insert_from_source

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

With no annotations provided, the description carries the full burden of disclosing behavior, but it discloses none: no mention of timeline mutation, source monitor requirements, playhead dependence, or side effects. An agent cannot predict what this operation does beyond the literal name.

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 short, but it is under-specified rather than genuinely concise. It contains no useful information beyond the tool name, so brevity is not a virtue here.

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 tool with no annotations and no output schema, the description is severely incomplete. It fails to explain the operation's effect, prerequisites, or relationship to the active sequence and source monitor, leaving an agent unable to invoke it correctly with confidence.

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?

The tool has zero documented parameters and 100% schema coverage, so no parameter explanation is required. The baseline of 4 applies because the schema is empty and the description need not compensate for undocumented parameters.

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 is essentially a restatement of the tool name: 'insert from source' adds no verb-object explanation or resource detail. It does not clarify what gets inserted, where it gets inserted, or how it differs from siblings like overwrite_from_source.

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 about when to use this tool versus the many related editing tools such as overwrite_from_source, add_to_timeline, or open_in_source. The phrase 'expanded operation' gives no actionable context for selection.

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