nostr_sign_event

Sign a Nostr event (NIP-01) using BIP-340 Schnorr.

SERVERAibtc SOURCEaibtcdev/aibtc-mcp-server

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity verified Pull the record →

This record as markdown: /tools/io-github-aibtcdev-mcp-server/nostr-sign-event.md

WHAT IT DOES

What nostr_sign_event does on Aibtc

AI agents invoke nostr_sign_event to trigger actions in Aibtc. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why nostr_sign_event is rated High

This tool performs a cryptographic signing operation using private key material, which constitutes an external cryptographic action with significant security implications. Signing a Nostr event triggers an operation that authenticates and authorizes a message for broadcast on the Nostr network. Misuse could lead to unauthorized message signing or identity impersonation.

From the tool's definition Sign a Nostr event (NIP-01) using BIP-340 Schnorr

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs nostr_sign_event safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Aibtc, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For nostr_sign_event, this is the rule to start with:

nostr_sign_event Rate-limited

nostr_sign_event stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "nostr_sign_event": {
      "limits": [
        {
          "counter": "nostr_sign_event_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Aibtc, apply this rule, and every nostr_sign_event call is checked against it from then on.

FAQ

Questions about nostr_sign_event

What does the nostr_sign_event tool do? +

Sign a Nostr event (NIP-01) using BIP-340 Schnorr. It is categorised as a Execute tool in the Aibtc MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on nostr_sign_event? +

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

What risk level is nostr_sign_event? +

nostr_sign_event is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit nostr_sign_event? +

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

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

nostr_sign_event is provided by the Aibtc MCP server (aibtcdev/aibtc-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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