evaluate_expression

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only states that it evaluates an expression and returns a result, but does not mention potential side effects, safety concerns, supported languages, or error behavior. For an expression evaluation tool, this is a notable gap.

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 a single concise sentence with no wasted words, making it easy to parse. However, it is under-specified, so while it is structurally efficient, it sacrifices completeness for brevity.

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 has two parameters, no annotations, and no output schema, the one-sentence description is insufficient. It does not explain the language default, the meaning of the expression parameter, or what kind of result to expect. The description is not complete enough for an agent to invoke this tool reliably without additional information.

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 description coverage is 0%, and the description does not mention the 'expression' or 'language' parameters at all. It fails to explain what values are expected or how the language parameter affects behavior, leaving the agent without essential information to construct valid calls.

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 verb ('Evaluate') and resource ('Houdini expression') and mentions the outcome (return the result). It is specific enough to distinguish from many siblings, though it doesn't explicitly differentiate from similar tools like execute_hscript or execute_houdini_code.

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 provides no guidance on when to use this tool versus alternatives like set_expression, get_expression, or execute_hscript. There is no mention of use cases, prerequisites, or exclusions, leaving the agent to infer context from the name alone.

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