Schema Validation Python Packages

gqlalchemy

GQLAlchemy is a library developed with the purpose of assisting in writing and running queries on Memgraph. GQLAlchemy supports high-level connection to Memgraph as well as modular query builder.

json-structure

Official SDKs for JSON Structure schema and instance validation

arnio

Data trust for Python. Validate, clean, and profile DataFrames before everything else.

agent-friend

Find the MCP schema issues eating your context window. 156 checks. Grade A+ through F. ESLint for MCP.

metaseed

Create, edit, and validate scientific metadata against a standard (MIAPPE, ISA, Darwin Core, DiSSCo, ENA, PRIDE, MetaboLights, FAIRDOM-SEEK) from a YAML profile — CLI, web interface, Python API, and MCP server.

typedframe

Typed wrappers over pandas DataFrames with schema validation

pdbe-mmcif-validator

Real-time VSCode extension and standalone Python script for validating mmCIF/CIF files against the PDBx/mmCIF dictionary or any CIF dictionary.

strictspec

Define a schema once in TOML, and generate the full toolchain in your language: validation, versioning, migrations, etc. -- First-class support for Go, Python, and TypeScript

phx-filters

Opinionated schema validation for Python - chain type-safe filters with | like UNIX pipes

pydictable

Python object serializer/deserializer and schema validator with extendability!

pyspark-contracts

Lightweight schema and data quality validation for PySpark DataFrames

hyperion-sdk

Headless ETL/ELT & data-pipeline SDK for Python: a typed data catalog with Avro schemas and swappable storage/queue/cache backends — same code runs locally or on AWS.

mcp-json-yaml-toml

A structured data reader and writer like 'jq' and 'yq' for AI Agents

se-manifest-schema

Canonical SE_MANIFEST.toml schema for Structural Explainability; dependency-free base layer for manifest validation.

agentsor-file

Validate downloaded partner CSV/Parquet feeds locally after SFTP/S3, then alert on missed rolling receipts.

metamessage

MetaMessage（mm）是一個結構化數據交換協議。自描述、自約束、自示例，實現了無損數據交換，是一種原生適配 AI + 人類 + 機器的下一代通用協議。

statguardian

Fast, declarative data quality framework (Rust). Schema validation, drift detection, anomaly detection. Pandas/Polars/DuckDB support.

rpc-python-toolkit

Framework-agnostic Python JSON-RPC 2.0 toolkit with HTTP client/server support, schema validation, and Safe Mode interoperability

toolkit-data-contracts

Data contract management and drift detection for ML/LLM pipelines -- automatic schema inference, validation, and statistical profiling with CI/CD integration.

logging-objects-with-schema

This library provides a logger subclass built on top of the standard `logging` module that strictly controls additional `extra` fields using a JSON schema.

seam-schema

One schema. Every language. No drift. A cross-language data contract with a Rust core: write validation once in a .seam file, and Python, Node, the browser and the JVM enforce identical rules on the cases that actually break, dates, integer precision, and absent vs null.

nacho-python

Lightweight, schema-first dynamic configuration service for Python

driftbrake

A schema contract guard for data pipelines. Detects, classifies, and reports schema changes in PostgreSQL databases.

mathema-language

Language domains for mathema: the alphabets, predicate languages, hazard families and schema languages a claim quantifies text and structured values over with L[...].