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Cart MCP Server

Cart MCP Server

by FlatNineOrg
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Remote

get_account

Retrieve authenticated Cart API account details, including current plan, email, daily request count, and remaining API quota.

Instructions

Get information about the authenticated Cart API account, including the current plan, email, daily request count, and request limit. Use this to check remaining API quota.

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": "get_account"
  }
}

Input Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

A4.5/5.0
Behavior4/5

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

No annotations are provided, so the description carries the full burden of disclosing behavioral traits. The description clearly indicates it is a read operation ('get information') and implicitly requires authentication through 'authenticated account.' It does not hide any side effects or destructive actions. For a simple tool with no parameters and no complex behavior, this is sufficiently transparent.

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?

The description is a single, focused sentence that immediately conveys the tool's purpose and key information. Every word adds value, and the most important action ('Get information about the authenticated Cart API account') is front-loaded. No extraneous content.

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

Completeness5/5

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

Given the tool has no parameters, no output schema, and covers a simple account info retrieval, the description is complete. It lists the specific fields returned (plan, email, daily request count, request limit) and provides actionable context (check remaining API quota). There are no gaps in coverage.

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 tool has 0 parameters, and the schema coverage is 100%. According to guidelines, when there are no parameters, the baseline is 4. The description does not need to add parameter information because there are none to describe.

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 tool gets information about the authenticated Cart API account, listing specific fields (plan, email, daily request count, request limit). This verb and resource combination is distinct from all sibling tools, which focus on stores, products, ads, and suppliers, with no other tool retrieving account-level data.

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 description explicitly states 'Use this to check remaining API quota,' providing clear usage context. While it does not specify when not to use it, there are no sibling tools that serve a similar purpose, so exclusion guidance is not necessary. The guidance is direct and helpful.

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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