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

The annotations already declare destructiveHint=true, readOnlyHint=false, idempotentHint=false, and openWorldHint=true, so calling it a 'destructive write operation' is redundant. 'Accepts API-supported batch payloads' is vague and adds nothing about failure modes, partial-batch behavior, or payload limits, which would be genuinely useful for a batch mutation.

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 compact sentences with the operation and limitation front-loaded, no filler. It is efficient, though the 'Limitations' sentence is partly redundant with annotations.

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?

A 7-parameter destructive batch mutation with no output schema needs more: what the batch payload looks like, whether partial success is possible, and how confirm interacts with the write. The description leaves an agent under-informed for a high-risk operation.

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 86%, so most parameters are self-documenting and the baseline of 3 applies. The description adds no syntax or shape detail for the loosely-typed 'events' anyOf (array or string) or for the required confirm flag.

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 (updates) and resource (time entries) with batch scope, and names the endpoint. It is distinguishable from the singular update_event and from create_events_batch/delete_events_batch, though it does not explicitly contrast with 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?

The description never says when to use batch update versus update_event for a single entry, nor what prerequisites apply beyond the schema's confirm flag. 'Using /events/batch/update' is a mechanism note, not usage guidance.

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