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

Annotations already declare readOnlyHint=true, destructiveHint=false and a closed world, so the safety profile is covered. The description adds only the caller-scoping and post-reconnect resumption context; it says nothing about pagination behavior, result ordering, or what happens when no sessions exist, so it adds modest value over the structured fields.

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 that leads with the action and resource, with the motivating context trailing. There is no filler, though it is terse enough that it omits guidance rather than being wasteful.

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 read-only list tool with annotations carrying the safety profile and no output schema, the description covers the essential 'what and why'. It remains incomplete regarding pagination (a limit param exists with no explanation) and how it relates to the get_work_session / create_work_session siblings.

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 67%: deviceId and workSessionId are documented in the schema, while limit is not. The description reinforces the workSessionId use case ('resume with its workSessionId'), but adds no format, range, or behavior detail beyond the schema, so baseline 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 states a specific verb and resource ('List this caller's work sessions') with explicit scope ('on this computer'), so an agent knows exactly what it does. It does not, however, differentiate itself from the sibling get_work_session or list_process_sessions, leaving the reader to infer the boundary from names alone.

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 implies a usage context - resuming a conversation after reconnecting by retrieving its workSessionId - which gives the agent a reason to call it. But it never states when to prefer this over the sibling get_work_session, nor any prerequisite (e.g., needing a device online), so exclusions and alternatives are absent.

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