list_leases

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

No annotations exist, so the description owns the burden of behavioral disclosure. It does state the tool retrieves 'live data' and returns 'all leases', which clarifies its scope and data freshness. However, it does not mention pagination, rate limits, or whether the query can be filtered. For a single-purpose list tool this is acceptable but not exhaustive.

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 two sentences: the first is a clear statement of the action and data source, the second lists the return fields and typical use cases. No filler or repetition; it is appropriately compact.

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?

Despite lacking an output schema and annotations, the description supplies the key elements an agent needs: what data is returned, the data origin, and the use cases. For a zero-parameter list tool, this is nearly complete. It omits pagination or ordering behavior, but those are secondary for a simple list operation.

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, and the schema shows no properties, so the description is not expected to add parameter details. With an empty parameter space, the provided description adds meaningful context (what fields come back) that supports interpretation of the result, but it does not need to explain parameter semantics.

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 uses a specific verb-resource pair ('List all leases'), names the data source ('Rentvine live data'), and enumerates the returned fields. It is immediately distinct from sibling tools such as list_tenants or list_properties by the object type, so an agent can tell what the tool does.

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 gives explicit conditions for using the tool: 'questions about lease expirations, rent amounts, or active tenants.' It does not name alternatives to exclude, but the use cases are clear and actionable, leaving little ambiguity about when to invoke this tool.

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