content_snapshot

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

Annotations already declare readOnlyHint=true, and the description's '读取' (read) is consistent with that. The description adds that the tool returns fixed config plus complete unit descriptions, which is useful context, but it does not disclose error behavior or what happens when the snapshot is unavailable. No contradiction with annotations.

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 sentence with no filler and the key subject is front-loaded. It is concise, though it sacrifices parameter and usage clarification for brevity.

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?

Given the simple one-parameter schema, output schema, and read-only annotations, the definition is not heavily burdened, but it still omits id semantics and use-case selection. An agent can only call this tool correctly if it already knows what identifier to supply and when this snapshot read is appropriate.

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 has one required string 'id' with no description and 0% schema description coverage. The tool description does not explicitly define what id refers to or how to obtain it, although the phrase ContentReadResult.snapshot indirectly suggests it is a snapshot identifier. This is insufficient for reliable invocation without prior domain knowledge.

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 operation: reading the fixed configuration and complete unit description associated with ContentReadResult.snapshot. This is more informative than a tautology, though it does not explicitly differentiate from sibling tools like content_read or content_continue.

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 guidance on when to use this tool versus alternatives such as content_read, content_open, or content_continue, and no stated prerequisites or exclusion conditions. The reference to ContentReadResult.snapshot hints at context, but the trigger for selecting this tool is left implicit.

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