# signal_add_user_signal Declare a new user signal on a node (undoable). Optional typed arguments. Errors if the signal already exists. Agent View of the PolicyLayer registry record for `signal_add_user_signal`. HTML page: https://policylayer.com/tools/godot-breakpoint-mcp/signal-add-user-signal ## Facts - Tool: `signal_add_user_signal` - Server: Godot Breakpoint (`jlivingston-Cipher/godot-breakpoint-mcp`) — https://policylayer.com/tools/godot-breakpoint-mcp.md - Homepage: https://github.com/jlivingston-Cipher/godot-breakpoint-mcp - Risk category: Write (Medium 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": "signal_add_user_signal", "arguments": {} } } ``` ## Why signal_add_user_signal is rated Medium This tool creates/declares a new signal on a node, which is a modification to the node's structure and metadata. While it changes state, it is explicitly marked as undoable (reversible), and does not delete, execute arbitrary code, move money, or query data. This places it firmly in Write category (create operation). From the tool's own definition: "Tool description states it 'Declare a new user signal on a node (undoable)' - a create operation that modifies the node's signal definitions. The (undoable) note confirms reversibility, distinguishing this from Destructive actions." ## Use case AI agents use signal_add_user_signal to create or update resources in Godot Breakpoint, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Godot Breakpoint environment. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Godot Breakpoint: ```json { "version": "1", "default": "deny", "tools": { "signal_add_user_signal": { "limits": [ { "counter": "signal_add_user_signal_rate", "window": "minute", "max": 30, "scope": "grant" } ] } } } ``` ## Other tools on Godot Breakpoint (238) - `anim_delete` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/anim-delete.md - `anim_remove_key` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/anim-remove-key.md - `cs_rename` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/cs-rename.md - `filesystem_move` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/filesystem-move.md - `inputmap_erase_action` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/inputmap-erase-action.md - `node_delete` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/node-delete.md - `project_remove_autoload` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/project-remove-autoload.md - `scene_close` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/scene-close.md - `scene_reload` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/scene-reload.md - `shader_set_code` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/shader-set-code.md - `tilemap_clear` — Destructive — https://policylayer.com/tools/godot-breakpoint-mcp/tilemap-clear.md - `cs_dbg_attach` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/cs-dbg-attach.md - `cs_dbg_continue` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/cs-dbg-continue.md - `cs_dbg_evaluate` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/cs-dbg-evaluate.md - `cs_dbg_launch` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/cs-dbg-launch.md - `cs_dbg_restart` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/cs-dbg-restart.md - `cs_dbg_set_exception_breakpoints` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/cs-dbg-set-exception-breakpoints.md - `cs_dbg_step` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/cs-dbg-step.md - `dbg_attach` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/dbg-attach.md - `dbg_continue` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/dbg-continue.md - `dbg_evaluate` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/dbg-evaluate.md - `dbg_goto` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/dbg-goto.md - `dbg_launch` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/dbg-launch.md - `dbg_restart` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/dbg-restart.md - `dbg_set_exception_breakpoints` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/dbg-set-exception-breakpoints.md - `dbg_set_variable` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/dbg-set-variable.md - `dbg_step` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/dbg-step.md - `filesystem_scan` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/filesystem-scan.md - `godot_launch_editor` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/godot-launch-editor.md - `godot_run_managed` — Execute — https://policylayer.com/tools/godot-breakpoint-mcp/godot-run-managed.md - …and 208 more: https://policylayer.com/tools/godot-breakpoint-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=godot-breakpoint-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/godot-breakpoint-mcp