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

Annotations already indicate readOnlyHint=false, destructiveHint=false, idempotentHint=false, and openWorldHint=true. The description adds that a key is needed and that the channel is identified by id, but it does not disclose what 'removing' entails (e.g., whether it is reversible, whether it affects notifications immediately, or what happens if the id does not exist). 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?

The description is two sentences with no wasted words. The core action and the prerequisite (key) are stated efficiently. The link to docs is a minor addition but useful.

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 single-parameter tool with no output schema, the description covers the essential action and the source for the id. However, it lacks details about the effect of removal, error cases, or whether the operation is reversible. Given the annotations provide some context (not read-only, not idempotent, not destructive), the description is adequate but not complete.

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 compensate. It explains that 'id' is the notify channel id and points to list_channels for obtaining it, which adds meaning beyond the schema's bare integer type. However, it does not specify the id format beyond the schema's minimum:1 constraint, and there is only one parameter, so the compensation is partial.

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 states a specific verb ('Removes') and resource ('notify channel by its id'), and references list_channels for finding the id. It is clear what the tool does, though it doesn't explicitly distinguish it from sibling tools beyond the reference to list_channels.

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 context: you need the id from list_channels and a key from the docs. It does not explicitly state when to use this tool versus alternatives, but the reference to list_channels provides some routing guidance. No exclusions or alternative tool names are given.

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