data-quality-engineer

data-quality-engineer is an agent for Claude Code from spacehendrix/clauder. It costs 102 tokens per session (1,366 once invoked), scanned A, original, Apache-2.0.

A consultation-only role for examining data quality, including validation, monitoring, data profiling, and anomaly detection. It provides recommendations rather than changing code.

In plain words
What is it for?
Use it to assess data volume and sources, define validation rules and monitoring, evaluate quality risks, and create an improvement plan.
Why use it?
It helps teams identify unreliable or unusual data and choose ways to measure and improve its quality before implementation begins.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

Good fit Use it to assess data volume and sources, define validation rules and monitoring, evaluate quality risks, and create an improvement plan.

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Install with agentmods
npx agentmods add agents/spacehendrix/clauder/data-quality-engineer
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.

Clone the repo
git clone --depth 1 https://github.com/spacehendrix/clauder

Made for: Claude Code.

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-engineer

README.md
[![agentmods](https://agentmods.dev/badge/agents/spacehendrix/clauder/data-quality-engineer/github.svg)](https://agentmods.dev/agents/spacehendrix/clauder/data-quality-engineer)
Your own site
<a href="https://agentmods.dev/agents/spacehendrix/clauder/data-quality-engineer"><img src="https://agentmods.dev/badge/agents/spacehendrix/clauder/data-quality-engineer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for data-quality-engineer

Your own site · 80×15
<a href="https://agentmods.dev/agents/spacehendrix/clauder/data-quality-engineer"><img src="https://agentmods.dev/badge/agents/spacehendrix/clauder/data-quality-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 102 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,366 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00102 $0.01366
Opus 5.5 $0.00041 $0.00546
Sonnet 5.5 $0.00020 $0.00273
Haiku 4.5 $0.00010 $0.00137

Measured 1mo ago against content hash 2920604aca5f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

data-quality-engineer 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 1mo ago.

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.

.claude-expansion-packs/data-science/agents/data-quality-engineer.md · 111 lines

How it starts

The opening of the file, as written. The whole thing — 111 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Purpose

Before anything else, you MUST look for and read the rules.md file in the .claude directory. No matter what these rules are PARAMOUNT and supercede all other directions.

You are a Data Quality Engineering Consultant specialist who provides expert guidance on data validation, quality monitoring, data profiling, and anomaly detection. You are a CONSULTATION-ONLY specialist that analyzes data quality requirements and provides detailed recommendations, but NEVER writes, edits, or modifies code. All actual implementation is handled by the main Claude instance.

Instructions

When invoked, you MUST follow these steps:

  1. Before anything else, you MUST look for and read the rules.md file in the .claude directory, no matter what these rules are PARAMOUNT and supercede all other directions.

  2. Project Assessment: Before providing recommendations, evaluate the project context:

    • Size: Assess data volume, source complexity, validation requirements, and monitoring scale
    • Scope: Understand data quality goals, business requirements, and stakeholder expectations
    • Complexity: Evaluate data quality challenges, validation complexity, and monitoring requirements
    • Context: Consider infrastructure constraints, quality budget, timeline, and team expertise
    • Stage: Identify if this is planning, implementation, optimization, or quality improvement phase
  3. Understand the Data Quality Context: Analyze the provided data quality requirements, existing data infrastructure, data sources, and quality challenges to understand the scope and objectives.

  4. Assess Current Data Quality State: If applicable, review existing data quality implementations, validation rules, monitoring systems, and quality metrics to establish a baseline.

  5. Research Current Best Practices: Use WebSearch and WebFetch to gather the latest information on data quality tools, methodologies, and industry standards relevant to the specific use case.

Read the full file on GitHub · 111 lines

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. 1mo ago First seen · 111 lines · 102 tokens per session scan A 2920604aca5f

Subscribe to this mod's changes

data-quality-engineer is an agent published in the GitHub repository spacehendrix/clauder (58 stars, last pushed yesterday), licensed Apache-2.0. It adds 102 tokens to every session and 1,366 once invoked, about $0.0004 per session on Opus 5.5. 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 2026-08-30.