vector-store-file-add

WHAT IT DOES

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

AI agents use vector-store-file-add to create or update resources in Universal OpenAI Vector Store MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Universal OpenAI Vector Store MCP Server environment.

THE RISK

Medium Risk

Why vector-store-file-add needs a policy

This tool modifies the state of a vector store by adding file references to it. While reversible (files can be removed via sibling tools like 'vector-store-file-batch-cancel'), it creates new associations and changes the composition of the vector database.

From the tool's definition Tool name 'vector-store-file-add' and description 'Add an existing file to a vector store' indicate creation/modification of vector store contents through file association.

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

POLICY

How to control vector-store-file-add

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-file-add:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "vector-store-file-add": {
      "limits": [
        {
          "counter": "vector-store-file-add_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

vector-store-file-add stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. 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.

LIMIT THIS TOOL →

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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-batch-create Create a file batch for a vector store

All 21 Universal OpenAI Vector Store MCP Server tools →

Write 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.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about vector-store-file-add

What does the vector-store-file-add tool do? +

Add an existing file to a vector store. It is categorised as a Write tool in the Universal OpenAI Vector Store MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

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

Register the Universal OpenAI Vector Store MCP Server MCP server in PolicyLayer and add a rule for vector-store-file-add: 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-file-add? +

vector-store-file-add is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit vector-store-file-add? +

Yes. Add a rate_limit block to the vector-store-file-add 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-file-add completely? +

Set action: deny in the PolicyLayer policy for vector-store-file-add. 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-file-add? +

vector-store-file-add 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.

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