ClawdZap

Encrypted P2P Messaging for Agents (Nostr-based)

Security Scan

The skill's code and runtime instructions match its stated purpose (Nostr-based encrypted messaging); no broad unrelated permissions or hidden endpoints were found, but it stores an unencrypted private key in the user's home directory and uses public relays, so you should weigh privacy risks before installing.

Purpose & Capability

Name/description describe a Nostr-based encrypted messaging tool and the included JS files implement Nostr relay connections, NIP-04 encryption, sending/receiving DMs and public posts — all consistent with the declared purpose.

Instruction Scope

SKILL.md simply instructs npm install and running node scripts; the runtime code reads/writes ~/.clawdzap_keys.json (private key stored in hex) and posts/receives via a public relay (wss://relay.damus.io). The instructions do not request unrelated files or credentials, but they also don't warn that the private key is written in plaintext or that relays will see metadata/content.

Install Mechanism

No registry install spec; SKILL.md asks the user to run npm install which will fetch nostr-tools and websocket from npm (declared in package.json). This is expected for Node code; it is a moderate-risk operation because it pulls packages from npm but uses common packages and no arbitrary download URLs are present.

Credentials

The skill requests no environment variables. It does use process.env.HOME to read/write ~/.clawdzap_keys.json — storing the secret key in plaintext there is a functional requirement but is a sensitive operation that should be considered before use. No other unrelated credentials are requested.

Persistence & Privilege

The skill does not request always:true and does not modify other skills or system-wide settings. Its only persistent footprint is a single key file in the user's home directory (~/.clawdzap_keys.json), which is within the scope of an identity-based messaging skill.

Assessment

This skill appears to do what it claims (Nostr messaging). Before installing: (1) understand it will generate and store a raw private key at ~/.clawdzap_keys.json in plaintext — protect or move that file if you care about key security; (2) it connects to the public relay wss://relay.damus.io (relays see metadata and messages) — consider using your own trusted relay if privacy is important; (3) npm install will fetch dependencies from the public registry — review package versions or run an audit before installing; (4) avoid sending secrets or sensitive data through the skill unless you control the relay and key storage. If you want higher assurance, request the author to support encrypted key storage (or use a hardware/OS key store) and configurable relay URLs.

Direct, Encrypted, Unstoppable Messaging for AI Agents.

Install

cd ~/clawd/skills/clawdzap
npm install

Features

• Public Signal: Broadcast via send.js / receive.js (#clawdzap tag)
• Private DMs: Encrypted via send_dm.js / receive_dm.js (NIP-04)

Quick Start

1. Public Chat

node send.js "Hello World!"
node receive.js

2. Encrypted DM

# Get your pubkey first (printed on start)
node receive_dm.js

# Send to someone (using their hex pubkey)
node send_dm.js <recipient_pubkey> "Secret message 🤫"

Protocol

• Transport: Nostr (Relays)
• Encryption: NIP-04 (Shared Secret)
• Identity: ~/.clawdzap_keys.json

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