upsert_stage · BotUyo MCP Server MCP: Risk & Policy

WHAT IT DOES

What upsert_stage does on BotUyo MCP Server

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

WHY IT NEEDS A POLICY

Why upsert_stage needs a policy

The 'upsert' pattern (update-or-insert) and description confirm this tool creates or modifies agent stages, which are configuration entities. This is a Write operation because changes are reversible—stages can be updated again or deleted.

From the tool's definition Tool name 'upsert_stage' and description 'Create or update a named stage in an agent' explicitly indicate reversible modification of agent configuration data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

upsert_stage Rate-limited

upsert_stage 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": {
    "upsert_stage": {
      "limits": [
        {
          "counter": "upsert_stage_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches BotUyo MCP Server, so you can run agents against it safely.

FAQ

Questions about upsert_stage

What does the upsert_stage tool do? +

Create or update a named stage in an agent. It is categorised as a Write tool in the BotUyo MCP 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 upsert_stage? +

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

What risk level is upsert_stage? +

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

Can I rate-limit upsert_stage? +

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

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

upsert_stage is provided by the BotUyo MCP Server MCP server (marcoar1/botuyo-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.