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QuickBooks Online MCP Server

QuickBooks Online MCP Server

by NightSquawk

create_class

Creates a new class in QuickBooks Online to categorize transactions, with optional parent class for sub-classes.

Instructions

Create a new class in QuickBooks Online for categorizing transactions.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "params": "<params>"
    },
    "name": "create_class"
  }
}

Input Schema

NameRequiredDescriptionDefault
paramsYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

C2.7/5.0
Behavior2/5

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

No annotations are provided, so the description carries the full disclosure burden. It confirms this is a mutation ("Create") and notes classes are used to categorize transactions, but says nothing about permissions required, duplicate-name behavior, whether the call is idempotent, or what is returned on success.

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

Conciseness4/5

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

A single tight sentence with no filler and the action front-loaded. It is efficient, but its brevity reflects missing content rather than disciplined compression, and there is no structure beyond the one clause.

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

Completeness2/5

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

For a mutation tool with no annotations, no output schema, and a nested params object, the description is too thin. An agent still lacks required-parameter cues, sub-class/parent behavior, and any sense of the result, leaving significant gaps relative to the tool's complexity.

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 reported at 0% and the description mentions no parameters at all. It does not mention the required name, and it omits parent_ref entirely, which is the non-obvious field since it governs sub-class creation inside a nested object.

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

Purpose4/5

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

States a specific verb and resource ("Create a new class") and adds the domain (QuickBooks Online) plus what classes are for (categorizing transactions). The name alone already separates it from get_class, update_class, and search_classes, so no explicit sibling disambiguation is needed, though nothing in the text routes the agent that way.

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

Usage Guidelines2/5

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

There is no when-to-use guidance, no mention of prerequisites or permissions, and no indication of what to do if a class with the same name exists. The agent must infer when creating a class is appropriate versus using search_classes to check first.

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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