duplicate_segment_tool

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It hints that the source is preserved and a copy lands elsewhere ('at a new time'), but says nothing about whether bounds are validated, whether the operation ripples/lengthens the timeline, whether it is undoable, or what permissions are needed.

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, which is structurally clean. But for a four-parameter mutation tool with no annotations, this brevity is under-specification rather than true conciseness.

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?

An output schema exists, so return values need not be described. Still, with no annotations, 0% parameter coverage, and no usage context, the definition is too thin for a mutation tool that an agent must invoke with three required numeric coordinates.

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% for four parameters (source_start, source_end, insert_at, project_path), so the schema provides titles only. The phrase 'at a new time' loosely maps to insert_at and 'segment' implies a source range, but units, ordering constraints (insert_at vs source range), and project_path semantics remain entirely undocumented.

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 ('Duplicate') and resource ('timeline segment') with the effect ('at a new time'), so an agent knows what it does. However, it offers no differentiation from near-identical siblings like copy_segment_tool, paste_segment_tool, or move_segment_tool, leaving the agent to guess which one to pick.

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 when-to-use guidance at all: no prerequisites (e.g. does a segment need to be selected first?), no exclusions, and no pointer to the copy/paste alternatives. The agent must infer everything from the name.

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