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nostr-tools

Create, sign, and filter Nostr events with relay communication via nostr-tools.

4|Updated Dec 20, 2025
Search Tags:#cryptography#events#filters#relay#nostr#signing#nostr-tools
One-click install
npx skills add https://github.com/PlebeianApp/plebeian-signer --skill nostr-tools-plebeianapp
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: nostr-tools
Source: https://github.com/PlebeianApp/plebeian-signer/tree/main/.claude/skills/nostr-tools
Command: npx skills add https://github.com/PlebeianApp/plebeian-signer --skill nostr-tools-plebeianapp

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Nostr development often requires orchestrating event creation, signing, filtering, and relay communication across multiple libraries. nostr-tools centralizes these tasks, reducing boilerplate and potential errors.

Core Features & Use Cases

  • Event handling: create, sign, verify events with standard Nostr kinds.
  • Key management and encoding: generate keys and encode to bech32 formats.
  • Relay communication: interact with relays via SimplePool and direct Relay connections.
  • NIP implementations and cryptography: support for NIP-04, NIP-44, NIP-05, etc.
  • Filtering and querying: build complex filters and perform batched queries.

Quick Start

Install the library with npm install nostr-tools and start by creating a signed event with the core APIs.

Frequently Asked Questions about nostr-tools

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I create and sign Nostr events in a Node script?▼

To create and sign Nostr events, use nostr-tools APIs like finalizeEvent. This library centralizes event handling, key generation, and bech32 encoding for Node scripts, browser extensions, and front-end apps.

How does relay communication work with Nostr?▼

Relay communication in Nostr uses SimplePool and direct Relay connections. nostr-tools manages these connections to subscribe to event streams and perform batched queries across multiple relays.

Can I implement NIP-04, NIP-44, and NIP-05 for Nostr cryptography?▼

Yes, Nostr cryptography supports NIP-04, NIP-44, and NIP-05 implementations. nostr-tools provides dedicated modules like nip04 and nip44 to handle encryption, decryption, and verification.

What's the best way to build complex filters for Nostr event streams?▼

The best way to build complex filters for Nostr event streams is using the querying capabilities in nostr-tools. It allows you to compose intricate filters and perform batched queries to retrieve specific events.

Do I need nostr-tools to generate keys and encode to bech32?▼

You need nostr-tools to generate keys and encode to bech32 formats. It provides built-in functions for key management and encoding, reducing boilerplate when building Nostr applications.

Why does my Nostr app need centralized event creation and relay handling?▼

A Nostr app needs centralized event creation and relay handling to reduce boilerplate and potential errors. nostr-tools orchestrates signing, filtering, and relay communication across browser extensions and front-end apps.

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