release_file_reservations

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

Annotations already declare destructiveHint=true and non-idempotent behavior, so the safety profile is covered. The description adds genuinely non-obvious behavior: the return value semantics ('returns how many were released') and that a zero count is not an error — a real anti-confusion signal. It does not restate that release is irreversible, but that is already implied by destructiveHint.

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?

Front-loaded with the action and the timing rule, then filter semantics, then return behavior. Every sentence carries distinct information; no repetition of the name or schema text.

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 4-param, no-output-schema mutation tool this is nearly complete: it covers when to call, how filters combine, and what the return count means. Minor gaps remain (nothing about reservation expiry or whether release is scoped per-project), but nothing that would cause a misinvocation.

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 100%, so baseline is 3, but the description goes further by defining filter interaction semantics the schema does not: empty filters impose no restriction, and two nonempty filters must both match. That clarifies the AND/OR behavior of paths vs file_reservation_ids, which the terse schema strings ('Only your reservations with exactly these patterns') do not.

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 verb+resource (release active file reservations) and immediately frames the agent's situation ('when you finish work'). It is cleanly distinguished from the sibling renew_file_reservations, so no schema browsing is needed to tell them apart.

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?

Explicitly names the alternative and the condition that selects it: use renew_file_reservations while work continues, use this when work finishes. It also spells out the filter decision (omit both to release all, supply paths or ids for a subset), leaving nothing to inference.

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