openid_connect_token · Slack MCP: Risk & Policy

WHAT IT DOES

What openid_connect_token does on Slack

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

WHY IT NEEDS A POLICY

Why openid_connect_token needs a policy

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

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

openid_connect_token Rate-limited

openid_connect_token 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": {
    "openid_connect_token": {
      "limits": [
        {
          "counter": "openid_connect_token_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 Slack, so you can run agents against it safely.

FAQ

Questions about openid_connect_token

What does the openid_connect_token tool do? +

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

How do I enforce a policy on openid_connect_token? +

Register the Slack MCP server in PolicyLayer and add a rule for openid_connect_token: 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 Slack. Nothing to install.

What risk level is openid_connect_token? +

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

Can I rate-limit openid_connect_token? +

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

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

openid_connect_token is provided by the Slack MCP server (karbassi/slack-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.