begin_task_run_transaction · Todos MCP: Risk & Policy

WHAT IT DOES

What begin_task_run_transaction does on Todos

AI agents invoke begin_task_run_transaction to trigger actions in Todos. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why begin_task_run_transaction needs a policy

The tool can 'apply' a transaction (not just preview), which triggers an external operation or state change in a task management system. 'Transaction' and 'apply' indicate execution of state-changing logic. It is not purely destructive or financial, but it executes a run transaction that modifies system state.

From the tool's definition 'Preview or apply an idempotent local loop run transaction keyed by a stable loop/run id'

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

begin_task_run_transaction Rate-limited

begin_task_run_transaction stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "begin_task_run_transaction": {
      "limits": [
        {
          "counter": "begin_task_run_transaction_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about begin_task_run_transaction

What does the begin_task_run_transaction tool do? +

Preview or apply an idempotent local loop run transaction keyed by a stable loop/run id. It is categorised as a Execute tool in the Todos MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on begin_task_run_transaction? +

Register the Todos MCP server in PolicyLayer and add a rule for begin_task_run_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 Todos. Nothing to install.

What risk level is begin_task_run_transaction? +

begin_task_run_transaction is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit begin_task_run_transaction? +

Yes. Add a rate_limit block to the begin_task_run_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 begin_task_run_transaction completely? +

Set action: deny in the PolicyLayer policy for begin_task_run_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 begin_task_run_transaction? +

begin_task_run_transaction is provided by the Todos MCP server (@hasna/todos). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.