set_image_alt_text

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

No annotations are provided, so the description must disclose behavioral traits. It mentions the technical attribute mapping (descr on wp:docPr) but does not explain if it overwrites existing values, side effects, or required permissions. Basic clarity but lacks depth.

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 a clear first-line purpose and a structured 'Args:' section. Every sentence adds value, and no unnecessary words are used.

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?

For a simple setter tool with 3 parameters and an output schema, the description covers the basic action but lacks context on error handling, return values, and preconditions. Adequate but could be more comprehensive.

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 schema has 0% parameter description coverage, so the description must compensate. It explains alt_text and title as attributes but does not clarify what rId represents or how to obtain it. Provides some value but incomplete.

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: setting accessibility alt text and title on an embedded image. It uses a specific verb-resource combination and distinguishes from siblings like 'set_alt_text' and 'update_image'.

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 implies usage for setting image alt text but does not provide explicit guidance on when to use this tool versus alternatives, such as 'set_alt_text' or 'update_image'. No conditions or prerequisites are mentioned.

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