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.

SERVERBreakpoint SOURCEbreakpoint-mcp

Medium RISK CLASS

Category Write

Parameters 54 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/breakpoint-mcp/theme-set-font.md

WHAT IT DOES

What theme_set_font does on Breakpoint

AI agents use theme_set_font to create or update resources in Breakpoint, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Breakpoint environment.

Parameter	Type	Required	Description
`name`	string	Yes	Theme item name, e.g. font
`path`	string	Yes	Theme res:// path
`confirm`	boolean	—	Auto-approve this destructive action (skip the confirmation prompt)
`font_path`	string	Yes	Font resource res:// path (FontFile / SystemFont / …)
`theme_type`	string	Yes	Theme type the item belongs to, e.g. Button, Label

Parameters from the server's own tool schema.

RISK

Why theme_set_font is rated Medium

This tool modifies and saves a Theme resource file by setting a font entry. Despite the 'DESTRUCTIVE' label in the description, it writes/overwrites a file rather than permanently deleting data — the file can potentially be restored. It is a file write operation, making Write the appropriate category.

From the tool's definition 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.

Risk signalsAccepts file system path (path)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs theme_set_font safely

PolicyLayer is an MCP gateway: it sits between your AI agents and 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 Rate-limited

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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "theme_set_font": {
      "limits": [
        {
          "counter": "theme_set_font_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Breakpoint, apply this rule, and every theme_set_font call is checked against it from then on.

FAQ

Questions about theme_set_font

What does the theme_set_font tool do? +

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 Breakpoint MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does theme_set_font accept? +

theme_set_font accepts 5 parameters: name, path, confirm, font_path, theme_type. Required: name, path, font_path, theme_type. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on theme_set_font? +

Register the 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 Breakpoint. Nothing to install.

What risk level is theme_set_font? +

theme_set_font is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit theme_set_font? +

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.

How do I block theme_set_font completely? +

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.

What MCP server provides theme_set_font? +

theme_set_font is provided by the Breakpoint MCP server (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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