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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so safety is covered. The description adds genuine behavioral value beyond that: the result reflects both the workspace preference and what forms actually render on its plan, flagging a plan-dependent outcome an agent would not otherwise know.

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?

A single tight fragment with no padding, front-loading the resource and the plan-dependent nuance. It is slightly terse and grammatically a fragment rather than a complete sentence, but every word earns its place.

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?

The tool has no parameters and an output schema, so the description need not explain return values or inputs. It covers the resource and the notable plan-dependent behavior; only routing guidance versus fillo_set_branding is missing.

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?

With zero parameters and vacuous 100% schema coverage, there is nothing for the description to clarify; baseline 4 applies. The description correctly omits parameter talk.

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 the specific resource (the workspace's badge preference) and adds scope about what forms render on the plan, so an agent knows this is a read of branding state rather than a mutation. It does not explicitly name its write sibling fillo_set_branding, but the read intent is clear from title and text.

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 statement of when to call this versus fillo_set_branding or other settings tools, and no prerequisites or context cues. The agent must infer usage entirely from the name and title.

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