Social List Sessions

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

With no annotations provided, the description carries the behavioral burden. It communicates that listing sessions is a safe discovery step performed before credential acquisition, implying no authentication is needed and no mutation occurs. This is meaningful context beyond the bare verb 'list'.

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?

Two concise sentences front-load the core action ('List the Scratch sessions this server currently holds') and immediately add the practical usage context. No filler or redundant detail is present.

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 no-parameter read-only listing tool with an output schema, the description is complete. It states what is listed, the scope ('this server currently holds'), and when the agent should call it. Nothing necessary for correct invocation is missing.

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 has zero parameters, so there is no param semantics to document. The description does not need to compensate for any schema gaps, and the empty input schema is fully consistent with the tool's purpose.

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 states a specific verb and resource: 'List the Scratch sessions this server currently holds.' This clearly differentiates it from sibling tools like social_connect_session or social_forget_session, which create, modify, or remove sessions rather than listing them.

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 explicitly tells the agent when to use it: 'Use it to discover what is already available before asking the user for credentials.' It gives clear contextual timing, though it does not name alternatives or explicitly state when not to use it.

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