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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description does add useful behavior beyond that — newest-first ordering, per-channel status, and links to published posts — but says nothing about pagination, default limit, or whether results span all channels by default.

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 tight sentence with the key attribute (newest first) and return content front-loaded, with no filler. It is arguably too sparse rather than too verbose, but the structure itself is clean.

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?

This is a filtered list tool with three optional parameters and no output schema, and the description omits the filtering capability entirely — the single most important thing an agent needs to know before calling it. With annotations covering safety, the missing piece is the parameter/behavior story, which is substantial here.

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 0% across three parameters, so the description carries the full burden and does not meet it. It never mentions that limit caps result size, that status filters by lifecycle state, or that channelId narrows to one channel — the enum values and the 1-100 limit are left entirely to raw schema inspection.

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 identifies the resource ('recent posts') and adds ordering and returned content, so an agent can tell it is a listing tool. However, it is a noun phrase with no verb and makes no attempt to distinguish itself from get_post or list_channels, which is the main ambiguity an agent faces here.

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 when-to-use or when-not-to-use guidance, and no mention of the obvious alternative get_post for fetching a single post. The agent must infer from the name alone that this is for browsing rather than retrieving a specific item.

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