spaces_update_item

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

With no annotations, the description must fully disclose behavioral traits, but it only says 'Update'. It does not explain whether unspecified fields are left unchanged or reset, whether the update is atomic, what happens on invalid input, or what the response contains. For a mutation tool, this is a significant 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?

The description is a single, concise sentence with no wasted words. It is front-loaded and easy to parse, though the extreme brevity may under-serve the tool's complexity. Nonetheless, it is structurally efficient.

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 8 parameters, no output schema, and no annotations. The description only states the basic function, omitting critical context such as merge vs. replace behavior, permissions required, response format, and error conditions. It is not complete enough for an agent to confidently invoke the tool.

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 schema already documents all 8 parameters with meaningful descriptions (e.g., 'New title', 'New status'), so the description does not need to add parameter details. It provides no extra parameter semantics beyond the schema, but given the high coverage, the baseline 3 is appropriate.

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 clearly states the action ('Update') and the resource ('an existing Spaces item'), which directly distinguishes it from sibling tools like spaces_add_item (create) and spaces_search (query). It is specific and unambiguous.

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 word 'existing' implies a key usage constraint—only for items already present—but the description does not explicitly contrast with alternatives or state when not to use it. The distinction from spaces_add_item is implicit rather than explicit, so it earns only a mid-range score.

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