perfmon_setup

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. 'Set up' implies a mutating setup action, but nothing is said about side effects, whether it writes into the project directory, what prerequisites exist, or why an api_key is required. The agent is left blind to the operation's footprint.

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?

The description is a single short sentence with no wasted words and the action is front-loaded. However, the brevity reflects under-specification rather than deliberate economy — a few additional clauses about scope, output, and prerequisites would have earned their place.

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 setup tool with two parameters and no annotations or output schema, the agent needs to know prerequisites, what the setup produces, and how it differs from the roughly ten perfmon_*/monitor_setup_* siblings in the list. None of that is present, so the description is materially incomplete for safe invocation.

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 50%: directory is documented as 'Project directory' in the schema, but api_key has no schema description. The tool description names neither parameter and gives no hint that api_key is needed or what it authenticates, so the agent cannot determine how to fill the undocumented parameter correctly.

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 has a verb ('set up') and a resource ('real-time performance monitoring'), so it is not a tautology, but 'set up' is generic and the resource is vague — it does not say which platform, what files or configs get created, or what 'real-time performance monitoring' concretely means here. Among siblings like monitor_setup_prometheus, monitor_setup_grafana, perfmon_add_alerts, and perfmon_generate_dashboard, an agent cannot tell what scope this tool covers.

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 mention of when to use this tool, when not to use it, or any alternatives. Given the long sibling list containing closely related perfmon_* and monitor_setup_* tools, the agent is given zero routing guidance and would have to guess whether perfmon_setup precedes perfmon_add_alerts, replaces monitor_setup_grafana, or is orthogonal to both.

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