Semantic search in podcast subtitles (iTunes, Google Play, etc.)
AI agents call search_subtitles_semantic to retrieve information from ContextForge MCP Gateway without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only reads and searches subtitle content from podcast metadata sources. It has no side effects, does not execute arbitrary code or commands, does not modify data, and does not delete or move money. The semantic search capability is a read-only query operation with minimal blast radius if misused by an AI agent—worst case being retrieval of unexpected subtitle text.
From the tool's definition The tool performs 'Semantic search in podcast subtitles' which is a retrieval operation. It queries existing subtitle data from public podcast platforms (iTunes, Google Play, etc.) without modifying, executing code, deleting, or committing financial…
Attacks that exploit this kind of access
Semantic search in podcast subtitles (iTunes, Google Play, etc.). It is categorised as a Read tool in the ContextForge MCP Gateway MCP Server, which means it retrieves data without modifying state.
Register the ContextForge MCP Gateway MCP server in PolicyLayer and add a rule for search_subtitles_semantic: 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 ContextForge MCP Gateway. Nothing to install.
search_subtitles_semantic 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 search_subtitles_semantic 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 search_subtitles_semantic. 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.
search_subtitles_semantic is provided by the ContextForge MCP Gateway MCP server (jrmatherly/mcp-context-forge). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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