Gets the source code of a JavaScript script by its script ID. Supports line range (for normal files) or character offset (for minified single-line files). Use list_scripts first to find the script ID.
AI agents call get_script_source to retrieve information from JS Reverse Strong MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs read-only data retrieval of JavaScript source code. It has no side effects on the runtime, does not modify or delete code, does not execute operations, and does not affect system state. The only potential concern is information disclosure if sensitive code is exposed, but that is a low-severity consequence when the tool itself performs no destructive or executable actions.
From the tool's definition Retrieves source code of JavaScript scripts by ID with optional line/character ranges. Explicitly a getter function ('Gets the source code') with no modification, deletion, or execution capability.
Documented attack patterns abuse exactly the kind of access get_script_source gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and JS Reverse Strong MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for get_script_source:
{
"version": "1",
"default": "deny",
"tools": {
"get_script_source": {}
}
}get_script_source is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Gets the source code of a JavaScript script by its script ID. Supports line range (for normal files) or character offset (for minified single-line files). Use list_scripts first to find the script ID. It is categorised as a Read tool in the JS Reverse Strong MCP MCP Server, which means it retrieves data without modifying state.
Register the JS Reverse Strong MCP server in PolicyLayer and add a rule for get_script_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 JS Reverse Strong MCP. Nothing to install.
get_script_source is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_script_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.
Set action: deny in the PolicyLayer policy for get_script_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.
get_script_source is provided by the JS Reverse Strong MCP server (lwjjike/jsreverser-strong-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from JS Reverse Strong MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
85 JS Reverse Strong MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.