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

The annotations already establish readOnlyHint=true, destructiveHint=false, and openWorldHint=true, so the safety profile is covered. The description adds useful return-field context (program, session dates, percent attended) and the endpoint, but it does not disclose pagination, ordering, attendance semantics, or authentication needs.

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 two compact clauses with no filler: return fields are listed first and the endpoint is provided last. It is appropriately sized for a simple one-parameter read-only listing tool.

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 simple read-only tool with one required parameter and no output schema, the description is nearly complete: it states the resource, scope, endpoint, and key returned fields. It could be fuller by mentioning pagination or whether all session statuses are included, but the core calling information is present.

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%, but there is only one parameter and the description shows it in the endpoint as {user_id} while referring to 'a user'. That clarifies the parameter’s role, though it does not explain the accepted user ID source or format beyond the schema’s integer constraint.

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 a specific resource and scope: ILT sessions belonging to one user, and it previews the returned fields. It implicitly distinguishes itself from the sibling list_ilt_sessions by saying 'a user is part of', though it does not explicitly name the alternative.

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 'a user is part of' and the endpoint, which makes clear this returns sessions for one user. However, there is no explicit guidance on when to use this vs list_ilt_sessions, list_ilt_completions, or other ILT-related siblings, and no prerequisites are stated.

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