update_region

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

With no annotations, the description carries the full burden of behavioral disclosure. It states that content is updated but does not explain whether the update is partial or full, whether unspecified fields are preserved, what validation applies to arbitrary fields, or what side effects occur. This is a significant gap for a mutation tool.

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 a single front-loaded sentence with no filler. The list of updatable content types is useful, though it is somewhat long; still, it earns its place by conveying the tool's scope.

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 mutation tool with no annotations, arbitrary nested fields, and zero parameter descriptions, this is under-specified. The presence of an output schema reduces the need to describe return values, but the description still omits usage conditions, field semantics, and behavioral guarantees.

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 0%, so the description must compensate for the schema's lack of parameter documentation. It adds some meaning by listing possible keys inside 'fields', but it does not explain screen_id, region_id, or the semantics of the fields object. The description only partially fills the documentation gap.

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 uses a specific verb and resource: 'Update region content', and enumerates representative field names such as value, label, items, status, icon, unit, size, and invert. This makes the tool's purpose reasonably clear, though it does not explicitly differentiate it from siblings like upsert_screen or push_updates.

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?

No guidance is given about when to use this tool versus alternatives such as push_updates or upsert_screen. The word 'update' implies a use case, but there are no stated conditions, prerequisites, or exclusions.

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