scanner_run_dfa

THE RISK

High Risk

Why scanner_run_dfa needs a policy

This tool triggers execution of a static analysis engine (Graph Engine/DFA scanner) against Apex code. While the analysis itself is read-only in intent, the tool invokes an external analytical process whose execution and scope depend on provided arguments (which code to analyze, configuration parameters).

From the tool's definition The tool executes 'Graph Engine for Apex data flow analysis' which is a static analysis operation that runs code analysis tools on Apex code. The description states it 'detects complex security issues' indicating it performs complex computational analysis.

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

POLICY

How to control scanner_run_dfa

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "scanner_run_dfa": {
      "limits": [
        {
          "counter": "scanner_run_dfa_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

scanner_run_dfa stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

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

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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Destructive clear_default_org Clear the default target org from the Salesforce CLI configuration. After clearing, all to Destructive delete_record Delete a record from a Salesforce org using the REST API. Permanently removes the specifie Destructive package_uninstall Uninstall a second-generation package from the target org. Specify the package ID (starts Destructive logout Log out of a Salesforce org. Use targetOrg to logout of a specific org, or set all to true Execute deploy_start Deploy metadata to Salesforce org with test execution options. Execute execute_anonymous_apex Execute Apex code in a Salesforce Org. This command allows you to run Apex code directly a Execute run_apex_tests Run Apex tests in a Salesforce Org. This command allows you to execute unit tests with var Execute run_code_analyzer Analyze code for quality and security issues. Run list_code_analyzer_rules first to select

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Go deeper

High-risk tools in Salesforce MCP Server → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about scanner_run_dfa

What does the scanner_run_dfa tool do? +

Run Graph Engine for Apex data flow analysis. Detects complex security issues like SOQL/SQL injection. It is categorised as a Execute tool in the Salesforce MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on scanner_run_dfa? +

Register the Salesforce MCP Server MCP server in PolicyLayer and add a rule for scanner_run_dfa: 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 Salesforce MCP Server. Nothing to install.

What risk level is scanner_run_dfa? +

scanner_run_dfa is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit scanner_run_dfa? +

Yes. Add a rate_limit block to the scanner_run_dfa 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 scanner_run_dfa completely? +

Set action: deny in the PolicyLayer policy for scanner_run_dfa. 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 scanner_run_dfa? +

scanner_run_dfa is provided by the Salesforce MCP Server MCP server (advancedcommunities/salesforce-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Salesforce MCP Server tool call.

Start from Salesforce MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →