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MCP Server for OSCAL

MCP Server for OSCAL

by dfkunstler
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Local

query_assessment_results

Query loaded OSCAL Assessment Results by UUID, exact title, or all entries with pagination, and return child type counts for finding and result elements.

Instructions

Return loaded OSCAL Assessment Results with childTypeCounts. For child elements, use list_assessment_results_results or list_assessment_results_findings, then get_child_element.

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": "query_assessment_results"
  }
}

Input Schema

NameRequiredDescriptionDefault
limitNoMaximum items per page, 1-100.
offsetNoZero-based index of the first item.
query_typeNo"all" (paged), "by_uuid", or "by_title" (exact, then full-text).all
query_valueNoUUID or title to match. Required for by_uuid and by_title.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed5 schema fields changedv0.7.1
    • addedInput schema / properties / limit / description
      Added value: +"Maximum items per page, 1-100."
    • addedInput schema / properties / offset / description
      Added value: +"Zero-based index of the first item."
    • addedInput schema / properties / query_type / description
      Added value: +"\"all\" (paged), \"by_uuid\", or \"by_title\" (exact, then full-text)."
    • changedInput schema / properties / query_type / enum
      Previous value: -[
-  "all",
-  "by_uuid",
-  "by_title",
-  "by_type"
-]New value: +[
+  "all",
+  "by_uuid",
+  "by_title"
+]
    • addedInput schema / properties / query_value / description
      Added value: +"UUID or title to match. Required for by_uuid and by_title."
  2. First observedv0.1.0

TDQS

A3.5/5.0
Behavior3/5

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

With no annotations, the description carries the full burden. It implies a read operation and mentions that results include `childTypeCounts`, but it does not describe pagination behavior, what 'loaded' means operationally, or any access constraints. The child-element routing guidance is genuinely helpful context beyond the schema.

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?

Two compact sentences with no filler. The primary return behavior is front-loaded, followed immediately by the child-element alternative.

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 description covers the return's `childTypeCounts` hint and routes child-element access, which is valuable. But it omits how this differs from `list_assessment_results`, does not explain pagination despite `limit`/`offset`, and has no output schema to compensate.

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%, so `limit`, `offset`, `query_type`, and `query_value` are already well documented in the schema. The description adds no parameter-specific meaning beyond the schema, which is the correct baseline when the schema does the heavy lifting.

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 states a specific verb and resource: 'Return loaded OSCAL Assessment Results', and adds that results include `childTypeCounts`. It does not explicitly clarify how this differs from the sibling `list_assessment_results`, so it stops short of full sibling differentiation.

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

Usage Guidelines3/5

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

It gives useful routing guidance for child elements: use `list_assessment_results_results` or `list_assessment_results_findings`, then `get_child_element`. However, it never says when to use this tool versus `list_assessment_results`, `text_search_oscal`, or the other query tools, leaving the main selection decision implicit.

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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