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

Annotations already declare read-only, idempotent, non-destructive, closed-world, so the safety bar is met. The description adds genuinely useful non-structured context: the endpoint uses page-style pagination rather than the API's usual cursor style, and the required API-key scope `notifications:read`. It omits return shape and any rate-limit behavior, so not a 5.

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?

Two compact sentences front-loading scope, then the pagination caveat, then auth scope. Every clause carries actionable information and nothing is padded.

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 7-parameter read-only list tool with no output schema, the definition covers the risky parts (pagination semantics, auth scope, optional filters). It could still say what a notification record contains or how to detect the last page, but nothing critical to a correct call is missing.

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 71%, just under the threshold where the schema would carry it alone. The description restates `page` 0-indexed and `size` 1–100 (already in the schema) and lists `unreadOnly`/`sortColumn`/`sortDirection` without explaining them — notably `sortColumn` has no schema description and no allowed values, so a real semantics gap remains.

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 first sentence gives a specific verb and resource plus scope ('for the current user in the active workspace'), which is enough to distinguish it from write-side notification siblings. It doesn't explicitly contrast with pm_count_unread_notifications, which is the nearest ambiguous neighbor, so it stops short of a 5.

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?

Usage is implied by the scope statement and the `unreadOnly` mention, and the pagination NOTE helps an agent call it correctly. But there is no explicit when-to-use/when-not guidance or named alternative (e.g. count_unread vs list).

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