Ask a question using RAG (Retrieval-Augmented Generation). Retrieves relevant context from memory and synthesizes an answer. Requires LLM configuration in llm.toml. Modes: - hybrid: Combined lexical + semantic retrieval - lex: Lexical retrieval only - sem: Semantic retrieval only Args: file: Path...
AI agents call memvid_ask to retrieve information from Memvid without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
memvid_ask performs read-only operations on memory files. It retrieves and searches existing data without creating, modifying, deleting, or executing any code. The RAG (Retrieval-Augmented Generation) pattern used here is fundamentally a query mechanism that synthesizes answers from retrieved context. No reversible or irreversible modifications are made to the underlying memory files.
From the tool's definition Tool description explicitly states it "Retrieves relevant context from memory and synthesizes an answer." The modes listed (hybrid, lexical, semantic) and parameters (file path, question, top_k, context_only) all indicate retrieval and querying operations…
Attacks that exploit this kind of access
Ask a question using RAG (Retrieval-Augmented Generation). Retrieves relevant context from memory and synthesizes an answer. Requires LLM configuration in llm.toml. Modes: - hybrid: Combined lexical + semantic retrieval - lex: Lexical retrieval only - sem: Semantic retrieval only Args: file: Path to the .mv2 memory file question: Question to ask top_k: Number of context documents to retrieve context_only: Return only retrieved context (no synthesis) mode: Retrieval mode Returns: {. It is categorised as a Read tool in the Memvid MCP Server, which means it retrieves data without modifying state.
Register the Memvid MCP server in PolicyLayer and add a rule for memvid_ask: 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 Memvid. Nothing to install.
memvid_ask 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 memvid_ask 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 memvid_ask. 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.
memvid_ask is provided by the Memvid MCP server (tapiocapioca/memvid-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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