Handle escalation to user input when iteration limits reached or checkpoints triggered
AI agents call user_input_required_guidance as a supporting operation in Structured Workflow MCP workflows.
This tool provides guidance/workflow orchestration for escalating to user input at checkpoints or iteration limits. It doesn't read data, write/modify data, execute code, destroy data, or move money. It's a workflow control mechanism that prompts for human intervention, fitting 'Other' as it manages process flow rather than performing data operations.
From the tool's definition Handle escalation to user input when iteration limits reached or checkpoints triggered
Documented attack patterns abuse exactly the kind of access user_input_required_guidance gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Structured Workflow MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for user_input_required_guidance:
{
"version": "1",
"default": "deny",
"tools": {
"user_input_required_guidance": {
"limits": [
{
"counter": "user_input_required_guidance_rate",
"window": "minute",
"max": 60,
"scope": "grant"
}
]
}
}
} user_input_required_guidance gets a rate cap, and everything else on the server is denied unless you say otherwise.
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Handle escalation to user input when iteration limits reached or checkpoints triggered. It is categorised as a Other tool in the Structured Workflow MCP MCP Server, which means it performs auxiliary operations.
Register the Structured Workflow MCP server in PolicyLayer and add a rule for user_input_required_guidance: 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 Structured Workflow MCP. Nothing to install.
user_input_required_guidance is a Other tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the user_input_required_guidance 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 user_input_required_guidance. 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.
user_input_required_guidance is provided by the Structured Workflow MCP server (kingdomseed/structured-workflow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Structured Workflow MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
20 Structured Workflow MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.