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

Annotations already declare idempotentHint=true, destructiveHint=false, and readOnlyHint=false, so the safety profile is covered. The description adds genuinely new behavior: partial-update semantics ('Only the fields given change') and a confirmation requirement ('Confirm first'). It stops short of stating what happens with an invalid tracking_key or whether unset channels persist.

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 with zero filler. The core mutation action is front-loaded, the alternative is second, and the constraint ('Only the fields given change', 'Confirm first') closes it out.

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?

With an output schema present the description needn't explain returns, and annotations carry the safety profile. It covers mutation semantics, confirmation, and the sibling alternative, leaving only edge cases (invalid key handling, pause vs. stop_tracking_seats) uncovered.

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 coverage is 100% and each parameter is well documented, so the baseline is 3. The description adds a small amount beyond the schema by grouping text/email as 'channels' and stating the overall partial-update contract, which is not stated anywhere in the per-parameter descriptions.

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?

Names a specific verb set (pause, resume, change) on a specific resource (seat alert) and enumerates the mutable aspects (seats-together rule, channels). It also explicitly distinguishes itself from the sibling track_seats, telling the agent that watching different seats is a different tool's job.

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 and condition: 'To watch different seats call track_seats again (it adds to the alert).' It also flags a prerequisite action ('Confirm first'). It does not, however, address when to use this versus the sibling stop_tracking_seats, so pausing versus deleting an alert is left to inference.

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