Data Contract Framework

$59

Complete data contract implementation with YAML spec, CLI generator, schema validation, SLA monitoring, and breaking change detection.

📁 17 files🏷 v1.0.0

Production-ready

✓ Instant download✓ Lifetime updates✓ MIT licensed✓ MIT license✓ Secure checkout (Stripe)

📋 What's Inside 17 files

✓ README.md—
✓ manifest.json—
✓ spec/contract_schema.yaml—
✓ spec/example_contracts/customer_events.yaml—
✓ spec/example_contracts/financial_transactions.yaml—
✓ spec/example_contracts/product_catalog.yaml—
✓ cli/contract_generator.py—
✓ cli/contract_validator.py—
✓ notebooks/sla_monitoring.py—
✓ notebooks/breaking_change_detector.py—
✓ notebooks/contract_compliance_dashboard.py—
✓ registry/contract_registry.py—
✓ templates/producer_consumer_agreement.md—
✓ templates/contract_templates/api_source.yaml—
✓ templates/contract_templates/database_source.yaml—

📁 File Structure 17 files

data-contract-framework/
├── README.md
├── manifest.json
├── spec/
│ ├── contract_schema.yaml
│ ├── example_contracts/
│ │ ├── customer_events.yaml
│ │ ├── financial_transactions.yaml
│ │ ├── product_catalog.yaml
├── cli/
│ ├── contract_generator.py
│ ├── contract_validator.py
├── notebooks/
│ ├── sla_monitoring.py
│ ├── breaking_change_detector.py
│ ├── contract_compliance_dashboard.py
├── registry/
│ ├── contract_registry.py
├── templates/
│ ├── producer_consumer_agreement.md
│ ├── contract_templates/
│ │ ├── api_source.yaml
│ │ ├── database_source.yaml
│ │ ├── file_source.yaml
├── guides/
│ ├── implementation_guide.md

📖 Documentation Preview README excerpt

Data Contract Framework

Product by [Datanest Digital](https://datanest.dev)

A production-ready framework for defining, validating, and monitoring data contracts across

your data platform. Enforce schema guarantees, SLA compliance, and breaking change detection

with a structured, version-controlled approach to data ownership.

What's Included

Component	Description
`spec/`	YAML-based contract specification format with example contracts
`cli/`	Command-line tools for generating and validating contracts
`notebooks/`	Databricks notebooks for SLA monitoring, breaking change detection, and compliance dashboards
`registry/`	Contract catalog with full versioning and search support
`templates/`	Ready-to-use contract templates and producer/consumer agreement
`guides/`	Step-by-step implementation guide

Quick Start

1. Define a Contract


contract:
  name: customer_events
  version: 1.0.0
  owner:
    team: data-engineering
    contact: team-lead@company.com
  schema:
    fields:
      - name: event_id
        type: string
        required: true
        description: Unique event identifier
      - name: event_timestamp
        type: timestamp
        required: true
        description: UTC timestamp of the event
  sla:
    freshness:
      max_delay_minutes: 30
    completeness:
      min_percentage: 99.5


2. Generate Contracts from Existing Tables


python cli/contract_generator.py \
  --catalog main \
  --schema analytics \
  --table customer_events \
  --output spec/example_contracts/


3. Validate Data Against Contracts


... preview truncated, see full README in product download.

`📄 Code Sample .py preview`

cli/contract_generator.py"""
Data Contract Generator — CLI Tool
Datanest Digital — https://datanest.dev

Generates data contract YAML files from existing Databricks Unity Catalog tables.
Introspects table schemas, column metadata, and table properties to produce
a ready-to-customize contract definition.

Usage:
    python contract_generator.py --catalog main --schema analytics --table events --output ./contracts/
    python contract_generator.py --catalog main --schema analytics --all --output ./contracts/
"""

from __future__ import annotations

import argparse
import json
import re
import sys
from dataclasses import dataclass, field
from datetime import datetime, timezone
from pathlib import Path
from typing import Any, Optional

try:
    import yaml
except ImportError:
    print("ERROR: PyYAML is required. Install with: pip install pyyaml>=6.0")
    sys.exit(1)


# ---------------------------------------------------------------------------
# Data models
# ---------------------------------------------------------------------------

@dataclass
class FieldSpec:
    """Represents a single field in a data contract schema."""

    name: str

`⚙ Requirements & Compatibility`

Requirement	Details
Python	>=3.9
License	MIT (see license-terms page)

`📅 Changelog`

v1.0.0 — Initial release.

Purchases include lifetime updates. Check the product page for the latest version.

`📄 Product Preview`

Try the interactive reader and demo tools below, or get the full product with all content unlocked.

📖 Interactive Reader (Free Preview)⚙ Try Demo Tools📦 Download Free Sample

`❓ Frequently Asked Questions`

What license is this under?

MIT License. You can use it in commercial, client, and internal projects. See our license terms page for details.

How do I download after purchase?

Immediately after purchase, you'll be redirected to a download page. A download link is also sent to your email.

Do I get updates?

Yes. All products include lifetime updates at no extra cost. Re-download anytime for the latest version.

What if it doesn't work for me?

DM @DatanestDigital on X and we'll make it right.

Can I get a refund?

DM @DatanestDigital on X with your order number and we'll help.

Is there support?

DM @DatanestDigital on X. We respond within 1-2 business days.



      
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