Json Parsing Python Packages

json-strong-typing

Auxiliary services for working with Python type annotations.

jsonparse

A simple JSON key parse library

llm-output-guard

A production-ready Python package that validates LLM outputs against schemas, with automatic JSON extraction and retry logic.

alterx

A powerful file processing toolkit for batch transformations of HTML, JSON, TOML, XML, and YAML files

confident-extract

Deterministic structured extraction from noisy LLM/OCR output. Zero LLM round-trips, microsecond latency, confidence score on every result. msgspec · Pydantic · dataclasses.

sentinel-blocks

Robust extraction of structured payloads from LLM output via sentinel blocks (<<<TAG>>> … <<<END>>>). Survives quotes, newlines & braces that break JSON.parse. 10 language ports, one spec.

isjsonvalid

A simple python package for JSON validation