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

Annotations already declare readOnly, idempotent, non-destructive, and closed-world, so the safety profile is fully covered without the description. The description does add two useful traits beyond that: results are tenant-scoped and entries carry "concise status metadata" (a lightweight projection rather than full records). It says nothing about pagination sequencing or result caps, which is the main remaining gap.

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, and the scoping qualifier comes before the return-shape note. It is efficient, though its brevity is part of the under-specification problem rather than a virtue in itself.

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 paginated list tool with three undocumented parameters and no output schema, the description should at minimum explain the page-size limit, how to continue via cursor, and what the status filter does. It also leaves the return shape at "concise status metadata" without saying which fields that includes. Only the read-only annotations relieve part of the burden.

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% and there are three parameters (limit, cursor, status), so the description carries the full explanatory burden. It mentions none of them — not the page-size cap, not the opaque cursor for paging, and not the draft/published/all status filter that would matter most to callers. "status metadata" only glancingly gestures at the status concept.

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?

"List tenant-owned WebinarStack webinars" gives a clear verb plus resource and adds a scope qualifier (tenant-owned), so an agent knows this enumerates webinars within the current tenant. It does not name or contrast any sibling (e.g., analytics_summary or upcoming_sessions), so differentiation is left to the naming convention 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?

There is no when-to-use guidance: nothing says when to pick this over summary, analytics_summary, or upcoming_sessions, and no prerequisites or exclusions are stated. The only implicit hint is that it lists rather than analyzes, which the agent must infer.

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