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 carry the burden, yet it only gestures at three concepts ('name, targets or digest settings') against five parameters. The status enum ('active'/'paused'), the delivery enum ('email'/'dashboard'), and the required follow_id are all left unexplained.

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 (Change) and resource (a followed topic) plus the affected fields (name, targets, digest settings). It reads clearly against siblings like follow_topic and unfollow_topic, though it doesn't explicitly differentiate itself from them.

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 when-to-use guidance, no mention of prerequisites, and no indication of how to obtain the required follow_id (e.g., via list_followed_topics). The sibling list is the only hint that this is the edit counterpart to follow_topic.

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