Medium Risk

update-item

Update an item in Rollbar (status, level, title, assignment, etc.)

How to control update-item ↓

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

Medium Risk

An AI agent can call update-item faster than any human can review — one bad instruction and it creates or modifies resources in Rollbar MCP Server by the hundred, each call as confident as the last.

Documented attack patterns abuse exactly the kind of access update-item gives an agent:

PolicyLayer is an MCP gateway — it sits between your AI agents and Rollbar MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for update-item:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "update-item": {
      "limits": [
        {
          "counter": "update-item_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

update-item 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.

  1. Create a free account and register Rollbar MCP Server — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
LIMIT THIS TOOL →

Free to start. No card required.

Go deeper

What does the update-item tool do? +

Update an item in Rollbar (status, level, title, assignment, etc.). It is categorised as a Write tool in the Rollbar 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-item? +

Register the Rollbar MCP Server MCP server in PolicyLayer and add a rule for update-item: 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 Rollbar MCP Server. Nothing to install.

What risk level is update-item? +

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

Can I rate-limit update-item? +

Yes. Add a rate_limit block to the update-item 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-item completely? +

Set action: deny in the PolicyLayer policy for update-item. 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-item? +

update-item is provided by the Rollbar MCP Server MCP server (rollbar/rollbar-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Rollbar MCP Server tool call.

Deterministic rules across all 8 Rollbar MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

Free to start. No card required.

8 Rollbar MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.

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