add_files_to_matter_batch · Smokeball MCP: Risk & Policy

WHAT IT DOES

What add_files_to_matter_batch does on Smokeball

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

WHY IT NEEDS A POLICY

Why add_files_to_matter_batch needs a policy

This tool creates or modifies matter-file associations without deleting or executing arbitrary code. It's a Write operation because it adds data relationships reversibly. Severity is medium because bulk file additions could clutter matters or create compliance/audit issues if misused at scale, but the action is reversible (files can be removed).

From the tool's definition Tool description states 'Add multiple files to a matter' — a write operation that creates associations between files and matters. The batch parameter and CSV format indicate it modifies data structure reversibly.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_files_to_matter_batch Rate-limited

add_files_to_matter_batch 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": {
    "add_files_to_matter_batch": {
      "limits": [
        {
          "counter": "add_files_to_matter_batch_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 Smokeball, so you can run agents against it safely.

FAQ

Questions about add_files_to_matter_batch

What does the add_files_to_matter_batch tool do? +

Add multiple files to a matter in one request. files_csv: comma-separated file names. It is categorised as a Write tool in the Smokeball MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on add_files_to_matter_batch? +

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

What risk level is add_files_to_matter_batch? +

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

Can I rate-limit add_files_to_matter_batch? +

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

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

add_files_to_matter_batch is provided by the Smokeball MCP server (rosenadvertising/smokeball-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.