brief_add_text · Llama MCP: Risk & Policy

WHAT IT DOES

What brief_add_text does on Llama

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

WHY IT NEEDS A POLICY

Why brief_add_text needs a policy

This tool creates or modifies data (brief content) in a reversible manner. It adds text to an existing deal brief without permanently removing data or executing arbitrary code. The operation can be undone by editing or removing the added text block. While it modifies platform data, the change is non-destructive and reversible, placing it squarely in the Write category.

From the tool's definition Tool description states 'Prepend a markdown text block to a deal brief', which is a content modification operation. The verb 'prepend' indicates adding/inserting data into an existing document.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

brief_add_text Rate-limited

brief_add_text 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": {
    "brief_add_text": {
      "limits": [
        {
          "counter": "brief_add_text_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 Llama, so you can run agents against it safely.

FAQ

Questions about brief_add_text

What does the brief_add_text tool do? +

Prepend a markdown text block to a deal brief. Supports markdown + mermaid diagrams. It is categorised as a Write tool in the Llama MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on brief_add_text? +

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

What risk level is brief_add_text? +

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

Can I rate-limit brief_add_text? +

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

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

brief_add_text is provided by the Llama MCP server (llama-ventures/llama-cli). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.