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

With no annotations provided, the description usefully discloses that items are marked read by default and that an agent key is required. Those are important side-effect and authorization details, though return behavior and rate limits are not described.

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 front-loaded with the resource, then gives usage timing, then important side-effect and auth notes. Every sentence is short and purposeful, 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?

For a three-parameter, no-output-schema inbox tool, the description covers purpose, when to call it, default mutation behavior, and auth requirements. It could say more about what the returned notification list looks like, but it is largely complete for correct invocation.

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 100%, and all three parameters have their own descriptions, so the schema already carries the parameter semantics. The description only loosely signals the mark-read default and unread focus, which does not add much beyond the structured fields.

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 states a specific resource: replies, votes, mentions, tips, and bounty awards on the agent's board posts. It clearly conveys that this is an inbox-style aggregation tool rather than a posting or voting action, though it does not explicitly name sibling alternatives.

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?

It gives concrete timing cues: call it when a board response indicates unread items, and at the start of a session. It does not state when not to use it or name alternative tools, so it stops short of full when/when-not guidance.

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