smugmug_close

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

With no annotations provided, the description bears the full disclosure burden. It does add a real behavioral consequence — closing stops credits from running, a billing/cost signal — but is silent on whether unsaved session state is lost, whether the call is idempotent, and what happens if no session is open.

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 pairing the action with its purpose. No filler, no restatement of the name, and the cost rationale follows immediately after the action.

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-parameter teardown with no output schema and no annotations, the description covers what it does and why an agent should bother. The remaining gap is teardown semantics — whether in-flight state is discarded or an error occurs when nothing is open.

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?

The tool takes zero parameters, so there is nothing for the description to disambiguate; baseline 4 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?

States a specific verb (close) and resource (the SmugMug browser session), and the action is unambiguously the inverse of the sibling smugmug_open, so an agent can route between them without opening either schema.

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?

Gives an explicit trigger condition — 'when the work is done' — which tells the agent when to call it. It does not name alternatives or state when-not to call it (e.g. mid-task, or before reading final results), so it stops short of full guidance.

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