face

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

No annotations are provided, so the description carries the full disclosure burden, and it reveals almost nothing beyond the action itself: no indication of whether the change is instant, whether it interrupts walking/attacking, whether it persists, or what happens on invalid input. The only behavioral content is the direction value mapping, which is really parameter semantics.

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?

A single front-loaded sentence with zero filler that delivers purpose and the value encoding in one pass. Nothing could be removed without losing information.

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 one-parameter, no-annotation, no-output-schema action command, the description covers the two things an agent needs: what the tool does and how to encode the direction. The remaining gap is the ambiguity over undocumented odd values and failure behavior, which is minor for such a simple tool.

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 0% and the single parameter is a bare unnamed integer, so the description supplies the essential meaning by mapping values to compass directions (0=south, 2=west, 4=north, 6=east). It falls short of a 5 because it lists only even values with no range or validity statement, leaving an agent unsure whether 1, 3, 5, 7 (likely diagonals) or out-of-range values are legal.

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?

States a specific verb and resource ("Change facing direction") that is immediately distinguishable from siblings like walk, sit, stand, or attack. It does not name or contrast with any sibling explicitly, which keeps it short of a 5, but an agent can tell what this tool does without opening the schema.

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?

There is no guidance on when to use this tool versus alternatives (e.g., turning before attacking, or whether walking changes facing), and no prerequisites such as needing to be in-game or restrictions while another action is in progress. Usage is only implied by the verb.

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