execute_section_by_index

THE RISK

High Risk

Why execute_section_by_index needs a policy

This tool executes code sections in MATLAB by index reference. Execution of user-supplied or attacker-controlled code sections can trigger arbitrary MATLAB operations (calculations, file I/O, external command invocation via MATLAB functions).

From the tool's definition Tool name 'execute_section_by_index' combined with sibling tool 'execute_section' and server description stating it 'Enables interactive MATLAB development by allowing users to execute scripts and specific code sections' via 'MATLAB Python Engine.' The…

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

POLICY

How to control execute_section_by_index

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

policy.json

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

execute_section_by_index 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 MATLAB MCP Tool — 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

More MATLAB MCP Tool tools

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All 15 MATLAB MCP Tool tools →

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Go deeper

High-risk tools in MATLAB MCP Tool → 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 execute_section_by_index

What does the execute_section_by_index tool do? +

execute_section_by_index. It is categorised as a Execute tool in the MATLAB MCP Tool MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on execute_section_by_index? +

Register the MATLAB MCP Tool MCP server in PolicyLayer and add a rule for execute_section_by_index: 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 MATLAB MCP Tool. Nothing to install.

What risk level is execute_section_by_index? +

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

Can I rate-limit execute_section_by_index? +

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

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

execute_section_by_index is provided by the MATLAB MCP Tool MCP server (neuromechanist/matlab-mcp-tools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every MATLAB MCP Tool tool call.

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

CHECK YOUR STACK →