List available Gamma themes. Call this FIRST when user wants to apply corporate/custom branding.
AI agents call gamma_list_themes to retrieve information from Apple Shortcuts without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays a list of available themes from Gamma (a presentation/design platform). The verb 'list' is explicitly a Read operation—it queries data without modifying, creating, or deleting anything. The instruction to 'call this FIRST' suggests it's a preparatory step before applying themes, but the tool itself only reads.
From the tool's definition Tool name 'gamma_list_themes' and description 'List available Gamma themes' indicate a query/retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access gamma_list_themes gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Apple Shortcuts, and nothing reaches the server without passing your rules. This is the rule we recommend for gamma_list_themes:
{
"version": "1",
"default": "deny",
"tools": {
"gamma_list_themes": {}
}
}gamma_list_themes is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
List available Gamma themes. Call this FIRST when user wants to apply corporate/custom branding. It is categorised as a Read tool in the Apple Shortcuts MCP Server, which means it retrieves data without modifying state.
Register the Apple Shortcuts MCP server in PolicyLayer and add a rule for gamma_list_themes: 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 Apple Shortcuts. Nothing to install.
gamma_list_themes 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 gamma_list_themes 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 gamma_list_themes. 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.
gamma_list_themes is provided by the Apple Shortcuts MCP server (@mindstone/mcp-server-apple-shortcuts). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Apple Shortcuts, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
423 Apple Shortcuts tools catalogued and risk-classified — across an index of 43,000+ MCP servers.