sendDmNip44 · Nostr Tools for AI Agents MCP: Risk & Policy

WHAT IT DOES

What sendDmNip44 does on Nostr Tools for AI Agents

AI agents use sendDmNip44 to create or update resources in Nostr Tools for AI Agents — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Nostr Tools for AI Agents environment.

WHY IT NEEDS A POLICY

Why sendDmNip44 needs a policy

This tool creates and sends encrypted direct messages, which is a write operation that modifies state by adding new messages to a distributed system. While not destructive or financial, it has medium severity because an agent could spam, harass, or impersonate users via automated DM sending. The effect is reversible only through protocol-level deletion (deleteEvent), making it Write rather than Execute.

From the tool's definition Tool name 'sendDmNip44' and description 'Send a NIP-44 direct message' indicate creation and transmission of a new message. NIP-44 is a Nostr encrypted messaging standard. The action creates/transmits data that persists on the Nostr network.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

sendDmNip44 Rate-limited

sendDmNip44 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": {
    "sendDmNip44": {
      "limits": [
        {
          "counter": "senddmnip44_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 Nostr Tools for AI Agents, so you can run agents against it safely.

FAQ

Questions about sendDmNip44

What does the sendDmNip44 tool do? +

Send a NIP-44 direct message. It is categorised as a Write tool in the Nostr Tools for AI Agents MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on sendDmNip44? +

Register the Nostr Tools for AI Agents MCP server in PolicyLayer and add a rule for sendDmNip44: 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 Nostr Tools for AI Agents. Nothing to install.

What risk level is sendDmNip44? +

sendDmNip44 is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit sendDmNip44? +

Yes. Add a rate_limit block to the sendDmNip44 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 sendDmNip44 completely? +

Set action: deny in the PolicyLayer policy for sendDmNip44. 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 sendDmNip44? +

sendDmNip44 is provided by the Nostr Tools for AI Agents MCP server (jorgenclaw/nostr-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.