slo_calculate_budget

Calculate error budget

SERVERPlugin Hub SOURCE@barnburner121/plugin-hub-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/barnburner121-plugin-hub-mcp/slo-calculate-budget.md

WHAT IT DOES

What slo_calculate_budget does on Plugin Hub

AI agents use slo_calculate_budget to create or update resources in Plugin Hub, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Plugin Hub environment.

RISK

Why slo_calculate_budget is rated Medium

An AI agent can call slo_calculate_budget faster than any human can review: one bad instruction and it creates or modifies resources in Plugin Hub by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs slo_calculate_budget safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Plugin Hub, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For slo_calculate_budget, this is the rule to start with:

slo_calculate_budget Rate-limited

slo_calculate_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": {
    "slo_calculate_budget": {
      "limits": [
        {
          "counter": "slo_calculate_budget_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Plugin Hub, apply this rule, and every slo_calculate_budget call is checked against it from then on.

FAQ

Questions about slo_calculate_budget

What does the slo_calculate_budget tool do? +

Calculate error budget. It is categorised as a Write tool in the Plugin Hub MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on slo_calculate_budget? +

Register the Plugin Hub MCP server in PolicyLayer and add a rule for slo_calculate_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 Plugin Hub. Nothing to install.

What risk level is slo_calculate_budget? +

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

Can I rate-limit slo_calculate_budget? +

Yes. Add a rate_limit block to the slo_calculate_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 slo_calculate_budget completely? +

Set action: deny in the PolicyLayer policy for slo_calculate_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 slo_calculate_budget? +

slo_calculate_budget is provided by the Plugin Hub MCP server (@barnburner121/plugin-hub-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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