set_bone_track_keys

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 does not disclose whether setting keys overwrites existing keys, appends to a track, or requires the track to exist. For a mutating tool, this lacks critical behavioral context.

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 concise with an Args list that mirrors the schema but adds a tiny bit of detail. It is front-loaded with the purpose and avoids fluff. However, the Args section is largely redundant with the schema, so not every sentence earns its place fully.

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 tool is a complex mutation with 5 required parameters and no annotations. The description does not mention prerequisites, whether keys are replaced or appended, how the JSON arrays are interpreted, or any other operational context. Given the available output schema, return values are covered, but the overall operational context is missing.

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%, so the description must compensate. It does add format details (e.g., 'JSON array of [x,y,z] positions'), but the explanations are minimal and do not clarify semantics like time alignment or keyframe ordering. It provides marginal value beyond the schema.

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 states a specific verb and resource: 'Set bone track keys for an animation.' This clearly distinguishes it from sibling getters like get_bone_tracks and track-management tools like add_bone_track/remove_bone_track.

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. It does not mention prerequisites (e.g., that a bone track must already exist, how it relates to add_bone_track) or provide any exclusions. The usage context is implied but not stated.

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