AI agents call cast_list to retrieve information from The Movie DB MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns cast and crew information for a movie. It performs no write, deletion, execution, or financial operations. The blast radius of misuse is negligible — returning cast lists poses no security or operational risk.
From the tool's definition Tool description states 'Show the movie cast list and crew list' — a retrieval operation with no modification or side effects.
Documented attack patterns abuse exactly the kind of access cast_list gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and The Movie DB MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for cast_list:
{
"version": "1",
"default": "deny",
"tools": {
"cast_list": {}
}
}cast_list is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Show the movie cast list and crew list. It is categorised as a Read tool in the The Movie DB MCP Server MCP Server, which means it retrieves data without modifying state.
Register the The Movie DB MCP Server MCP server in PolicyLayer and add a rule for cast_list: 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 The Movie DB MCP Server. Nothing to install.
cast_list 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 cast_list 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 cast_list. 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.
cast_list is provided by the The Movie DB MCP Server MCP server (saturngod/themoviedb-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from The Movie DB MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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5 The Movie DB MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.