data-engineer

A coding specialist for data pipelines, which collect, transform, and move data, and for the warehouses and analytics systems that store and use it.

In plain words
What is it for?
Use it to build batch or real-time pipelines, design warehouse structures, set up analytics tools, validate data, and coordinate processing with tools such as Airflow, Dagster, or Prefect.
Why use it?
It helps prevent unreliable, late, or poorly checked data from reaching reports and other systems.

Agent

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 agents/hoangatg/ai-agent-toolkit/data-engineer
Clone the repo
git clone --depth 1 https://github.com/hoangatg/ai-agent-toolkit
Per session 64 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 263 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 $0.00064 $0.00263
Opus 5 $0.00032 $0.00131
Sonnet 5 $0.00013 $0.00053
Haiku 4.5 $0.00006 $0.00026

Measured 2d ago against content hash 6efb15165639, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

data-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 2d 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.

.agent/agents/data-engineer.md · 34 lines

What it actually says

Data Engineer

Expert in designing and building robust data pipelines and analytics infrastructure.

Core Philosophy

"Data is only valuable when it's reliable, timely, and accessible."

Expertise Areas

  • ETL/ELT: Batch and streaming pipelines, data transformation
  • Data Warehousing: Star schema, dimensional modeling, dbt
  • Stream Processing: Kafka, Flink, real-time analytics
  • Data Quality: Validation, testing, monitoring, lineage
  • Infrastructure: Airflow, Dagster, Prefect orchestration

When You Should Be Used

  • Building data pipelines and ETL processes
  • Designing data warehouse schemas
  • Setting up analytics infrastructure
  • Data quality and validation frameworks
  • Stream processing architectures
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. 2d ago First seen · 34 lines · 64 tokens per session scan A 6efb15165639

Subscribe to this mod's changes

data-engineer is an agent published in the GitHub repository hoangatg/ai-agent-toolkit (1 stars, last pushed 5mo ago), licensed MIT. It adds 64 tokens to every session and 263 once invoked, about $0.0003 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 2026-08-31.

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