REQUIRED for finding previously analyzed ad media (images and videos) in cache. Use this tool when users want to search for cached media by brand name, find media with people, search by colors, or filter by media type. Essential for retrieving past analysis results without re-downloading media.
AI agents call search_cached_media to retrieve information from Facebook Ads Library MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool performs searches and retrieval of cached data without side effects. It retrieves previously stored analysis results from a local cache rather than creating, modifying, or destroying data, and does not execute arbitrary code or trigger external operations. This is a pure read operation with minimal blast radius if misused.
From the tool's definition Tool description states it is used for 'finding previously analyzed ad media', 'retrieving past analysis results', and 'search for cached media' — all read-only retrieval operations with no data modification, deletion, or execution of external commands.
Attacks that exploit this kind of access
REQUIRED for finding previously analyzed ad media (images and videos) in cache. Use this tool when users want to search for cached media by brand name, find media with people, search by colors, or filter by media type. Essential for retrieving past analysis results without re-downloading media. It is categorised as a Read tool in the Facebook Ads Library MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Facebook Ads Library MCP Server MCP server in PolicyLayer and add a rule for search_cached_media: 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 Facebook Ads Library MCP Server. Nothing to install.
search_cached_media 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_cached_media 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_cached_media. 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_cached_media is provided by the Facebook Ads Library MCP Server MCP server (proxy-intell/facebook-ads-library-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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