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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is covered. The description adds the returned data shape (plan, remaining allowance, reset time), which is mild added context. It says nothing about auth requirements beyond what the schema's workspaceId note carries, and the odd idempotentHint=false on a read tool goes unaddressed.

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?

One short sentence fragment with zero filler, and the most important payload (the plan and remaining links) is front-loaded. It is efficient, though it is slightly under-specified rather than maximally informative.

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 zero-required-parameter, read-only query with full annotation coverage and an output schema, the description is sufficient: an agent knows what it returns and can call it safely. Only the absence of usage guidance keeps it from being fully complete.

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% and the single workspaceId parameter is fully documented in the schema, including grant semantics and the omit-for-own-space default. The description adds nothing about parameters, so the baseline 3 applies.

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 names the concrete resource and its contents: the plan, remaining new links for the period, and the reset timing. An agent can tell this apart from snipzr_get_link_stats or snipzr_list_links by the billing/quota framing. It is a noun fragment without an explicit verb, but the resource is unambiguous.

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 explicit when-to-use statement, no prerequisites, and no named alternative. Usage is only implied by the returned fields (quota checking before creating links), which an agent must infer from the sibling set on its own.

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