hello_world

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

With no annotations, the description carries the full burden of behavioral disclosure. It explicitly states the return value (a greeting message confirming communication) and implies a non-destructive, read-only operation. It could note it has no side effects, but for a simple hello world tool, it is sufficiently transparent.

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 concise, with clear 'Args' and 'Returns' sections, no fluff, and front-loaded purpose. Every sentence earns its 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?

The tool is very simple, has an output schema, and the description fully explains what it does and what it returns. For its purpose and complexity, the description is complete and adequate.

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 schema provides no description for the 'name' parameter (only title and default), and schema description coverage is 0%. The description compensates fully by explaining the parameter's meaning and default, adding semantic value beyond the schema.

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 clearly states the tool 'verifies client-server communication' through a basic greeting, using a specific verb and resource. It is easily distinguishable from sibling tools that handle presentations, compilation, and previews.

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?

The description provides clear context that the tool is for verifying communication between client and server. It does not explicitly mention exclusions or alternatives, but given its simple nature and distinct purpose among siblings, this is adequate.

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