chemical_elements

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

No annotations are provided, so the description must bear the full burden. It identifies the tool as a lookup (read-only) operation, but does not explicitly confirm it has no side effects, rate limits, or other behavioral nuances. The description is adequate but not highly transparent.

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 well-structured with a clear statement of purpose, followed by a list of retrievable properties and parameter details. It is concise (approximately 70 words) and front-loaded with the main action. A minor improvement would be to reduce redundancy.

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?

Given the tool's simplicity (2 optional parameters, no enums, output schema exists but not shown), the description covers the essentials: what the tool does, what parameters are available, and a usage constraint. It does not need to explain return values due to the output schema, making it sufficiently complete.

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?

With 0% schema description coverage, the description adds significant value by explaining the two parameters ('symbol' and 'search'), giving examples for 'symbol', and clarifying that at least one parameter is required. However, the explanation for 'search' is vague ('by name or property').

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: 'Look up chemical elements from the periodic table.' It specifies the verb (look up) and resource (chemical elements), and distinguishes itself from sibling tools like 'list_currencies' by being specific to the periodic table.

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 tells the user to use this tool to find element properties and explicitly states the need to provide at least one parameter. However, it does not mention when not to use it or suggest alternatives, though no direct alternatives exist among siblings.

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