Installation

Add the package and check what the runtime supports.

Install

pnpm add @0xsarwagya/ghost# or: npm install @0xsarwagya/ghost

The package has two entry points and zero dependencies:

@0xsarwagya/ghost — the browser API: identity lifecycle and signing.
@0xsarwagya/ghost/server — the verifier: challenges, proofs, replay protection. Runs anywhere globalThis.crypto exists — Node 20+, Deno, Bun, and edge runtimes. Node 18.17+ works but 20+ is recommended.

Runtime requirements

The browser side needs Web Crypto Ed25519 and IndexedDB — baseline in Chromium 137+, Firefox 129+, and Safari 17+. Instead of memorizing that, ask the runtime:

import { capabilities } from "@0xsarwagya/ghost";
 
const caps = await capabilities();
if (!caps.supported) {
  // Render an honest unsupported state. caps.webCrypto, caps.ed25519,
  // and caps.indexedDB say exactly what is missing.
}

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