get_config

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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds that the data comes from /config.txt, which tells the agent this is a local static-file read rather than a live device probe. It says nothing about freshness, whether the config is cached, or error behavior when the file is missing.

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?

A single dense sentence that front-loads the verb and resource before listing the returned contents. Every clause earns its place by describing the payload. It is slightly list-heavy, but nothing is wasted.

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?

With no output schema, the description usefully compensates by enumerating what the configuration contains (input channels, CT models, calibration factors, output scripts). With zero parameters and read-only annotations, there is little else an agent needs before calling it; only the missing sibling-routing guidance keeps it from a 5.

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 takes zero parameters, so per the rubric the baseline is 4. The description cannot add parameter meaning because there is nothing to parameterize, and it correctly avoids inventing any.

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?

States a specific verb (Get) and resource (full IoTaWatt device configuration), then enumerates the concrete payload: input channel definitions with names, CT models and calibration factors, plus output scripts. That is far more than a restatement of the name. It stops short of naming which sibling to use instead (e.g. discover or status), so it is clear but not explicitly differentiated.

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 never says when to reach for this tool versus status, discover, snapshot or query. There is no mention of prerequisites or exclusions, so the agent must infer usage from the resource name alone. The source path (/config.txt) hints at a static-config read, but that is inference, not guidance.

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