git:20260520.807b39a to git:20260721.3f741f2

# claude-code-token-saver

> The only Claude Code plugin built from CC source code analysis. 45% cost reduction measured on real workloads.

## What it does

claude-code-token-saver automatically reduces Claude Code API costs by preventing cache expiry waste, delegating work to cheaper SubTask sessions, and providing real-time cost visibility. Works with both Max Plan ($200/mo subscribers) and API pay-per-use billing.

## Key features

- Token Guardian: Detects prompt cache expiry and blocks $9 re-sends before they happen

- Session Architect: Auto-delegates heavy work to SubTasks with 37.5% cheaper cache writes

- Concise Mode: Reduces output token padding while preserving substance

- Status Line: Real-time cost/context/rate-limit monitoring at <50ms overhead

- /usage-view: Interactive HTML dashboard with AI-powered cost analysis in 23 languages

- /setup-git-lite: Removes 2,200 hidden tokens CC silently injects every session (~$48/mo saved)

## Measured impact

- $326/day → $180/day (45% reduction) on full-day coding workload

- Cache expiry prevention: $9 saved per catch, ~$270/mo at daily frequency

- Git instruction optimization: ~$48/mo saved

- Plugin overhead: ~1,400 tokens/session ($0.07 per 100-call session)

- Net effect with git-lite: plugin consumes less than it removes

## Technical approach

Built by analyzing Claude Code source code (v2.1.88):

- Traced token injection to context.ts:36-111 (gitStatus) and tools/BashTool/prompt.ts:53 (commit instructions)

- Identified cache structure paths in utils/api.ts:321 (splitSysPromptPrefix)

- Mapped three cache invalidation paths (MCP active, no MCP, 3P provider)

## Installation

```

/plugin marketplace add ww-w-ai/marketplace

/plugin install claude-code-token-saver@ww-w-ai

```

## Links

- Source: https://github.com/ww-w-ai/claude-code-token-saver

- License: Apache-2.0

- Languages: 23 (auto-detected from OS locale)