abap-adt-mcp

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adt_read_function_module

Read a function module's source and parsed parameters (IMPORTING, EXPORTING, CHANGING, TABLES, EXCEPTIONS) to analyze or edit its signature.

Instructions

Read a function module (SE37): its full source and its parsed parameter interface (IMPORTING / EXPORTING / CHANGING / TABLES / EXCEPTIONS). Optionally pass functionGroup to skip the lookup; otherwise the group is resolved from a repository search. Returns the normalized source (which you can edit and feed back to adt_write_function_module_source) plus a structured 'parameters' array for reasoning about the signature.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "functionModule": "<functionModule>"
    },
    "name": "adt_read_function_module"
  }
}

Input Schema

Name	Required	Description	Default
`functionGroup`	No	Owning function group, e.g. ZAIRFC_TOOLS. Omit to auto-resolve via search.
`functionModule`	Yes	Function module name, e.g. ZRFC_CREATE_CLASS

Schema Changelog

Changes observed during successful MCP inspections.

First observedv1.0.0Jul 28, 2026

TDQS

A3.9/5.0

Behavior3/5

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

No annotations are provided, so the description carries full burden. It mentions read operation and return of source and parameters, but does not disclose error handling, prerequisites, permissions, or side effects. Basic transparency but lacks depth.

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 two sentences long, front-loaded with the core purpose, and contains no unnecessary words. Every sentence earns its place.

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?

Given the tool's relative simplicity (2 params, no output schema), the description covers the key outputs (source, parameters) and notes the write tool for editing. However, it does not detail the structure of the parameters array or error handling, which may be needed for agent reasoning.

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?

Schema coverage is 100% (baseline 3). The description adds meaning for functionGroup by explaining it can be omitted for auto-resolution, which goes beyond the schema description. For functionModule, no extra semantic value is added.

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 it reads a function module, including full source and parsed parameter interface. It specifies SE37 context and distinguishes from generic read tools like adt_read_source.

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?

The description provides guidance on the optional functionGroup parameter to skip lookup, but does not explicitly state when to use this tool versus alternatives like adt_read_source or adt_create_function_module. Usage context is implied but not formally framed.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.