begin_task
开始一个限流观测任务区间，返回 taskId。长任务开始前调用，结束后用 end_task 取复盘报告（用时/调用次数/原定用时/第几轮并发会超时）。
This record as markdown: /tools/429-throttle-mcp/begin-task.md
What begin_task does on 429 Throttle
AI agents call begin_task to retrieve information from 429 Throttle without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why begin_task is rated Low
Even though begin_task only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
The rule that runs begin_task safely
PolicyLayer is an MCP gateway: it sits between your AI agents and 429 Throttle, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For begin_task, this is the rule to start with:
begin_task is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect 429 Throttle, apply this rule, and every begin_task call is checked against it from then on.
Questions about begin_task
开始一个限流观测任务区间，返回 taskId。长任务开始前调用，结束后用 end_task 取复盘报告（用时/调用次数/原定用时/第几轮并发会超时）。. It is categorised as a Read tool in the 429 Throttle MCP Server, which means it retrieves data without modifying state.
Register the 429 Throttle MCP server in PolicyLayer and add a rule for begin_task: 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 429 Throttle. Nothing to install.
begin_task is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the begin_task 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.
Set action: deny in the PolicyLayer policy for begin_task. 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.
begin_task is provided by the 429 Throttle MCP server (429-throttle-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on 429 Throttle, and thousands of servers like it.
This server
Across the catalogue