get_light_state

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

No annotations provided, so description bears full burden. It declares read-only operation, which is non-destructive. However, it does not mention rate limits, error behavior, or handling of unreachable lights. For a simple read, this is adequate but not exceptional.

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?

Extremely concise: two-line docstring plus a summary sentence. Every sentence provides useful information without redundancy. Front-loaded with purpose.

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?

Output schema exists, so return values need not be explained. Description covers purpose and parameter usage. Lacks error handling or edge case info, but adequate for a simple read 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?

Schema coverage is 0% (no parameter descriptions in schema), but the description explains the address parameter's source (scan_hue_lights) and default behavior (env var fallback), adding significant meaning beyond the bare 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?

Description uses specific verb 'Read' and resource 'state of a Philips Hue light', listing key attributes (power, brightness, color mode). It clearly distinguishes from sibling tools that perform mutations like turn_on or set_brightness.

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?

Provides guidance that address comes from scan_hue_lights and can be omitted for an environment variable. Implicitly sets context for when to use this tool (after scanning, for reading). Lacks explicit when-not-to-use or alternatives, but sufficient for a simple tool.

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