vector-store-list | PolicyLayer

WHAT IT DOES

What vector-store-list does on Universal OpenAI Vector Store MCP Server

AI agents call vector-store-list to retrieve information from Universal OpenAI Vector Store MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

THE RISK

Low Risk

Why vector-store-list needs a policy

This tool performs a read-only operation that enumerates existing vector stores. It retrieves information from the OpenAI Vector Store API but does not create, modify, delete, or execute any operations. The blast radius is minimal as it only exposes metadata about existing stores without enabling destructive or financial actions. Low severity is appropriate for information disclosure about resource inventory.

From the tool's definition Tool name 'vector-store-list' and description 'List all vector stores' indicate a query operation that retrieves data without modification or side effects.

Documented attack patterns abuse exactly the kind of access vector-store-list gives an agent:

POLICY

How to control vector-store-list

PolicyLayer is an MCP gateway — it sits between your AI agents and Universal OpenAI Vector Store MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for vector-store-list:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "vector-store-list": {}
  }
}

vector-store-list is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Universal OpenAI Vector Store MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Universal OpenAI Vector Store MCP Server tools

Destructive file-delete Permanently delete a file from your OpenAI account. This will remove the file from all vec Destructive vector-store-delete Delete a vector store Destructive vector-store-file-delete Delete a file from a vector store Execute vector-store-file-batch-cancel Cancel a file batch Write file-upload Upload a local file to OpenAI for use with vector stores and assistants. This enables the Write upload-create Create a multipart upload session for large files (>25MB). This enables efficient upload o Write vector-store-create Create a new vector store Write vector-store-file-add Add an existing file to a vector store

All 21 Universal OpenAI Vector Store MCP Server tools →

Read tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about vector-store-list

What does the vector-store-list tool do? +

List all vector stores. It is categorised as a Read tool in the Universal OpenAI Vector Store MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on vector-store-list? +

Register the Universal OpenAI Vector Store MCP Server MCP server in PolicyLayer and add a rule for vector-store-list: 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 Universal OpenAI Vector Store MCP Server. Nothing to install.

What risk level is vector-store-list? +

vector-store-list is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit vector-store-list? +

Yes. Add a rate_limit block to the vector-store-list 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.

How do I block vector-store-list completely? +

Set action: deny in the PolicyLayer policy for vector-store-list. 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.

What MCP server provides vector-store-list? +

vector-store-list is provided by the Universal OpenAI Vector Store MCP Server MCP server (jezweb/openai-vector-assistant-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Universal OpenAI Vector Store MCP Server tool call.

Start from Universal OpenAI Vector Store MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →

Free to start. No card required.

21 Universal OpenAI Vector Store MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.