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

readOnlyHint=true already establishes the safe-read profile, so the description does not need to restate that. It adds the field set and the endpoint, but says nothing about pagination behavior or result ordering even though the schema exposes id_gt/id_lt cursors. Useful context beyond annotations, but modest.

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 tight sentences, resource definition front-loaded and endpoint appended. Zero wasted wording and nothing to trim.

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?

Safety is covered by annotations, parameters are fully specified in schema, and the description enumerates returned fields in lieu of an output schema. Combined, an agent has everything needed to call it, with only pagination/ordering behavior left implicit.

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 100%, so all nine parameters (including the pagination cursors and filters) are already well documented. The description adds no parameter semantics beyond what the schema provides, which is the correct baseline-3 outcome.

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?

States a specific resource (blocked-out time in practitioner calendars, with leave/admin examples) and enumerates the fields returned, plus the underlying endpoint. It is clearly a list/read operation and the 'blocked-out' framing distinguishes it conceptually from sibling availability tools, though it doesn't name those siblings explicitly.

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?

No guidance on when to use this versus splose_get_practitioner_availability or splose_find_free_slots, which are the obvious neighbors. Usage is only implied by the resource description; there are no exclusions or selection criteria.

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