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

Annotations already declare readOnlyHint=true, and the description confirms a read operation. It adds that the operation returns 'full details' and references the REST endpoint, but it does not disclose potential errors, response format, or rate limits. Given the simple read nature, this is acceptable but not exceptional.

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 sentences, front-loaded with the primary purpose and immediately followed by the REST endpoint. There is zero wasted text.

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 get-by-ID tool with one parameter, the description is largely sufficient. It states the resource, the identifier, and the REST endpoint. However, with no output schema, it could be more explicit about what 'full details' includes, but the context is strong enough for an agent to invoke it 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?

The schema already provides a description for the single parameter spaceId ('The space id.'), giving 100% schema description coverage. The description adds no extra semantic detail beyond that, so the baseline of 3 is appropriate.

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 action: 'Get full details of a space by its ID.' It specifies the resource (space) and the identifier (ID), and the REST endpoint adds precision. This effectively distinguishes it from sibling tools like gitbook_get_page or gitbook_get_collection.

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 implies usage: when you need full details of a single space by ID. However, it does not explicitly state when to use this over alternatives (e.g., listing spaces or searching). No exclusions or prerequisite conditions are mentioned.

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