{"schemaVersion":"opencli.cli.v1","slug":"mlr","name":"Miller","shortName":"mlr","binaryName":"mlr","maker":{"slug":"johnkerl","name":"John Kerl","type":"individual","url":"https://github.com/johnkerl","officialPlatformMaker":false,"featuredBuilder":false},"category":"Data","description":"CSV transforms, stream processing, and data shaping from the terminal. Built by John Kerl.","tagline":"CSV transforms, stream processing, and data shaping from the terminal.","install":{"packageManager":"brew","command":"brew install miller","packageName":null,"npmPackage":null,"brewFormula":"miller","brewCask":null,"crateName":null,"pypiPackage":null,"goPackage":null,"dockerImage":null},"verify":{"command":"mlr --version","signal":"mlr responds locally and is ready for the first real command."},"quickStart":"mlr --csv cut -f name,email data.csv","exampleWorkflow":["mlr --csv cut -f name,email data.csv"],"agent":{"readiness":{"label":"Usable with guardrails","score":50,"reasons":["Supports non-interactive/scripted use.","Works well in CI or repeatable automation."],"guardrails":["Prefer small commands and ask the agent to summarize plain text output."]},"packUrl":"https://opencli.co/cli/mlr/agent.md","packMarkdown":"# OpenCLI Agent Pack: Miller\n\nUse this when an AI agent needs to work with `mlr`.\n\n## What this CLI is for\nCSV transforms, stream processing, and data shaping from the terminal. Built by John Kerl.\n\nBest for: csv transforms, stream processing, and data shaping from the terminal.\n\n## Agent readiness\nUsable with guardrails (50/100)\n- Supports non-interactive/scripted use.\n- Works well in CI or repeatable automation.\n\n## Install\n```sh\nbrew install miller\n```\n\n## Verify before real work\n```sh\nmlr --version\n```\nExpected signal: mlr responds locally and is ready for the first real command.\n\n## Safe starting commands\n```sh\nmlr --version\n```\n\n```sh\nmlr --csv cut -f name,email data.csv\n```\n\n## Guardrails for agents\n- Prefer small commands and ask the agent to summarize plain text output.\n\n## Suggested agent instruction\nYou may use Miller (`mlr`) for csv transforms, stream processing, and data shaping from the terminal.. First install it if missing, then run the verify command. Start with read-only or inspection commands. Summarize what you found before changing anything. Ask for confirmation before commands that mutate remote state, spend money, deploy, delete data, merge code, or expose secrets.\n\nSource: OpenCLI\n"},"fit":{"bestFor":"csv transforms, stream processing, and data shaping from the terminal.","useThisIf":"You need data processing in both local dev and CI.","skipIf":"You don't work with data processing.","whatHappensNext":"Run `mlr --csv cut -f name,email data.csv` and see what comes back."},"capabilities":{"agentFriendly":true,"supportsJsonOutput":false,"supportsNonInteractive":true,"supportsDryRun":false,"requiresAuth":false,"requiresNetwork":false,"ciFriendly":true,"localFirst":false,"destructivePotential":"low"},"taxonomy":{"useCases":["CSV transforms","Stream processing","Data shaping"],"aliases":["miller"],"keywords":["csv transform tsv data"],"tags":["builder","agent-friendly","ci-friendly"]},"links":{"website":"https://miller.readthedocs.io","github":"https://github.com/johnkerl/miller","docs":"https://miller.readthedocs.io/","opencli":"https://opencli.co/cli/mlr","markdown":"https://opencli.co/cli/mlr/agent.md","json":"https://opencli.co/cli/mlr.json"},"metrics":{"githubStars":9901,"latestRelease":"2026-06-05T11:37:30Z","license":"NOASSERTION","metricLabel":"Homebrew installs (30d)","metricValue":369,"metricSource":"homebrew","metricAsOf":"2026-06-08T11:00:50.568Z"}}