Search episodic memory for similar past experiences using vector similarity.
AI agents call episodic_search to retrieve information from MidOS - MCP Community Library without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool searches and retrieves data from episodic memory using vector similarity—a read-only operation. It does not create, modify, delete, execute code, or cause financial changes. The blast radius of misuse is minimal; an agent could retrieve irrelevant or sensitive past experiences, but cannot alter state or trigger external operations.
From the tool's definition Tool name 'episodic_search' and description 'Search episodic memory for similar past experiences using vector similarity' indicate a query/retrieval operation with no side effects.
Attacks that exploit this kind of access
Search episodic memory for similar past experiences using vector similarity. It is categorised as a Read tool in the MidOS - MCP Community Library MCP Server, which means it retrieves data without modifying state.
Register the MidOS - MCP Community Library MCP server in PolicyLayer and add a rule for episodic_search: 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 MidOS - MCP Community Library. Nothing to install.
episodic_search 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 episodic_search 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 episodic_search. 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.
episodic_search is provided by the MidOS - MCP Community Library MCP server (midos-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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