birst_create_join · Infor Birst MCP Server MCP

WHAT IT DOES

What birst_create_join does on Infor Birst MCP Server

AI agents use birst_create_join 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_create_join needs a policy

Creating a join establishes a new relationship between data sources in the analytics platform, which modifies the data model configuration. This is reversible (can be deleted via birst_delete_join), making it a Write operation rather than Destructive.

From the tool's definition Tool name 'birst_create_join' and description explicitly states 'Create a join (relationship) between two sources' - the verb 'Create' indicates data structure modification.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

birst_create_join Rate-limited

birst_create_join 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_create_join": {
      "limits": [
        {
          "counter": "birst_create_join_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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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_create_join

What does the birst_create_join tool do? +

Create a join (relationship) between two sources in a Birst space. Supports simple column-based joins and advanced logical joins. 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_create_join? +

Register the Infor Birst MCP Server MCP server in PolicyLayer and add a rule for birst_create_join: 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_create_join? +

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

Can I rate-limit birst_create_join? +

Yes. Add a rate_limit block to the birst_create_join 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_create_join completely? +

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

birst_create_join 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.