update_project_tier · Fuul MCP Server MCP: Risk & Policy

WHAT IT DOES

What update_project_tier does on Fuul MCP Server

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

WHY IT NEEDS A POLICY

Why update_project_tier needs a policy

The tool modifies existing project tier data in an affiliate management system. This is a Write action (reversible change to configuration). Severity is high because tier updates can affect affiliate compensation structures, incentive calculations, and potentially influence financial payouts across the affiliate network.

From the tool's definition Tool name 'update_project_tier' indicates modification of tier configuration within an affiliate program project. Sibling tools like 'create_project_tier' and 'delete_trigger' show this server manages mutable affiliate program structures.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_project_tier Rate-limited

update_project_tier 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": {
    "update_project_tier": {
      "limits": [
        {
          "counter": "update_project_tier_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 Fuul MCP Server, so you can run agents against it safely.

FAQ

Questions about update_project_tier

What does the update_project_tier tool do? +

update_project_tier. It is categorised as a Write tool in the Fuul 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 update_project_tier? +

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

What risk level is update_project_tier? +

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

Can I rate-limit update_project_tier? +

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

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

update_project_tier is provided by the Fuul MCP Server MCP server (kuyen-labs/mcp_server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.