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BytesAgain β€Ί Skills β€Ί PRECC
πŸ¦€ ClawHub

PRECC

by @yijunyu

Automatically fixes bash command errors, compresses CLI output, and redirects code search for efficient, cost-saving Claude Code execution.

Versionv0.2.4-1
Downloads652
#legal#automation
TERMINAL
clawhub install precc

πŸ“– About This Skill

PRECC β€” Predictive Error Correction for Claude Code

PRECC saves ~34% of Claude Code costs through three pillars: fixing bash commands before they fail, compressing tool output, and reducing context token usage via semantic search and file compression. Ships as a single Rust binary.

Three Savings Pillars

Pillar 1: Command Correction & Output Compression

  • Fixes wrong-directory commands β€” Detects when cargo build or npm test is run in the wrong directory and prepends cd /correct/path &&
  • Prevents repeated failures β€” Learns from past session failures and auto-corrects commands that would fail the same way
  • Compresses CLI output β€” Rewrites commands to use RTK for 60-90% smaller output
  • Suggests GDB debugging β€” When a command fails repeatedly, suggests precc debug

    • Pillar 2: Semantic Code Search (cocoindex-code)

  • Intercepts grep/rg and redirects through AST-aware semantic search
  • Built into the precc-hook binary; no extra scripts needed
  • Understands code structure across 28+ languages, saving ~70% of search tokens

    • Pillar 3: Context File Compression

  • Strips filler words from CLAUDE.md and memory files via precc compress
  • Reduces tokens loaded on every API call (~30% compression)
  • Backups saved automatically, revertible with precc compress --revert

    • Install

    curl -fsSL https://raw.githubusercontent.com/yijunyu/precc-cc/main/scripts/install.sh | bash
precc init

    Usage

    Once installed, PRECC works automatically as a PreToolUse hook.

    # Mine existing session history for failure-fix patterns
precc ingest --all
    View what PRECC has learned
    
precc skills list
    View unified savings report (all three pillars)
    
precc savings
    Semantic code search (requires cocoindex-code)
    
ccc init && ccc index
ccc search "authentication middleware"
    Compress context files
    
precc compress --dry-run   # preview
precc compress             # compress
precc compress --revert    # revert

    Measured Results

    | Metric | Value | |--------|-------| | Cost savings | $296 / $878 (34%) | | Failures prevented | 352 / 358 (98%) | | Bash calls improved | 894 / 5,384 (17%) | | Cache reads saved | 988M / 1.67B tokens (59%) | | Hook latency | 2.93ms avg (1.77ms overhead) |

    Links

  • GitHub: https://github.com/yijunyu/precc-cc
  • ClawHub: https://clawhub.ai/skills/precc
  • cocoindex-code: https://github.com/cocoindex-io/cocoindex-code
  • token-saver: https://clawhub.ai/skills/token-saver
  • RTK: https://github.com/rtk-ai/rtk

    • πŸ’‘ Examples

    Once installed, PRECC works automatically as a PreToolUse hook.

    # Mine existing session history for failure-fix patterns
precc ingest --all
    View what PRECC has learned
    
precc skills list
    View unified savings report (all three pillars)
    
precc savings
    Semantic code search (requires cocoindex-code)
    
ccc init && ccc index
ccc search "authentication middleware"
    Compress context files
    
precc compress --dry-run   # preview
precc compress             # compress
precc compress --revert    # revert