Get the current PAC (Proxy Auto-Configuration) file content
AI agents call proxy_get_pac_file to retrieve information from Web Proxy MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves the PAC (Proxy Auto-Configuration) file, which is configuration data used to determine proxy behavior. The 'get' operation is read-only with no side effects, no code execution, and no data modification. Even if an AI agent retrieves this configuration, the worst-case scenario is information disclosure about proxy routing rules, which poses only low risk.
From the tool's definition Tool name contains 'get' and description states 'Get the current PAC file content' — a pure retrieval operation with no modification or execution.
Attacks that exploit this kind of access
Get the current PAC (Proxy Auto-Configuration) file content. It is categorised as a Read tool in the Web Proxy MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Web Proxy MCP Server MCP server in PolicyLayer and add a rule for proxy_get_pac_file: 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 Web Proxy MCP Server. Nothing to install.
proxy_get_pac_file 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 proxy_get_pac_file 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 proxy_get_pac_file. 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.
proxy_get_pac_file is provided by the Web Proxy MCP Server MCP server (mako10k/mcp-web-proxy). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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