prompt_token_budget · MCP SAPUI5 Server MCP: Risk & Policy

WHAT IT DOES

What prompt_token_budget does on MCP SAPUI5 Server

AI agents use prompt_token_budget to create or update resources in MCP SAPUI5 Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your MCP SAPUI5 Server environment.

WHY IT NEEDS A POLICY

Why prompt_token_budget needs a policy

An AI agent can call prompt_token_budget faster than any human can review — one bad instruction and it creates or modifies resources in MCP SAPUI5 Server by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

prompt_token_budget Rate-limited

prompt_token_budget 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": {
    "prompt_token_budget": {
      "limits": [
        {
          "counter": "prompt_token_budget_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 SAPUI5 Server, so you can run agents against it safely.

FAQ

Questions about prompt_token_budget

What does the prompt_token_budget tool do? +

Optimize prompt size against a token budget and prioritize context files to minimize unnecessary token consumption. It is categorised as a Write tool in the MCP SAPUI5 Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on prompt_token_budget? +

Register the MCP SAPUI5 Server MCP server in PolicyLayer and add a rule for prompt_token_budget: 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 SAPUI5 Server. Nothing to install.

What risk level is prompt_token_budget? +

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

Can I rate-limit prompt_token_budget? +

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

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

prompt_token_budget is provided by the MCP SAPUI5 Server MCP server (santiagosanmartinn/mcpui5server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.