Skip to main content
Glama
instavar

@instavar/mcp-server

by instavar

Scaffold VideoSpec

scaffold_video_spec
Read-only

Generate a deterministic VideoSpec skeleton from a template ID and title, returning the structure without writing any files.

Instructions

Return a deterministic VideoSpec skeleton without writing files.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
titleYes
aspectNo9:16
mediaSrcNo
templateIdYes
Behavior4/5

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

Annotations already declare readOnlyHint=true and destructiveHint=false; the description adds the behavioral detail that the output is deterministic and is a 'skeleton' rather than a full spec, which is useful context beyond the annotations.

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?

Single sentence, every word earns its place, front-loaded with the primary action.

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

Completeness3/5

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

No output schema is provided and the description doesn't describe the structure or content of the skeleton, nor does it explain parameter roles, leaving some gaps for an agent invoking with 4 parameters.

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

Parameters2/5

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

Schema description coverage is 0% and the description provides no parameter semantics. Although parameter names and enums are self-explanatory, the description adds no value beyond the schema.

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 uses a specific verb ('Return') and names the resource ('VideoSpec skeleton'), and clarifies the tool produces a deterministic skeleton without writing files, distinguishing it from file-writing sibling tools.

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

Usage Guidelines4/5

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

The phrase 'without writing files' implies the tool is for scaffolding/preview only, giving clear context for when to use it. However, it doesn't name specific alternative tools or state when not to use it.

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

Install Server

Other Tools

Latest Blog Posts

MCP directory API

We provide all the information about MCP servers via our MCP API.

curl -X GET 'https://glama.ai/api/mcp/v1/servers/instavar/mcp-server'

If you have feedback or need assistance with the MCP directory API, please join our Discord server