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

No annotations are provided, so the description carries the full behavioral burden. It does disclose the confirm-gated write behavior, which is meaningful, but that is also documented in the schema for the confirm parameter, and it says nothing about permissions required, whether an existing attendance record is overwritten, or idempotency of repeated calls.

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 zero filler; the scope elements (statuses, location, date) and the gating caveat are packed efficiently with no repetition of the name or title.

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 mutation tool with no annotations, no output schema, and 29% schema coverage, the description should do more: it omits the notes parameter, the preview-only return behavior, and any permission or overwrite semantics. What is present is correct but leaves real gaps an agent would need to call this confidently.

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 only 29% (only confirm and attendanceDate are documented). The description adds meaning for status (enumerates present/absent/late/on-leave), location, and date, but says nothing about coachId, organizationId, or notes, so several parameters remain undocumented in both places.

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?

Specific verb+resource: 'Mark a coach present/absent/late/on-leave at a location for a date' tells the agent exactly what is recorded and at what granularity. It does not, however, name its read counterpart get_organization_coach_attendance or otherwise explicitly distinguish itself from siblings, leaving that inference to the agent.

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?

The '(confirm-gated)' tag implies a two-step preview-then-execute usage pattern, which is useful context for when the tool actually mutates state. Beyond that there is no when/when-not guidance, no prerequisites, and no comparison to alternatives such as mark_gym_class_attendance or the read-side get_organization_coach_attendance.

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