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

The annotations already declare destructiveHint=true, so the deletion risk is covered by structured data. The description adds value beyond them by disclosing recoverability — "The person can undo it in the app" — which materially affects whether an agent should confirm first. It does not explain what happens on a stale/mismatched version, which is a notable residual gap for a versioned destructive call.

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 short sentences, front-loaded with the core action, then the alternative, then the undo note. No filler, no restatement of the title, and every sentence carries distinct information.

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 two-parameter delete with a full annotation profile and no output schema, the description covers action, scope, alternative, and recoverability. The only meaningful omission is the meaning and failure behavior of the required version parameter.

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 parameter meaning, and it does not. It names "id and version" but never says what the version represents (likely the current version for conflict detection), where the agent obtains it, or what a mismatch produces. Both parameters remain semantically opaque.

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?

Uses a specific verb and resource: "Removes one reminder, given its id and version." The singular-scope wording makes clear it deletes exactly one reminder, and the alternative (set_reminder with on false) implicitly delimits it from pausing behavior. It does not explicitly distinguish itself from other delete_* siblings, but the resource is unambiguous.

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?

Gives an explicit alternative with the condition that selects it: "To stop it for a while instead, set_reminder with on false." That is concrete routing guidance for the main ambiguity an agent would face. It stops short of stating prerequisites (e.g., needing a fresh version), so not a 5.

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