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

No annotations are provided, so the description carries the burden. It discloses one meaningful behavioral trait — results only exist after the post fires — but says nothing about what happens if the post hasn't fired, auth requirements, or error/empty behavior.

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?

A single front-loaded sentence with no filler. The parenthetical condition is compact, though the phrasing "after it fires" is slightly informal.

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 one-param read tool with no annotations and no output schema, the description conveys the core result shape (per-platform results) but leaves the id's meaning and the not-yet-fired case unexplained.

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 0% and the single id parameter is undocumented in the schema. The description's "one post" weakly implies id identifies the post, but adds no format or source guidance for the identifier.

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 (Fetch) and resource (one post with its per-platform results), and the singular phrasing distinguishes it from list_posts. It doesn't explicitly name a sibling, but the scope contrast with the list tool is evident.

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?

"After it fires" implies the temporal precondition for using this tool, which is useful context, but no alternative or exclusion is named (e.g. when to prefer list_posts instead). Usage is only implied.

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