birst_update_variable · Infor Birst MCP Server MCP

WHAT IT DOES

What birst_update_variable does on Infor Birst MCP Server

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

WHY IT NEEDS A POLICY

Why birst_update_variable needs a policy

This tool modifies an existing variable/parameter within the analytics platform, which is a reversible write operation. The update operation can be undone by reverting to previous values or modifying again. While it affects configuration, it does not delete data (would be Destructive), execute arbitrary code (would be Execute), or move money (would be Financial).

From the tool's definition Tool name 'birst_update_variable' and description 'Update an existing variable (parameter) in a Birst space. Can modify the variable' clearly indicate data modification rather than deletion or retrieval.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

birst_update_variable Rate-limited

birst_update_variable 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": {
    "birst_update_variable": {
      "limits": [
        {
          "counter": "birst_update_variable_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 Infor Birst MCP Server, so you can run agents against it safely.

FAQ

Questions about birst_update_variable

What does the birst_update_variable tool do? +

Update an existing variable (parameter) in a Birst space. Can modify the variable. It is categorised as a Write tool in the Infor Birst 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 birst_update_variable? +

Register the Infor Birst MCP Server MCP server in PolicyLayer and add a rule for birst_update_variable: 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 Infor Birst MCP Server. Nothing to install.

What risk level is birst_update_variable? +

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

Can I rate-limit birst_update_variable? +

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

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

birst_update_variable is provided by the Infor Birst MCP Server MCP server (mikahdev/infor-birst-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.