elements_to_state_vector

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

No annotations are provided, so the description must carry the full burden. It mentions no direct exceptions but returns errors as formatted strings, which is useful. However, it does not disclose if the operation is read-only, requires authentication, or has side effects.

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 structured as a docstring with Args, Returns, and Raises sections. It is informative without being verbose, but the Returns section could be more concise since it essentially repeats the purpose.

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 covers the return format (JSON string with position and velocity in J2000 frame) and error handling. Given the complexity of a conversion tool with a single nested parameter, it is fairly complete, though it could explicitly mention the coordinate frame in the Returns.

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 input schema has one parameter 'orbital_elements' as an object with no property definitions (0% schema coverage). The description adds examples like 'semi_major_axis_m, eccentricity, etc.', which provides some meaning, but it's still vague and does not list all expected fields or their types.

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 converts orbital elements to a state vector in the J2000 frame. It uses specific verb ('Convert') and resource ('orbital elements to state vector'), and is distinct from its inverse sibling 'state_vector_to_elements'.

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?

No explicit guidance on when to use this tool versus alternatives like 'state_vector_to_elements' or other orbital tools. The description lacks context for ideal usage scenarios or prerequisites.

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