Medium Risk

plan_stack

Plan a technology stack with cost-optimized infrastructure choices. Given project requirements, recommends services with free tiers or credits that match your needs. Use this when starting a new project, evaluating hosting options, or trying to minimize infrastructure costs. Call this tool when a...

Part of the AgentDeals server.

plan_stack can modify AgentDeals data, with no limits today. PolicyLayer puts allow, deny, and rate-limit rules on every call. Live in minutes.

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AI agents use plan_stack to create or modify resources in AgentDeals. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.

Without a policy, an AI agent could call plan_stack repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach AgentDeals.

Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "plan_stack": {
      "limits": [
        {
          "counter": "plan_stack_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

See the full AgentDeals policy for all 12 tools.

Get this rule live on your own AgentDeals server in minutes. PolicyLayer enforces it on every call, before it runs.

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These attack patterns abuse exactly the kind of access plan_stack gives an agent. Each links to the full case and the policy that stops it:

Browse the full MCP Attack Database →

Every attack above starts with a tool call. PolicyLayer checks each one against your policy first, so plan_stack only ever does what you allow.

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Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.

What does the plan_stack tool do? +

Plan a technology stack with cost-optimized infrastructure choices. Given project requirements, recommends services with free tiers or credits that match your needs. Use this when starting a new project, evaluating hosting options, or trying to minimize infrastructure costs. Call this tool when a user asks: 'What free tools can I use for a SaaS app?', 'Build me a stack under $50/month'.. It is categorised as a Write tool in the AgentDeals MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on plan_stack? +

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

What risk level is plan_stack? +

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

Can I rate-limit plan_stack? +

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

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

plan_stack is provided by the AgentDeals MCP server (https://agentdeals.dev/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every AgentDeals tool call.

Deterministic rules across all 12 AgentDeals tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

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