Versioned data codec with Standard Schema support
put.io visual reference CLI for curated screenshots and agent-readable UI evidence.
Validate your runtime data with easy to pick up, TypeScript-inspired syntax.
A tool to verify an email address exits via SMTP
Functional validation with Zod integration and Result types for Trailhead System
YAML validator for Windmill flow, schedule, and trigger files
Validate strings, numbers, and data formats (email, URL, IP, UUID, JSON, etc.)
Validate and generate UCP (Universal Commerce Protocol) Business Profiles
Generate and validate numbers and identifiers like IBAN, ISBN, EAN, PESEL, BSN, UTR, NINO, NIF, DNI, passwords...
Elegant answer for routing SPA and MPA, any element can help to define paths with variables and fallback values
A pure JavaScript/TypeScript JSON parser and validator with detailed error reporting — zero dependencies
PDF Generator API Node for n8n
Connect is a family of libraries for building and consuming APIs on different languages and platforms, and [@connectrpc/connect](https://www.npmjs.com/package/@connectrpc/connect) brings type-safe APIs with Protobuf to TypeScript.
**English** | [日本語](README.ja.md)
AgentGuard CLI — scan agent source code and validate policy coverage
MCP server and CLI tool for interacting with the Wayback Machine without API keys
Zettelgeist CLI: regen, validate, install-hook, serve, export-doc commands.
A simple generator for Apple ID client secret JWTs.
Validation library inspired by Laravel's Validator
Lint rules to validate and auto-correct annotation-based policies
IR utilities: validation, diffing, patching, migration
Construct CLI — scaffold, build, develop, and publish spaces
validator for tegg