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

Annotations already declare readOnlyHint=false, destructiveHint=false and idempotentHint=false, so the description's burden is lower. It usefully discloses one behavior beyond the annotations – that already-scheduled posts retain their times – but says nothing about irreversibility, permissions, or whether the slot id becomes invalid for reuse.

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 short sentences, front-loaded with the action and followed by the one side effect that matters. No filler.

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 simple one-parameter delete tool the description covers the key non-obvious side effect (scheduled posts unaffected), but with 0% parameter coverage and no output schema it leaves the agent without the slot id's origin or the post-delete state.

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% and the single parameter slotId has no description in either place. The description never says what a slot id is or where to obtain it (presumably list_slots), so it does not compensate for the coverage gap.

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 and resource ('Removes one recurring opening') and thereby distinguishes itself from create_slots, list_slots, and next_available_slot. Minor weakness: it says 'recurring opening' rather than 'slot', so the resource name only appears in the title.

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?

Usage is implied by the verb+resource but there is no explicit when/when-not guidance, no mention of delete_schedule vs delete_slot, and no prerequisite or confirmation guidance for a removal operation.

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