Get one annotation

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

No annotations are provided, so the description carries the full burden. It usefully discloses the return payload ('full details and screenshot'), which is real value for a tool with no output schema, but says nothing about permissions, behavior when the id is not found, or whether the id is resolved against a live session.

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?

One sentence, front-loaded with the return content and the lookup key, with no padding or redundancy. Every clause earns its 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?

For a single-entity read with one fully documented parameter and no output schema, the description covers what the agent gets (details plus screenshot). It lacks only edge-case behavior such as unresolved or invalid ids, which is a minor gap rather than a blocking one.

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 coverage is 100% and the single parameter is already documented as 'Annotation id (8 chars) or its pin number'. The description's 'by id or number' merely restates that, adding no syntax or format detail beyond the schema. Baseline 3 is correct.

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?

States a specific verb and resource ('full details and screenshot for a single annotation'), and the word 'single' plus 'by id or number' marks it off from list_annotations and get_pending_annotations. It stops short of naming any sibling explicitly, so it sits at a clear-but-undifferentiated 4.

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 description gives no when-to-use guidance and never names an alternative among the six siblings. An agent must infer that this is the fetch-one path versus list_annotations or get_pending_annotations; nothing in the text selects between them.

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