TypeSchema – A JSON specification to describe data models
TypeSchema is a JSON specification to describe data models in a programming language neutral format.
TypeSchema – A JSON specification to describe data models launched on October 24, 2024 with 117 votes, #443 of 5,185 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
TypeSchema is a JSON specification designed to describe data models. It provides a standardized way to define and document the structure of data across different systems and applications. The specification enables developers to create consistent, machine-readable descriptions of data schemas. TypeSchema is useful for anyone building APIs, databases, or data-driven applications who needs a clear, portable format for defining data structures.
written from the facts on this page · September 2026
From the sources
At the following list you can take a look at example output for each supported programmingfrom typeschema.org
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Pg_jsonschema – A Postgres extension for JSON validation2022 · github.com · ▲203pg_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!
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GPT-JSON – Structured and typehinted GPT responses in Python2023 · github.com · ▲174Hey HN, I've been using GPT a lot lately in some side projects around data generation and benchmarking. During the course of prompt tuning I ended up with a pretty complicated request: the value that I was looking for, an explanation, a criticism, etc. JSON was the most natural output format for this but results would often be broken, have wrong types, or contain missing fields. There's been some positive movement in this space, like with jsonformer (https://github.com/1rgs/jsonformer) the other day. But nothing that was plug and play with GPT. This library consolidates…
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