Immutable SHA-256 hash-chained JSON event log on PostgreSQL. Append-only audit chain with self-maintaining, never-migrated schema.

Implementation of JSON Web Signatures

Command-line tools for tr-json-chain: a CLI to record into and inspect a hash-chained JSON event log, and a standalone CSV-export integrity verifier.

A micro-library of stream components for building custom JSON and JSONC processing pipelines with a minimal memory footprint — parse, filter, and transform JSON far larger than available memory with a SAX-inspired token API, on Node.js or Web Streams.

JWA implementation (supports all JWS algorithms)

TypeScript definitions for stream-json

Build and manage the fast-json-stringify instances for the fastify framework

The official JSON schema converter for Valibot

Light client that connects to Polkadot and Substrate-based blockchains

Angular Schematics - Library

SDK for deploying tokens using Clanker

This package exports the interface of `polkadot-api` with the chain.

Creates Zod types from JSON Schema at runtime

Converts Zod schemas to Json Schemas

Chain functions, generators, Node streams, and Web streams into a pipeline with backpressure support.

a low-level, lightweight protocol buffers implementation in JavaScript

Check if a value is a valid JSON object/array string (or a plain object), without try/catch on the caller side.

JSON file KV storage backend for the DeepSeek Harness storage hub

File-backed settings provider (settings.yaml) for the DeepSeek Harness

JSON Web Token implementation (symmetric and asymmetric)