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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is covered. The description adds useful behavioral context by stating that it returns the full text plus title, URL, and metadata, which goes beyond the annotation-only signal. No contradictions exist.

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 short and front-loaded with the core action and purpose. It repeats 'detailed analysis and citation' twice, which is mildly redundant, but the text remains efficient and well organized.

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-parameter fetch tool with an output schema, the description is sufficiently complete: it states what is retrieved, when to use it, and what the output includes. There are no major gaps that would prevent an agent from invoking 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?

Schema description coverage is 100%, and the id parameter is already well documented with accepted formats and lookup order. The description repeats the thread/post concepts but adds no new meaning beyond what the schema provides, 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 identifies the action as retrieving the complete content of a WindowsForum document (thread or post) by ID. It gives a specific verb and resource, and the 'use after search to read the full discussion' phrasing helps position it against related tools, though it does not explicitly contrast it with get_thread or get_post.

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 explicitly says to use this after search to expand a result into its whole document, giving clear context for when it is appropriate. It does not state exclusion criteria or name alternatives like get_post/get_thread, but the 'use after search' guidance is strong enough for an agent to select it correctly.

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