Enforced, Annotated Schema for Ruby Sequel Models

In plain words

ModelSchema is a Ruby development tool that adds enforced, annotated schema capabilities to Sequel models. It allows developers to define and validate database schema directly within their model code, ensuring consistency between model definitions and actual data structure. The tool is designed for Ruby developers working with the Sequel ORM who want stricter schema enforcement and better code documentation through annotations.

written from the facts on this page · September 2026

• 
  Pg_jsonschema – A Postgres extension for JSON validation2022 · github.com · ▲203

  pg_jsonschema is a solution we're exploring to allow enforcing more structure on json and jsonb typed postgres columns. We initially wrote the extension as an excuse to play with pgx, the rust framework for writing postgres extensions. That let us lean on existing rust libs for validation (jsonschema), so the extension's implementation is only 10 lines of code :) https://github.com/supabase/pg_jsonschema/blob/fb7ab09bf6050... happy to answer any questions!

• TA
  TypeSchema – A JSON specification to describe data models2024 · typeschema.org · ▲117

  TypeSchema is a JSON specification to describe data models in a programming language neutral format.

• 
  JSONSchema to TypeScript compiler2017 · github.com · ▲72

  Compile JSON Schema to TypeScript type declarations - bcherny/json-schema-to-typescript

• 
  Database Schema Gallery by DrawSQL2020 · drawsql.app · ▲156

  Collection of 200+ database diagram templates for developers

• 
  SchemaFlow2025 · schemaflow.dev · ▲128

  Real-time database schemas for AI-IDEs via MCP protocol

• 
  Schemamap.io2024 · schemamap.io · ▲89

  Instant batch data import for Postgres

• 
  /dev/null▲486

  a social network for devs

  Dev tools · 3d ago · dev-null.sh

• 
  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 28d ago · github.com

• 
  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 26d ago · github.com

• 
  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 23d ago · openbot.run

• 
  Talanoa▲346

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 21d ago · talanoa.email

• 
  CoreSpeed▲332

  One MCP for everything your agents need: apps, memory, tools

  Dev tools · 28d ago · corespeed.io

• 
  Brain.fm▲957

  Music for the brain to improve focus, meditation & sleep

  AI · 2015 · brain.fm

• 
  Something pointless I made▲747

  Life & fun · 2015 · dn.ht

• PA
  Parinfer – a simpler way to write Lisp▲674

  Parinfer - simpler Lisp editing

  Life & fun · 2015 · shaunlebron.github.io

• 
  Motion AI▲634

  Easily build chatbots to do anything, on any platform!

  AI · 2015 · motion.ai

• 
  f.lux for iOS▲596

  Auto adjust your iOS display based on the time of day

  Dev tools · 2015 · justgetflux.com

• 
  Fieldbook▲592

  Create a database, as easily as a spreadsheet

  Dev tools · 2015 · fieldbook.com