calc_dew_pressure_ideal_vapor_ideal_liquid

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

No annotations are provided, so the description carries the full burden. It explains the physical meaning but does not disclose that the tool assumes ideal vapor/liquid behavior (as implied by the name), nor does it mention input constraints (e.g., components should be in gas phase, mole fractions sum to 1). It also does not state that this is a read-only calculation. While the description is not misleading, it leaves behavioral aspects unaddressed.

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 two concise sentences with no filler. It front-loads the definition and then gives the usage context. Every sentence serves a purpose, making it highly efficient and well-structured.

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 calculation tool, the description is fairly complete: it defines the calculation, its use case, and the inputs (temperature). It has an output schema (not shown but present), which covers return values. However, it could add context about the ideal assumption and input phase requirements, which are important for a thermodynamic calculation. These gaps prevent a 5, but the overall completeness is good.

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 100%, so both parameters (components and temperature) are documented in the schema. The description adds minimal value beyond that, only mentioning 'given temperature' which is already clear from the schema. It does not elaborate on how components should be specified or any constraints, but the schema already covers the basics. A baseline 3 is appropriate.

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: it determines the pressure at which the first drop of liquid condenses from a vapor mixture at a constant temperature. It uses a specific verb ('determines') and resource ('dew-pressure calculation'), and distinguishes itself from siblings like bubble pressure and dew temperature by focusing on pressure at dew point.

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 clear context: it is used to find the pressure for a given temperature when vapor begins to condense. This implies the intended scenario (constant temperature, finding pressure) and indirectly differentiates from bubble-point calculations. It does not explicitly list exclusions or alternatives, but the sibling names (bubble pressure, dew temperature) make the distinction clear.

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