---
title: "Miller CSV TSV JSON Data Processor"
description: "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."
verification: "security_reviewed"
source: "https://github.com/johnkerl/miller"
category:
  - "Data Extraction & Transformation"
framework:
  - "Claude Code"
tool_ecosystem:
  github_repo: "johnkerl/miller"
  github_stars: 9814
---

# 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

Choose whichever fits your setup:

1. Copy this skill folder into your local skills directory.
2. Clone the repo and symlink or copy the skill into your agent workspace.
3. Add the repo as a git submodule if you manage shared skills centrally.
4. Install it through your internal provisioning or packaging workflow.
5. Download the folder directly from GitHub and place it in your skills collection.

## Source

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