Search stored facts in Via memory.
AI agents call via_memory_search to retrieve information from Via without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only search operation on stored memory facts. It retrieves and queries existing data without creating, modifying, deleting, or executing anything. The verb 'search' and the context of retrieving facts from memory clearly indicate a Read category tool with minimal security risk.
From the tool's definition Tool name 'via_memory_search' and description 'Search stored facts in Via memory' indicate a query operation that retrieves data without modification or side effects.
Documented attack patterns abuse exactly the kind of access via_memory_search gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Via, and nothing reaches the server without passing your rules. This is the rule we recommend for via_memory_search:
{
"version": "1",
"default": "deny",
"tools": {
"via_memory_search": {}
}
}via_memory_search is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Search stored facts in Via memory. It is categorised as a Read tool in the Via MCP Server, which means it retrieves data without modifying state.
Register the Via MCP server in PolicyLayer and add a rule for via_memory_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 Via. Nothing to install.
via_memory_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 via_memory_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 via_memory_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.
via_memory_search is provided by the Via MCP server (vektor-memory/via). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Via, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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8 Via tools catalogued and risk-classified — across an index of 43,000+ MCP servers.