product_update · Database MCP Server MCP: Risk & Policy

WHAT IT DOES

What product_update does on Database MCP Server

AI agents use product_update to create or update resources in Database MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Database MCP Server environment.

WHY IT NEEDS A POLICY

Why product_update needs a policy

The tool allows modification of product records (price, stock, or name), which is a Write operation. Severity is medium because: (1) changes are reversible via additional update calls, (2) the tool is scoped to single fields of products rather than bulk operations, (3) the server description indicates 'parameterized queries' and security controls are in place.

From the tool's definition Tool name is 'product_update' and description states it updates 'a single field of a product by name (price, stock, name)'. This is a reversible modification operation that creates or modifies data without permanently deleting it.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

product_update Rate-limited

product_update 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "product_update": {
      "limits": [
        {
          "counter": "product_update_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Database MCP Server, so you can run agents against it safely.

FAQ

Questions about product_update

What does the product_update tool do? +

Update a single field of a product by name (price, stock, name). It is categorised as a Write tool in the Database 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 product_update? +

Register the Database MCP Server MCP server in PolicyLayer and add a rule for product_update: 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 Database MCP Server. Nothing to install.

What risk level is product_update? +

product_update is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit product_update? +

Yes. Add a rate_limit block to the product_update 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 product_update completely? +

Set action: deny in the PolicyLayer policy for product_update. 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 product_update? +

product_update is provided by the Database MCP Server MCP server (vrushil1/database-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.