get_version

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

The description clearly states the return type (a string with the version) and provides an example. Since there are no annotations, the description carries the full burden, and it does so adequately for a simple read-only tool. No additional behavioral traits are needed.

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 exceptionally concise with just two short sentences. Every sentence is informative, and the important information (what it returns) is front-loaded. No unnecessary words.

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 with no parameters and a single output. The description fully explains what the tool does and what it returns. The output schema exists but is not needed for understanding. The description is complete for this tool.

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?

There are no parameters, so the input schema is fully covered. The description adds no parameter details since none exist, matching the baseline of 4 for zero-parameter tools.

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's purpose: getting the Home Assistant version. It specifies the verb 'get' and the resource 'Home Assistant version', which is unambiguous. No sibling tools perform the same function, so there is no confusion.

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?

No guidance is provided on when to use this tool versus alternatives. While the tool is simple, there are siblings like 'get_ha_config_item' that might also return version info, but no exclusions or context are given.

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