make_4_frame_idle_animation

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

With no annotations, the description effectively discloses the core behaviors: duplicating frames, nudging layer, setting durations, adding a tag, and returning a manifest. It does not cover what happens to existing frames or tags, but provides substantial transparency.

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?

Three concise sentences front-load the purpose, then detail the process and output. Every sentence adds value with no redundancy.

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 5 parameters (1 required) and no output schema/annotations, the description explains the output format and main steps but lacks details on edge cases (e.g., existing frames, missing layer) and full parameter semantics. Adequate but could be more complete.

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 explains 'bob_pixels' and mentions 'layer', but does not individually describe all 5 parameters (e.g., 'filename', 'tag_name', 'frame_duration_ms' are implied but not explicitly detailed). Adds moderate value beyond 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 clearly states the verb 'turn' and resource 'single-frame sprite', specifies the output as a '4-frame idle bob loop', and lists the key transformations. It distinguishes from siblings like make_8_direction_walk_template by focusing on a 4-frame idle loop.

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 implies the tool is for creating an idle animation from a single frame, but does not explicitly state when to use it vs alternatives (e.g., when you have a multi-frame sprite) or any prerequisites. Lacks guidance on exclusions.

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