patch_me_item_by_id_bookmark

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

Annotations already communicate that this is a write operation, non-destructive, and idempotent, so the description does not need to repeat those facts. It adds a useful note that body fields must be discovered via GET or /schema, but it does not disclose partial-update semantics or what happens to existing bookmark fields.

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 short, front-loaded with the purpose, and contains no filler. The route and argument notes each earn their 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 description, annotations, and output schema together make the tool callable, but the id parameter remains semantically vague and the create-versus-update choice is not addressed. These are notable gaps for an agent selecting and invoking the tool correctly.

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 0% schema description coverage, the description compensates by identifying id as a path parameter and by steering the agent to the GET or /schema endpoint for the expected body fields. This is meaningful guidance for a body schema that is otherwise an opaque object with additionalProperties allowed.

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 clear action ('Update') and resource ('item bookmark'), and the PATCH route reinforces this. It is distinguishable from siblings like create_me_item_by_id_bookmark and delete_me_item_by_id_bookmark_by_time, though it could more explicitly describe whose bookmark and which item it targets.

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 on when to use this tool instead of create_me_item_by_id_bookmark or delete_me_item_by_id_bookmark_by_time. The instruction to read the matching GET or /schema endpoint is a prerequisite, not a tool-selection rule.

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