MyLearners K53 & DMV Practice Test

check_inventory

Check live MyLearners K53 course offerings, 100% free practice simulator availability, and real-time D1 platform candidate and completed test counts.

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": "check_inventory"
  }
}

Input Schema

Name	Required	Description	Default
`category`	No	Optional offering category filter ('all', 'practice', 'course', 'dltc')

Schema Changelog

Changes observed during successful MCP inspections.

AddedOct 31, 2026

TDQS

C2.9/5.0

Behavior2/5

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

With no annotations, the description carries the full behavioral burden. It adds only that data is live/real-time; it does not state whether the operation is read-only, what permissions are needed, what is returned, or whether there are rate limits or side effects.

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?

The definition is a single front-loaded sentence with no filler sentences. It is somewhat dense and includes promotional phrasing like '100% free', but it remains efficient and appropriately sized.

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?

The tool has one optional parameter and no output schema, so the description does not need to explain return fields in detail. However, it does not clarify how this inventory check differs from get_platform_stats or what exactly the response contains, leaving some contextual gaps.

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

Parameters3/5

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

Schema description coverage is 100%, and the single optional 'category' parameter is fully documented with an enum in the schema. The description does not mention the parameter at all, but given the complete schema coverage, the baseline score of 3 is appropriate.

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 uses a specific verb, 'Check', and names concrete resources: MyLearners K53 course offerings, simulator availability, and D1 platform test counts. It is clear what the tool does, but it bundles multiple data domains and does not distinguish itself from siblings like get_platform_stats or check_readiness.

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 explicit guidance on when to use this tool versus alternatives such as get_platform_stats or check_readiness. The word 'live' implies checking current status, but no conditions, exclusions, or sibling routing are stated.

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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