theme_set_font
Set a font entry on a Theme resource file (loading a Font from a res:// path) and save it. DESTRUCTIVE (writes a file) — gated by confirmation.
This record as markdown: /tools/godot-breakpoint-mcp/theme-set-font.md
What theme_set_font does on Godot Breakpoint
AI agents use theme_set_font 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.
Why theme_set_font is rated Medium
Although the description includes the label 'DESTRUCTIVE (writes a file)', the actual operation is reversible: it updates a Theme resource with a new font entry and saves it. This is a modification (Write), not an irreversible deletion or overwrite of existing data. The gating by confirmation reduces severity but does not change the category.
From the tool's definition Description states "Set a font entry on a Theme resource file... and save it" and notes it "writes a file". The tool modifies a resource file by setting a font entry.
Attacks that exploit this kind of access
The rule that runs theme_set_font safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Godot Breakpoint, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For theme_set_font, this is the rule to start with:
theme_set_font stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Godot Breakpoint, apply this rule, and every theme_set_font call is checked against it from then on.
Questions about theme_set_font
Set a font entry on a Theme resource file (loading a Font from a res:// path) and save it. DESTRUCTIVE (writes a file) — gated by confirmation. It is categorised as a Write tool in the Godot Breakpoint MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Godot Breakpoint MCP server in PolicyLayer and add a rule for theme_set_font: 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 Godot Breakpoint. Nothing to install.
theme_set_font is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the theme_set_font 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 theme_set_font. 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.
theme_set_font is provided by the Godot Breakpoint MCP server (jlivingston-Cipher/godot-breakpoint-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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