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

The annotations already flag this as destructive and not read-only. The description adds important behavior beyond that: each passed field replaces existing content, omitted fields are kept, an empty string clears a field, values are stored as given with no AI transformation, and the change applies to the workspace chosen via select_workspace with the reply naming it.

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 description is front-loaded with the core action and then layers in usage triggers, field replacement semantics, workspace scoping, and the sibling alternative. Every sentence carries useful information, though it is somewhat longer than strictly necessary for a two-field update tool.

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?

There is no output schema, but the description explains what the tool changes, how omitted and empty fields behave, which workspace is affected, that values are stored verbatim, and where to go for a related but different need. An agent has everything required to call it correctly.

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%, so the schema already defines both parameters and their 2000-character limits. The description adds genuinely useful semantics the schema does not convey: omission preserves the existing value and an empty string explicitly clears it. It stops short of explaining format expectations beyond that, but the added replacement semantics are substantive.

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 (change the active workspace's brand identity) and names the exact fields affected, positioning and ICP. It also distinguishes itself from the sibling update_voice by pointing to that tool for personal writing style.

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 explicit trigger scenarios with an example user utterance ('our audience is now CFOs, not founders') and names the alternative tool (update_voice) with the condition that selects it. The agent knows when to use this versus a sibling without needing to infer.

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