updateFeatureFlag · Bucketeer MCP Server MCP: Risk & Policy

WHAT IT DOES

What updateFeatureFlag does on Bucketeer MCP Server

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

WHY IT NEEDS A POLICY

Why updateFeatureFlag needs a policy

This tool modifies existing feature flag configurations reversibly. It is not destructive (flags are not permanently deleted, only updated), not financial, and not arbitrary code execution—it's a controlled update operation on feature flag state.

From the tool's definition Tool name is 'updateFeatureFlag' and description states 'Update an existing feature flag', indicating modification of existing data. The sibling tools show CRUD patterns (create, retrieve, list, archive) typical of a feature flag management system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

updateFeatureFlag Rate-limited

updateFeatureFlag 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": {
    "updateFeatureFlag": {
      "limits": [
        {
          "counter": "updatefeatureflag_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 Bucketeer MCP Server, so you can run agents against it safely.

FAQ

Questions about updateFeatureFlag

What does the updateFeatureFlag tool do? +

Update an existing feature flag. It is categorised as a Write tool in the Bucketeer 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 updateFeatureFlag? +

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

What risk level is updateFeatureFlag? +

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

Can I rate-limit updateFeatureFlag? +

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

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

updateFeatureFlag is provided by the Bucketeer MCP Server MCP server (nnnkkk7/bucketeer-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.