bookshelf_list_history_since

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

Annotations declare readOnlyHint=true, so the read-only safety is known. The description adds no behavioral context beyond a basic action – no mention of pagination, result limits, default date behavior, or any side effects. It does not contradict annotations but fails to provide useful behavioral detail.

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 very brief and front-loaded with the core action. However, the parameter listing is not well-structured (misleading names) and lacks additional context. It is concise but not particularly helpful.

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 output schema exists, so return values are structured elsewhere. The description covers the basic read operation but lacks parameter semantics and usage guidance. For a filtered list tool with optional parameters, this is minimally viable but not complete.

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 description lists parameter names but uses camelCase (eventType, includeAuthor, includeBook) that mismatches the schema's snake_case (event_type, include_author, include_book). It provides no explanation of parameter meaning beyond the names, and with schema description coverage at 0%, it fails to compensate for the lack of parameter documentation.

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 'List history since' – a clear verb and resource, and 'since' implies a date filter, distinguishing it from the plain bookshelf_list_history and bookshelf_list_history_author siblings. However, it doesn't specify what type of history (e.g., book, system, events), leaving ambiguity about the resource 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?

There is no guidance on when to use this tool versus alternatives. It doesn't mention that this is a filtered history variant, nor does it differentiate from bookshelf_list_history or bookshelf_list_history_author.

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