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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so safety is covered. The description adds one piece of behavior beyond that: the response also reveals plan-allowed changes, not just current appearance. It says nothing about authorization or failure modes, so the added value is modest.

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, prerequisite front-loaded, then purpose with concrete field examples. No filler, though the parenthetical-first ordering slightly buries the primary action.

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 no output schema, the description usefully previews what comes back (display name, colors, tagline, logo, plus plan-allowed changes), which is exactly what an agent needs before calling. Only the plan-entitlement portion is left vague.

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 the single parameter is already documented as 'the workspace_key returned by create_workspace'. The description restates that same origin rather than adding format or validation detail, so the schema does the heavy lifting and baseline 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?

The description names a specific verb ('Read') and resource ('the back office' branding) and enumerates the fields returned (display name, colors, tagline, logo). It is clearly distinguishable from update_branding/reset_branding by its read framing, though no sibling is named explicitly.

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?

It supplies a real precondition ('Needs the workspace_key from create_workspace'), which is genuine usage guidance, and the phrase 'what the plan allows to change' implies reading before editing. However it never states when to use update_branding instead, nor any exclusion.

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