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navvi_record_stop

Stop recording and assemble frames into an MP4 file. Optionally trim inactive periods between actions.

Instructions

Stop recording and assemble frames into MP4. Optionally trims dead time between actions.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
trimNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

No annotations provided, so description must cover behavioral traits. It mentions assembling frames and optional trimming, but omits details like whether the recorder is closed, what happens if no recording is active, or file location.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two sentences, no redundant words. Front-loaded with the primary action, followed by the optional feature.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple tool with one optional param and an output schema (not shown), the description is adequate. It explains core functionality and the parameter. Could mention what the output contains, but schema covers that.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The single boolean parameter 'trim' is described as 'Optionally trims dead time', adding clear meaning beyond the schema (which has 0% description coverage). Default value is also stated.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('Stop recording and assemble frames into MP4') and distinguishes from siblings like navvi_record_start and navvi_record_gif by specifying the output format and optional trim feature.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No explicit guidance on when to use or alternatives. It is implied for stopping a recording, but doesn't mention prerequisites or contrast with navvi_record_gif or other stop tools.

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

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