adt_compare_source

THE RISK

Low Risk

Why adt_compare_source needs a policy

The tool performs a comparison operation that queries and displays source code differences between two systems. It has no side effects, does not create, modify, or delete any objects, and does not execute code or trigger external operations. It fits the Read category as it retrieves and presents data for inspection purposes only.

From the tool's definition Tool description states it 'Compare[s] the source of the same object across two systems. Returns a unified-diff plus added/removed line counts.' This is a read-only operation that retrieves and displays differences without modifying any data.

Documented attack patterns abuse exactly the kind of access adt_compare_source gives an agent:

POLICY

How to control adt_compare_source

PolicyLayer is an MCP gateway — it sits between your AI agents and Claude For Abap, and nothing reaches the server without passing your rules. This is the rule we recommend for adt_compare_source:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "adt_compare_source": {}
  }
}

adt_compare_source is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Claude For Abap — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

Related tools and policies

More Claude For Abap tools

Destructive adt_delete_object Delete an ABAP object. Acquires a lock and issues DELETE. Refused under read-only mode. Execute adt_pretty_print Run the ABAP pretty printer on supplied source code (stateless — no object lookup, no lock Execute adt_run_atc Run ABAP Test Cockpit (ATC) on one or more objects. ATC endpoint shape varies across NetWe Execute adt_run_atc_package Run ABAP Test Cockpit (ATC) over an ENTIRE package via the full ADT worklist flow (create Execute adt_run_atc_transport Run ABAP Test Cockpit (ATC) over every object in a transport request via the full ADT work Execute adt_run_unit_tests Run ABAP Unit tests for one or more objects (typically test container classes). Execute adt_release_transport Release a transport request. Subject to read-only mode. Execute adt_request Generic ADT REST call — escape hatch for endpoints not covered by a high-level tool. Handl

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about adt_compare_source

What does the adt_compare_source tool do? +

Compare the source of the same object across two systems. Returns a unified-diff plus added/removed line counts. It is categorised as a Read tool in the Claude For Abap MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on adt_compare_source? +

Register the Claude For Abap MCP server in PolicyLayer and add a rule for adt_compare_source: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Claude For Abap. Nothing to install.

What risk level is adt_compare_source? +

adt_compare_source is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit adt_compare_source? +

Yes. Add a rate_limit block to the adt_compare_source rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block adt_compare_source completely? +

Set action: deny in the PolicyLayer policy for adt_compare_source. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides adt_compare_source? +

adt_compare_source is provided by the Claude For Abap MCP server (yzonur/claude-for-abap). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Claude For Abap tool call.

Start from Claude For Abap, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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