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CreateMetadataExtension

Creates a new ABAP Metadata Extension (DDLX) in SAP, starting in initial state and optionally activating it.

Instructions

Create a new ABAP Metadata Extension (DDLX) in SAP system. Creates the metadata extension object in initial state.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nameYesMetadata Extension name
detailNoHow much of the answer to return: "terse" (default, the fields you need to act), "full" (the whole parse), "raw" (the document as ADT sent it).terse
activateNoActivate after creation. Default: true
descriptionNoDescription
package_nameYesPackage name
master_languageNoOptional master/original language for the created object (e.g. "EN", "DE", "ZH"). Defaults to the session language (SAP_LANGUAGE) or EN.
transport_requestNoTransport request number, not a task

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changedv16.0.0
    • addedInput schema / properties / detail
      Added value: +{
      +  "default": "terse",
      +  "description": "How much of the answer to return: \"terse\" (default, the fields you need to act), \"full\" (the whole parse), \"raw\" (the document as ADT sent it).",
      +  "enum": [
      +    "terse",
      +    "full",
      +    "raw"
      +  ],
      +  "type": "string"
      +}
    • changedInput schema / properties / transport_request / description
      Previous value: -"Transport request number"New value: +"Transport request number, not a task"
  2. Changed1 schema field changedv8.1.0
    • addedInput schema / properties / master_language
      Added value: +{
      +  "description": "Optional master/original language for the created object (e.g. \"EN\", \"DE\", \"ZH\"). Defaults to the session language (SAP_LANGUAGE) or EN.",
      +  "type": "string"
      +}
  3. First observed

TDQS

C2.9/5.0
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 behavioral burden. It hints at a state outcome ('initial state') but says nothing about required permissions, transport locking, whether the object is inactive, or what happens on failure. Notably, the 'initial state' claim sits in mild tension with the schema's activate default of true, which the description does not reconcile.

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?

Two short sentences, front-loaded with the core action. The second sentence is largely a restatement of the first with only marginal added value ('initial state'), but nothing is verbose or buried.

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 seven parameters, no annotations, and no output schema, the description is too thin. It omits transport handling, activation behavior, and permission requirements that an agent would need to invoke this correctly.

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 the schema already documents all seven parameters including the detail enum and the activate default. The description adds no parameter-level meaning beyond that baseline.

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: 'Create a new ABAP Metadata Extension (DDLX)'. It distinguishes itself from siblings like GetMetadataExtension and UpdateMetadataExtension by the word 'new', though it does not explicitly name alternatives.

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 versus UpdateMetadataExtension, nor any mention of prerequisites such as needing a transport request or an existing package. The agent must infer usage entirely from the tool name.

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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