pixera_apply_cue

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

With no annotations, the description carries the full burden of behavioral disclosure, and it discloses almost nothing beyond the action itself. It does not say whether firing a cue changes transport state, what happens on an out-of-range index, whether the operation is idempotent or destructive, or what authorization/context is required.

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 no filler; the action and both scoping indices come first, and the parenthetical qualifier is placed where it is needed.

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 presence of an output schema removes any need to describe return values, so the main gaps are behavioral and routing-related: no guidance on obtaining indices and no delineation from the by-number sibling. For a two-parameter actuator this is minimally adequate but leaves real ambiguity.

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%, so the description must compensate for two undocumented parameters. It adds one genuinely useful fact, that indices are zero-based, but says nothing about how to obtain valid timeline or cue indices or how out-of-range values are handled.

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 gives a concrete verb (fire), resource (cue), and scope (a cue index on a timeline index), so the agent knows exactly what the call does. It only implicitly distinguishes itself from the sibling pixera_apply_cue_by_number via the word 'index', without stating the index-vs-number difference explicitly.

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 statement of when to use this tool rather than the near-identical pixera_apply_cue_by_number, nor any prerequisites (e.g., a loaded project, a transport state, or how to discover valid indices). The agent must infer usage entirely from the name.

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