apex_execute · Salesforce MCP Server MCP: Risk & Policy

WHAT IT DOES

What apex_execute does on Salesforce MCP Server

AI agents invoke apex_execute to trigger actions in Salesforce MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why apex_execute needs a policy

apex_execute permits execution of arbitrary Apex code, which can have broad effects depending on the code submitted. While Apex execution itself is not inherently destructive or financial (those would require specific code), it is an Execute category tool because it runs code whose effects are argument-dependent and can trigger external operations.

From the tool's definition Tool name 'apex_execute' and description 'Executes an Apex REST request' indicate execution of arbitrary Apex code on Salesforce platform. Apex is Salesforce's proprietary programming language that can modify data, call external APIs, and perform side effects.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

apex_execute Rate-limited

apex_execute 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.

View as policy code

policy.json

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

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Salesforce MCP Server, so you can run agents against it safely.

FAQ

Questions about apex_execute

What does the apex_execute tool do? +

Executes an Apex REST request. 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 apex_execute? +

Register the Salesforce MCP Server MCP server in PolicyLayer and add a rule for apex_execute: 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 apex_execute? +

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

Can I rate-limit apex_execute? +

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

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

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