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Codex CLI logoCodex CLIFast pandas and Polars scripting in the terminal

Codex CLI Python Data Cruncher

setuproll@setuproll
87.0Overall score

Codex CLI pointed at a data folder, set up to write, run and self-correct Python analysis scripts in one loop. For analysts who live in the terminal and want the agent to actually execute the notebook-free pipeline, not just suggest it.

87.0Score
940Votes
5Components

Install this build

Export
terminal
npm i -g @openai/codex && codex

Components

Model

  • GPT-5.3 Codex

Stack

  • Codex CLI
  • uv
  • Polars
  • DuckDB

MCP servers

  • filesystem
  • git

Rules

  • Always show the dataframe shape after each step
  • Use Polars lazy frames for files over 1GB
  • Write results to parquet, never overwrite raw data

How it works

  • Point Codex at the data directory and describe the question
  • It drafts a script, runs it, and reads the actual output
  • Errors feed straight back into the next iteration
  • Final pipeline saved as a reusable .py with uv lockfile

Summary

Codex CLI pointed at a data folder, set up to write, run and self-correct Python analysis scripts in one loop. For analysts who live in the terminal and want the agent to actually execute the notebook-free pipeline, not just suggest it.

87.0 score 940 votes

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