# Miller CSV TSV JSON Data Processor

> Miller (mlr) is a command-line tool for querying, shaping, and reformatting name-indexed data such as CSV, TSV, JSON, and JSON Lines. It combines the functionality of awk, sed, cut, join, and sort into a single tool purpose-built for structured data processing.

- Skill: `agentskillexchange/miller-csv-tsv-json-data-processor` (Agent Skill)
- Install (CLI): `npx skillmds@latest add agentskillexchange/miller-csv-tsv-json-data-processor`
- Raw SKILL.md: https://api.skillmd.com/api/skills/agentskillexchange/miller-csv-tsv-json-data-processor/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Data & Analytics
- Author: agentskillexchange (https://skillmd.com/u/agentskillexchange)
- Updated: 2026-09-08
- Page: https://skillmd.com/skills/agentskillexchange/miller-csv-tsv-json-data-processor

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# Miller CSV TSV JSON Data Processor

Miller (mlr) is a command-line tool for querying, shaping, and reformatting name-indexed data such as CSV, TSV, JSON, and JSON Lines. It combines the functionality of awk, sed, cut, join, and sort into a single tool purpose-built for structured data processing.

## Installation

Requirements and caveats from upstream:
- For those operations which require deeper retention (sort, tac, stats1),

Basic usage or getting-started notes:
- [![deepwiki](https://deepwiki.com/badge.svg)](https://deepwiki.com/johnkerl/miller)
- [Miller in 10 minutes](https://miller.readthedocs.io/en/latest/10min)
- [A Guide To Command-Line Data Manipulation](https://www.smashingmagazine.com/2022/12/guide-command-line-data-manipulation-cli-miller)

- Source: https://github.com/johnkerl/miller
- Extracted from upstream docs: https://raw.githubusercontent.com/johnkerl/miller/HEAD/README.md

## Source

- [Agent Skill Exchange](https://agentskillexchange.com/skills/miller-csv-tsv-json-data-processor/)