# call_rpc Call an RPC export from a loaded script. Agent View of the PolicyLayer registry record for `call_rpc`. HTML page: https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/call-rpc ## Facts - Tool: `call_rpc` - Server: Frida Game Hacking MCP (`0xhackerfren/frida-game-hacking-mcp`) — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp.md - Homepage: https://github.com/0xhackerfren/frida-game-hacking-mcp - Risk category: Execute (High risk) - Registry record: grade F, identity unverified - Server rate-limited: no - Parameters: 0 - Recommended policy verdict: Rate-limited ## Example call (MCP tools/call, JSON-RPC 2.0) ```json { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "call_rpc", "arguments": {} } } ``` ## Why call_rpc is rated High This tool executes RPC calls into scripts loaded within a target process via Frida. In a game hacking/reverse engineering context, this enables arbitrary code execution within the target process. The effects depend entirely on the loaded script and RPC function being called, which could range from reading memory to injecting code or modifying game state. From the tool's own definition: "Call an RPC export from a loaded script" ## Use case AI agents invoke call_rpc to trigger actions in Frida Game Hacking MCP. 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. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Frida Game Hacking MCP: ```json { "version": "1", "default": "deny", "tools": { "call_rpc": { "limits": [ { "counter": "call_rpc_rate", "window": "minute", "max": 10, "scope": "grant" } ] } } } ``` ## Other tools on Frida Game Hacking MCP (41) - `clear_scan` — Destructive — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/clear-scan.md - `attach` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/attach.md - `detach` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/detach.md - `focus_window` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/focus-window.md - `hook_function` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/hook-function.md - `hook_native_function` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/hook-native-function.md - `intercept_module_function` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/intercept-module-function.md - `load_script` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/load-script.md - `remove_breakpoint` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/remove-breakpoint.md - `replace_function` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/replace-function.md - `resume` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/resume.md - `send_key_to_window` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/send-key-to-window.md - `set_breakpoint` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/set-breakpoint.md - `spawn` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/spawn.md - `unload_script` — Execute — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/unload-script.md - `check_installation` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/check-installation.md - `get_documentation` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/get-documentation.md - `get_module_exports` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/get-module-exports.md - `get_module_imports` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/get-module-imports.md - `get_module_info` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/get-module-info.md - `get_scan_results` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/get-scan-results.md - `get_session_info` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/get-session-info.md - `list_breakpoints` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/list-breakpoints.md - `list_capabilities` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/list-capabilities.md - `list_hooks` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/list-hooks.md - `list_memory_regions` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/list-memory-regions.md - `list_modules` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/list-modules.md - `list_processes` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/list-processes.md - `list_windows` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/list-windows.md - `read_memory` — Read — https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp/read-memory.md - …and 11 more: https://policylayer.com/tools/0xhackerfren-frida-game-hacking-mcp.md ## For agents This record is a snapshot. Live verdicts and the full registry: - Check every server in your MCP config at once: `npx -y policylayer stack` - Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md) - Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events` --- Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=0xhackerfren-frida-game-hacking-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/0xhackerfren-frida-game-hacking-mcp