get_symbol_source

THE RISK

Low Risk

Why get_symbol_source needs a policy

This tool performs only data retrieval of source code that has already been analyzed and deobfuscated by the server. It has no capability to modify, delete, execute, or trigger side effects. The extraction is a read-only operation on static code analysis results.

From the tool's definition Tool description states it 'Extracts specific function/class source code' — a retrieval operation with no modification or execution capability. It reads and returns existing code artifacts from an analyzed JavaScript bundle.

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

POLICY

How to control get_symbol_source

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

policy.json

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

get_symbol_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 Deobfuscate 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.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Deobfuscate MCP Server tools

Read analyze_structure Returns structural summary (AST) of code. Read deobfuscate Unpacks/deobfuscates minified code & caches result. Read format_code Formats code with Prettier. Read get_call_graph Generates a call graph for a specific function. Read get_help Get detailed usage info and examples for a specific tool. Read get_module Gets code for specific module ID from cache. Read list_functions Scans cached modules to list defined functions and classes. Read list_modules Lists modules from cached bundle.

All 10 Deobfuscate MCP Server tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

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 get_symbol_source

What does the get_symbol_source tool do? +

Extracts specific function/class source code. It is categorised as a Read tool in the Deobfuscate MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_symbol_source? +

Register the Deobfuscate MCP Server MCP server in PolicyLayer and add a rule for get_symbol_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 Deobfuscate MCP Server. Nothing to install.

What risk level is get_symbol_source? +

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

Can I rate-limit get_symbol_source? +

Yes. Add a rate_limit block to the get_symbol_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 get_symbol_source completely? +

Set action: deny in the PolicyLayer policy for get_symbol_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 get_symbol_source? +

get_symbol_source is provided by the Deobfuscate MCP Server MCP server (madebytokens/deobfuscate-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 Deobfuscate MCP Server tool call.

Start from Deobfuscate 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 →