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MYOB Codex MCP

MYOB Codex MCP

by jaeko44
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Local

myob_tax_code_list

Retrieve tax codes from MYOB Business and AccountRight to streamline payroll, invoicing, and reporting. This read-only tool provides accurate tax code lists on demand.

Instructions

List tax codes.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

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

Input Schema

NameRequiredDescriptionDefault
topNo
business_idNo

Output Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.2.0

TDQS

C2.4/5.0
Behavior2/5

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

With no annotations provided, the description carries the full burden. 'List tax codes.' offers no behavioral detail such as authentication needs, pagination behavior, business context filtering, or side effects. This is insufficient for safe autonomous invocation.

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

Conciseness2/5

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

The description is extremely short, but this is under-specification rather than effective conciseness. A single phrase without supporting detail does not earn credit for concise structure.

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?

Even with an output schema present, the description lacks essential context. It does not clarify whether a business_id is required, how pagination works, or what distinguishes this list from related list endpoints.

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

Parameters1/5

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

Schema description coverage is 0%, and the description does not explain the 'top' or 'business_id' parameters. The agent has no idea what these parameters mean or how to use them correctly.

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?

The description 'List tax codes.' clearly states the action (list) and the resource (tax codes). It distinguishes this from most sibling tools by naming a specific entity, though it doesn't explicitly differentiate from other list tools.

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 guidance on when to use this tool versus alternatives. It does not mention prerequisites, typical use cases, or why an agent might choose this over other list 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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