Search through your lifelogs using hybrid search (semantic + keyword). Supports natural language queries like \
AI agents call search_lifelogs to retrieve information from Limitless MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool queries and retrieves lifelog data without creating, modifying, or deleting anything. It is a search function that returns results based on input queries, characteristic of Read operations. The data returned is personal to the authenticated user, but the action itself is non-destructive and has minimal blast radius even if misused by an AI agent (worst case: exposure of user's own lifelogs).
From the tool's definition Tool performs 'search through your lifelogs' with 'hybrid search (semantic + keyword)' and supports 'natural language queries'. These are retrieval operations with no modification or destructive capabilities.
Documented attack patterns abuse exactly the kind of access search_lifelogs gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Limitless MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for search_lifelogs:
{
"version": "1",
"default": "deny",
"tools": {
"search_lifelogs": {}
}
}search_lifelogs is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Search through your lifelogs using hybrid search (semantic + keyword). Supports natural language queries like \. It is categorised as a Read tool in the Limitless MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Limitless MCP Server MCP server in PolicyLayer and add a rule for search_lifelogs: 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 Limitless MCP Server. Nothing to install.
search_lifelogs 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_lifelogs 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_lifelogs. 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_lifelogs is provided by the Limitless MCP Server MCP server (maplehilllabs/mcp-limitless). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Limitless MCP Server, 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.
3 Limitless MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.