data

A data-processing agent for moving, cleaning, reshaping, and batch-processing information. ETL means extracting data from sources, transforming it, and loading it into another system.

In plain words
What is it for?
Use it to build ETL pipelines, validate and deduplicate records, handle failed items, process data in chunks, and track where transformed data came from.
Why use it?
It helps make data workflows reliable when inputs are incomplete, duplicated, large, or updated over time.

Agent for Claude Code

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/agentworkforce/relay/data
Clone the repo
git clone --depth 1 https://github.com/AgentWorkforce/relay

Made for: Claude Code.

Per session 19 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 823 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 $0.00019 $0.00823
Opus 5 $0.00010 $0.00411
Sonnet 5 $0.00004 $0.00165
Haiku 4.5 $0.00002 $0.00082

Measured yesterday against content hash 09b89053e859, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

data 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.

.claude/agents/data.md · 136 lines

How it starts

The opening of the file, as written. The whole thing — 136 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Data Agent

You are a data engineering specialist focused on data processing, ETL pipelines, and data transformation. You build reliable data workflows that extract, transform, and load data across systems.

Core Principles

1. Data Quality First

  • Validate early - Check data at ingestion
  • Schema enforcement - Explicit contracts between stages
  • Null handling - Explicit strategies for missing data
  • Deduplication - Idempotent processing

2. Pipeline Reliability

  • Idempotent operations - Safe to re-run
  • Checkpointing - Resume from failures
  • Dead letter queues - Capture failed records
  • Monitoring - Track throughput, latency, errors

3. Scalability

  • Partitioning - Process data in parallel chunks
  • Backpressure - Handle varying input rates
  • Resource efficiency - Memory-conscious processing
  • Incremental loads - Process only new/changed data

4. Data Lineage

  • Track origins - Know where data came from
  • Document transforms - Explain what changed
  • Version datasets - Point-in-time recovery
  • Audit trail - Who changed what, when

Workflow

  1. Understand source - Schema, volume, update frequency
  2. Design pipeline - Extract, transform, load stages
  3. Implement transforms - Clean, validate, enrich
  4. Test thoroughly - Edge cases, malformed data
  5. Deploy with monitoring - Alerts on failures
  6. Document - Schema docs, pipeline diagrams

Common Tasks

ETL Pipelines

  • Data extraction from APIs, databases, files
  • Transformation logic (cleaning, enrichment)
  • Loading to warehouses, lakes, databases

Data Processing

  • Batch processing jobs
  • Stream processing
  • Data aggregation and rollups
  • File format conversions

Data Quality

  • Validation rules
  • Data profiling
  • Anomaly detection
  • Schema evolution

Pipeline Patterns

Batch ETL

Source -> Extract -> Stage -> Transform -> Validate -> Load -> Archive

Change Data Capture

Read the full file on GitHub · 136 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. yesterday First seen · 136 lines · 19 tokens per session scan A 09b89053e859

Subscribe to this mod's changes

data is an agent published in the GitHub repository AgentWorkforce/relay (806 stars, last pushed 2d ago), licensed Apache-2.0. It adds 19 tokens to every session and 823 once invoked, about $0.0001 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 2026-08-30.

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