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@ravilabs/prompt-analyzer

v1.0.0

Published

Analyze Claude Code session data — token usage, cache efficiency, cost estimates, and prompt improvement recommendations

Downloads

68

Vulnerabilities

Powered byPowered by Snyk
  • 0High
  • 0Medium
  • 0Low

Links

Git

Maintainers

patelravipatelravi

Keywords

claudeclaude-codepromptanalyticstoken-usagecacheanthropic

Readme

@ravilabs/prompt-analyzer

Analyze your Claude Code session data and generate a rich HTML report covering token usage, cache efficiency, API cost estimates, repeated prompt patterns, and actionable improvement recommendations.

Quick Start

# Run analysis and open HTML report in browser
npx @ravilabs/prompt-analyzer

# Install the /prompt-analysis skill into Claude Code
npx @ravilabs/prompt-analyzer install

What You Get

The HTML report includes:

| Section | What it shows | |---|---| | Executive Summary | Sessions, prompts, estimated cost, cache hit rate, date range | | Token Usage Over Time | Daily stacked chart — input / cache read / cache write / output | | Cache Efficiency | Hit/miss doughnut chart, per-model rates, $ saved vs uncached | | Cost Breakdown | Daily cost bar chart, per-model cost table | | Prompt Verbosity | Prompt length histogram, input:output ratio stats | | Repeated Patterns | Similar prompt clusters — CLAUDE.md and hook candidates | | Recommendations | Rule-based, actionable suggestions |

Commands

npx @ravilabs/prompt-analyzer              # Analyze + open report in browser
npx @ravilabs/prompt-analyzer analyze      # Analyze only (CI-friendly, no browser)
npx @ravilabs/prompt-analyzer install      # Install skill globally to Claude Code
npx @ravilabs/prompt-analyzer install --local  # Install skill to current project
npx @ravilabs/prompt-analyzer help         # Show help

Claude Code Skill

After running install, restart Claude Code and use /prompt-analysis in any session to trigger an interactive analysis with recommendations.

Data Sources

  • ~/.claude/projects/*/[session-id].jsonl — full conversation transcripts with token usage
  • ~/.claude/history.jsonl — global prompt history

No data leaves your machine. Everything runs locally.

Pricing Model Used

| Model | Input | Cache Write | Cache Read | Output | |---|---|---|---|---| | claude-sonnet-4-6 | $3.00/MTok | $3.75/MTok | $0.30/MTok | $15.00/MTok | | claude-opus-4-7 | $15.00/MTok | $18.75/MTok | $1.50/MTok | $75.00/MTok | | claude-haiku-4-5 | $0.80/MTok | $1.00/MTok | $0.08/MTok | $4.00/MTok |

Requirements

  • Node.js ≥ 18.0.0
  • Claude Code with at least one session recorded

Platform Support

Works on macOS, Linux, and Windows.

| Platform | Claude data path | |---|---| | macOS / Linux | ~/.claude/ | | Windows | %APPDATA%\Claude\ |

License

MIT