db_rollback_transaction · MCP Toolkit MCP: Risk & Policy

WHAT IT DOES

What db_rollback_transaction does on MCP Toolkit

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

WHY IT NEEDS A POLICY

Why db_rollback_transaction needs a policy

A rollback undoes pending uncommitted changes within a transaction, reverting the database to its prior state. This is a reversible operation (it cancels changes that haven't been committed yet) and falls under Write rather than Destructive, since it is specifically designed to undo modifications rather than permanently delete data. Misuse could disrupt ongoing transactions but the blast radius is moderate.

From the tool's definition 回滚数据库事务...取消事务中的所有更改 (Rollback database transaction... cancel all changes in the transaction)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

db_rollback_transaction Rate-limited

db_rollback_transaction 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": {
    "db_rollback_transaction": {
      "limits": [
        {
          "counter": "db_rollback_transaction_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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

FAQ

Questions about db_rollback_transaction

What does the db_rollback_transaction tool do? +

回滚数据库事务。当发生错误或需要撤销更改时，我会使用此工具来取消事务中的所有更改。. It is categorised as a Write tool in the MCP Toolkit MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on db_rollback_transaction? +

Register the MCP Toolkit MCP server in PolicyLayer and add a rule for db_rollback_transaction: 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 Toolkit. Nothing to install.

What risk level is db_rollback_transaction? +

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

Can I rate-limit db_rollback_transaction? +

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

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

db_rollback_transaction is provided by the MCP Toolkit MCP server (zxfgds/mcp-toolkit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.