add_screen_glow

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

The description discloses the visual effect (orange glow), its purpose (feedback for automated actions), and the return type (success/error message). No annotations are provided, but the description adequately covers the basic behavior without contradictions.

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 concise with three sentences plus a returns line. The important usage note is highlighted with 'IMPORTANT', making it well-structured and easy to parse.

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 description fully covers what the tool does, when to use it, and what it returns. It is complete for a simple tool with no parameters and a clear purpose, especially given the existence of a complementary sibling tool to remove the glow.

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 no parameters, so the schema coverage is trivially 100%. Following guidelines, the baseline is 4. The description does not need to add parameter information since none exist.

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 adds an orange glow around screen edges to indicate automated actions in progress. It uses a specific verb 'add' and resource 'screen glow', and the purpose is distinguishable from its sibling 'remove_screen_glow'.

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 instructs to call this tool FIRST before performing automated actions, providing clear usage context and timing. It implies when not to use (after actions) and the complementary sibling tool is implied.

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