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

Annotations already cover readOnly, idempotent, non-destructive, and closed-world, so the description's main added value is scoping the payload: metadata plus nested page structure, with page content explicitly excluded and deferred to get_page. That clarifies what an agent will and won't get back, though it says nothing about size/volume of the nested structure for large handbooks.

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?

Two short sentences, both earning their place: the first defines the return scope, the second prevents the most likely misuse by pointing at get_page. Front-loaded with no filler.

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?

An output schema exists, so return values need not be spelled out, and annotations cover the safety profile. What remains missing is how to source a valid handbookId, which matters because the tool cannot be called correctly without it. Otherwise complete for a single-parameter read tool.

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 single parameter handbookId has 0% schema description coverage — the schema only supplies a 24-hex-character pattern. The description never explains the parameter at all: not its format, not that it is a handbook ID rather than a page ID, and not that it is presumably obtained from list_handbooks or search_handbooks. This is the main gap in an otherwise clean definition.

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 (read handbook metadata plus its current nested page structure) and explicitly demarcates scope from the get_page sibling by naming what get_page does instead. An agent can distinguish this from list_handbooks/search_handbooks by the fact that it takes a single handbook ID and returns structure.

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?

Explicitly routes the agent: content retrieval belongs to get_page with a page ID, this tool only returns metadata and page structure. However, it gives no guidance on when to prefer this over list_handbooks or search_handbooks (e.g., 'use those to find an ID first'), leaving one sibling relationship implicit.

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