data-quality-frameworks

data-quality-frameworks is a skill for Claude Code, Codex from wshobson/agents. It costs 37 tokens per session (906 once invoked), scanned A, original, MIT.

A set of practices for checking whether data is complete, valid, consistent, accurate, and up to date. It uses tools such as Great Expectations and dbt, a tool for transforming and testing data.

In plain words
What is it for?
It helps add validation to data pipelines, define data contracts between teams, monitor data quality, and run checks in CI/CD.
Why use it?
It catches missing, duplicated, outdated, or incorrect data before it damages reports and downstream systems.

Skill for Claude CodeCodex

Part of the data-engineering plugin — 4 skills, 2 commands, 1 agent shipped together

About the project

Agentic Plugin Marketplace is a collection of reusable plugins, agents, skills, commands, and rules for coding-agent tools including Claude Code, Codex CLI, Cursor, OpenCode, Antigravity CLI, and GitHub Copilot. It is for developers assembling agentic workflows across multiple harnesses from shared Markdown sources, and the catalogue entries are examples or subsets of those workflow components.

wshobson/agents · 39,424 stars · on GitHub

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/wshobson/agents/data-quality-frameworks
Any agent
npx skills add wshobson/agents --skill data-quality-frameworks
Clone the repo
git clone --depth 1 https://github.com/wshobson/agents

Made for: Claude Code, Codex.

Or install data-engineering, the plugin that ships this one along with the rest of its 4 skills, 2 commands, 1 agent.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for data-quality-frameworks

README.md
[![agentmods](https://agentmods.dev/badge/skills/wshobson/agents/data-quality-frameworks.svg)](https://agentmods.dev/skills/wshobson/agents/data-quality-frameworks)
Your own site
<a href="https://agentmods.dev/skills/wshobson/agents/data-quality-frameworks"><img src="https://agentmods.dev/badge/skills/wshobson/agents/data-quality-frameworks.svg" alt="Measured on agentmods" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 906 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00037 $0.00906
Opus 5 $0.00018 $0.00453
Sonnet 5 $0.00007 $0.00181
Haiku 4.5 $0.00004 $0.00091

Measured yesterday against content hash 58e61444165b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

data-quality-frameworks scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

plugins/data-engineering/skills/data-quality-frameworks/SKILL.md · 139 lines

How it starts

The opening of the file, as written. The whole thing — 139 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Data Quality Frameworks

Production patterns for implementing data quality with Great Expectations, dbt tests, and data contracts to ensure reliable data pipelines.

When to Use This Skill

  • Implementing data quality checks in pipelines
  • Setting up Great Expectations validation
  • Building comprehensive dbt test suites
  • Establishing data contracts between teams
  • Monitoring data quality metrics
  • Automating data validation in CI/CD

Core Concepts

1. Data Quality Dimensions

Dimension Description Example Check
Completeness No missing values expect_column_values_to_not_be_null
Uniqueness No duplicates expect_column_values_to_be_unique
Validity Values in expected range expect_column_values_to_be_in_set
Accuracy Data matches reality Cross-reference validation
Consistency No contradictions expect_column_pair_values_A_to_be_greater_than_B
Timeliness Data is recent expect_column_max_to_be_between

2. Testing Pyramid for Data

          /\
         /  \     Integration Tests (cross-table)
        /────\
       /      \   Unit Tests (single column)
      /────────\
     /          \ Schema Tests (structure)
    /────────────\

Quick Start

Great Expectations Setup

# Install
pip install great_expectations

# Initialize project
great_expectations init

# Create datasource
great_expectations datasource new
# great_expectations/checkpoints/daily_validation.yml
import great_expectations as gx

# Create context
context = gx.get_context()

# Create expectation suite
suite = context.add_expectation_suite("orders_suite")

# Add expectations
suite.add_expectation(
    gx.expectations.ExpectColumnValuesToNotBeNull(column="order_id")
)
suite.add_expectation(
    gx.expectations.ExpectColumnValuesToBeUnique(column="order_id")
)

# Validate
results = context.run_checkpoint(checkpoint_name="daily_orders")

Read the full file on GitHub · 139 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 139 lines · 37 tokens per session scan A 58e61444165b

Subscribe to this mod's changes

data-quality-frameworks is a skill published in the GitHub repository wshobson/agents (39,424 stars, last pushed 3d ago), licensed MIT. It adds 37 tokens to every session and 906 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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