get_web_ui_url

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

No annotations are provided, so the description carries the full disclosure burden. It reveals the GUI-mode precondition but does not say what happens when GUI mode is off (error, null, empty string), nor whether any auth or state is required. For a simple read-only getter this is a moderate but real gap.

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, front-loaded sentence with no filler. The resource ('local Web UI URL for this Orb') is stated before the conditional clause, which is the right ordering.

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 zero-argument getter with no output schema, the description covers the essential facts: what it returns and the condition under which it is meaningful. The remaining gap is the unspecified behavior when GUI mode is disabled, which is minor for a tool this simple.

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?

The tool takes zero parameters, so the schema has nothing to document and there is no parameter semantics burden on the description. Baseline of 4 applies for a parameterless tool.

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 states a specific verb and resource: 'Get the local Web UI URL for this Orb'. It is unambiguous about what is returned. The only sibling, search_knowledge, is unrelated, so no explicit differentiation is needed.

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 phrase 'when GUI mode is enabled' gives an implied precondition for calling the tool, which is useful context. However, it never states what to do if GUI mode is disabled or what alternatives exist, leaving usage guidance partial.

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