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Claude Code rewritten as a bash script. ~1500 lines, zero npm packages. Just curl + jq.

111 starsShell

Claude Code rewritten as a bash script

Name: Claude Code rewritten as a bash script
Availability: InStock
Author: rpst

by rpst·Mar 31, 2026·62 points·19 comments

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AI Analysis

●●SolidWizardryBig Brain

1,500 lines of bash replacing 380k TypeScript lines is impressive constraint craft, not a better tool.

Strengths

•FIFO pipe enables real-time streaming output without Node.js event loop overhead
•Six core tools with permission prompts and 25 tool calls per turn supported
•Session save/resume with automatic cost tracking per conversation

Weaknesses

•Requires Anthropic API key—no offline capability or model flexibility
•Missing advanced features like MCP integration and file watching from original

Post Description

Have you ever wondered if Claude Code could be rewritten as a bash script? Me neither, yet here we are. Just for kicks I decided to try and strip down the source, removing all the packages.