mongo-update-document · MCP Server Boilerplate MCP

WHAT IT DOES

What mongo-update-document does on MCP Server Boilerplate

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

WHY IT NEEDS A POLICY

Why mongo-update-document needs a policy

This tool creates or modifies data reversibly in MongoDB. While updates can be undone (unlike deletions), they directly alter existing records. Severity is high because an AI agent misusing this tool could corrupt, overwrite, or modify critical application data across multiple documents, potentially affecting production systems. The tool operates on a database level with broad impact potential.

From the tool's definition Tool name is 'mongo-update-document' and description states 'Update documents in a MongoDB collection' — explicitly modifies data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

mongo-update-document Rate-limited

mongo-update-document 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": {
    "mongo-update-document": {
      "limits": [
        {
          "counter": "mongo-update-document_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 MCP Server Boilerplate, so you can run agents against it safely.

FAQ

Questions about mongo-update-document

What does the mongo-update-document tool do? +

Update documents in a MongoDB collection. It is categorised as a Write tool in the MCP Server Boilerplate MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on mongo-update-document? +

Register the MCP Server Boilerplate MCP server in PolicyLayer and add a rule for mongo-update-document: 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 MCP Server Boilerplate. Nothing to install.

What risk level is mongo-update-document? +

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

Can I rate-limit mongo-update-document? +

Yes. Add a rate_limit block to the mongo-update-document 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 mongo-update-document completely? +

Set action: deny in the PolicyLayer policy for mongo-update-document. 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 mongo-update-document? +

mongo-update-document is provided by the MCP Server Boilerplate MCP server (ricleedo/mongo-boilerplate-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.