db_commit_transaction · MCP Toolkit MCP: Risk & Policy

WHAT IT DOES

What db_commit_transaction does on MCP Toolkit

AI agents use db_commit_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_commit_transaction needs a policy

db_commit_transaction finalizes data modifications within a database transaction. While individual write operations (db_query) might be categorized as Write, committing a transaction irreversibly persists those changes. However, the commit itself does not directly delete or destroy data—it confirms prior write operations.

From the tool's definition Tool description states '提交数据库事务。确认事务中的所有更改' which translates to 'Commit database transaction. Confirm all changes in the transaction.' This commits/persists modifications to database data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

db_commit_transaction Rate-limited

db_commit_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_commit_transaction": {
      "limits": [
        {
          "counter": "db_commit_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_commit_transaction

What does the db_commit_transaction tool do? +

提交数据库事务。确认事务中的所有更改。如果事务中有任何操作失败，我会使用 db_rollback_transaction。. 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_commit_transaction? +

Register the MCP Toolkit MCP server in PolicyLayer and add a rule for db_commit_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_commit_transaction? +

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

Can I rate-limit db_commit_transaction? +

Yes. Add a rate_limit block to the db_commit_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_commit_transaction completely? +

Set action: deny in the PolicyLayer policy for db_commit_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_commit_transaction? +

db_commit_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.