get_bookmarks

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

There are no annotations, so the description bears the full burden of disclosing behavior. It mentions one useful property (works with no tabs open) but does not explicitly state that this is a read-only operation with no side effects, nor does it describe behavior around the optional session_id or failure modes.

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 two short, dense sentences with no filler. The core purpose is front-loaded, and the extra tab-context sentence earns its place by clarifying availability.

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 simple getter with an output schema, the description is minimally viable: it states the return object and an availability condition. However, it omits any clarification of session_id semantics and does not explicitly state the tool is read-only, leaving minor but real gaps for an agent to resolve.

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%, and the description does not mention the session_id parameter at all. The name 'session_id' is somewhat self-explanatory, but the description adds no meaning about whether it is required, what it selects, or how it affects the returned bookmark tree.

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 tool's action ('Return') and resource ('the browser bookmark tree'). This is easily distinguished from sibling tools like create_bookmark and remove_bookmark, which mutate bookmarks rather than read them. The additional note about working with no tabs open reinforces the scope.

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?

'Works with no tabs open' implies the tool can be used independently of tab state, which provides some usage context. However, it does not explicitly state when to prefer this tool over alternatives, nor does it mention any exclusions or prerequisites beyond the tab note.

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