Remove the subscriber from segments.

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

Annotations already declare destructiveHint=true, idempotentHint=false, and readOnlyHint=false, so the safety profile is covered externally. The description adds nothing on top: it never says the removal is irreversible, never explains the 'confirm' flag's intent, and never states auth or account-scoping requirements, which is a notable omission for a destructive 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?

The single sentence is short but is a pure restatement of the title, so it does not earn its place as description content. Brevity here reflects under-specification rather than effective concision.

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 six-parameter destructive tool with nested objects, an alternate body-passing mechanism (payload vs payload_file vs body flags), and no output schema, the description is far too thin. The rich schema and destructive annotation cover some ground, but an agent still gets no explanation of how the redundant segment_ids/payload fields interact or what 'confirm' gates.

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 100%, so the schema already documents all six parameters, including the payload/segment_ids duplication and the payload_file alternative. The description supplies no additional parameter meaning, so the baseline of 3 applies.

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?

Tautological: description restates name/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?

There is no when-to-use guidance, no prerequisites, and no mention of the obvious alternative add_subscriber_to_segments. The agent gets zero routing help beyond what the tool name already implies.

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