Token efficiency: tools for developers

Tools that reduce token costs, compress context or cache LLM requests. An entry can appear under several use cases when its topics or description provide several explicit signals.

Use case

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101 entries in this view.

Tool ranking

Ranked by measured growth, normalized across sources. Raw values keep their source-specific window, shown under each tool; a change requires at least two snapshots from the last 7 days.

  1. 1

    Skill
    Active

    Claude Code plugin that tracks token usage, identifies wasted context, and saves 30-50% on API costs. Heatmaps, ROI reports, budget alerts, efficiency scores, git-aware suggestions — all local, zero config.

    JavaScriptLicense: MIT
    • ai-tools
    • anthropic
    • claude-code
    • claude-code-plugin
    • cli-plugin

    githubmeasured growthOpen source ↗

    Install /plugin marketplace add egorfedorov/claude-context-optimizer

    102GitHub stars+7 (+7.4 %)
  2. 2

    Other
    Active

    Find the ghost tokens. Fix them. Survive compaction. Avoid context quality decay.

    Python
    • agentskills
    • claude-code
    • claude-code-skill
    • claude-plugin
    • context-engineering

    githubmeasured growthOpen source ↗

    2 084GitHub stars+120 (+6.1 %)
  3. 3

    Skill
    Active

    Agent Dashboard: Visualization and analytics for Sessions and Quota Usage. Track, analyze, and optimize token usage across providers with heatmaps, cost tracking, token counting and quota resets..

    PythonLicense: MIT
    • agent
    • analytics
    • anthropic
    • claude-code
    • claude-code-plugin

    githubmeasured growthOpen source ↗

    Install /plugin marketplace add JingbiaoMei/Tokdash

    66GitHub stars+3 (+4.8 %)
  4. 4

    MCP
    Active

    Cut context bloat in your AI-agent stack: find and safely prune unused skills, MCP servers and subagents from real transcript evidence

    GoLicense: MIT
    • agent-skills
    • ai-agents
    • anthropic
    • claude-code
    • claude-code-plugin

    githubmeasured growthOpen source ↗

    54GitHub stars+2 (+3.8 %)
  5. 5

    Skill
    Active

    Governance framework for AI coding agents. It runs them through a five-step workflow (plan, build, review, test, ship) where no step counts as done without evidence. Drop-in rules and guardrails for Claude Code, Codex, Cursor, Copilot, and…

    PythonLicense: MIT
    • agent-framework
    • agent-orchestration
    • agentic-development
    • agents-md
    • ai-agent

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/KbWen/agentic-os ~/.claude/skills/agentic-os

    150GitHub stars+5 (+3.4 %)
  6. 6

    Skill
    Active

    Claude Code usage governor: compact professional output, context slimming, tool-output filtering, telemetry, and drift guardrails.

    PythonLicense: MIT
    • ai-tools
    • claude-ai
    • claude-code
    • claude-code-plugin
    • claude-skills

    githubmeasured growthOpen source ↗

    Install /plugin marketplace add 0xhimanshu/governor

    133GitHub stars+4 (+3.1 %)
  7. 7

    MCP
    Active

    MCP server and proxy that compresses LLM prompts, tool output, and replies to cut token cost.

    ↓ 171 downloads/weekRustLicense: MPL-2.0

      mcpmeasured growthOpen source ↗

      Install claude mcp add llmtrim -- npx @llmtrim/cli

      222GitHub stars+6 (+2.8 %)
    • 8

      Skill
      Active

      Own your LLM's web search: a local search->fetch->rank pipeline that replaces hosted web-search tools. Measured: matches hosted accuracy at 66% lower cost and up to 88% fewer tokens, plus a precision-tuned semantic caching with…

      PythonLicense: MIT
      • agent-memory
      • agent-skills
      • agentic-workflow
      • agents
      • anthropic

      githubmeasured growthOpen source ↗

      Install git clone https://github.com/firish/webfetch ~/.claude/skills/webfetch

      55GitHub stars+1 (+1.9 %)
    • 9

      MCP
      Active

      Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 20% fewer tokens for coding agents, 60-95% fewer tokens for JSON, same answers. Library, proxy, MCP server.

      PythonLicense: Apache-2.0
      • agent
      • ai
      • anthropic
      • claude-code
      • compression

      githubmeasured growthOpen source ↗

      68 221GitHub stars+619 (+0.92 %)
    • 10

      MCP
      Active

      Tinder for your Claude Code skills, subagents and MCP servers. Swipe away what wastes context, scan for prompt injection, get honest token costs. Fixes what it finds and actually deletes. Zero dependencies, Claude Code + Codex.

      ShellLicense: MIT
      • agent-skills
      • ai-agents
      • claude
      • claude-code
      • claude-code-marketplace

      githubmeasured growthOpen source ↗

      115GitHub stars+1 (+0.88 %)
    • 11

      CLI
      Active

      CLI proxy that reduces LLM token consumption by 60-90% on common dev commands. Single Rust binary, zero dependencies

      RustLicense: Apache-2.0
      • agentic-coding
      • ai-coding
      • anthropic
      • claude-code
      • cli

      githubmeasured growthOpen source ↗

      78 098GitHub stars+671 (+0.87 %)
    • 12

      Skill
      Active

      Claude Code skill — delegate coding tasks to Mistral Vibe, supervise via git diff & save 50-90% Claude token usage

      Shell
      • claude
      • claude-ai
      • claude-ai-skills
      • claude-code
      • claude-skill

      githubmeasured growthOpen source ↗

      Install git clone https://github.com/pcx-wave/vibe-skill ~/.claude/skills/vibe-skill

      118GitHub stars+1 (+0.85 %)
    • 13

      Skill
      Active

      Content-aware output compression for AI coding assistants. 36 specialized processors cut CLI output tokens by 60-99% (git, pytest, npm, terraform, kubectl, docker, and more) without losing errors, diffs, or stack traces.

      PythonLicense: Apache-2.0
      • agentic-ai
      • ai-coding-assistant
      • claude-code
      • claude-code-plugin
      • cli-tools

      githubmeasured growthOpen source ↗

      Install /plugin marketplace add ppgranger/token-saver

      140GitHub stars+1 (+0.72 %)
    • 14

      MCP
      Active

      Context engineering for AI agents. ~80% fewer tokens. Fix tool overload. Skills and memory with in-process BM25 and semantic retrieval. Progressive Disclosure. No vector DB.

      TypeScriptLicense: MIT
      • accuracy
      • agents
      • claude-skills
      • context
      • harness

      githubmeasured growthOpen source ↗

      430GitHub stars+3 (+0.70 %)
    • 15

      Skill
      Active

      Lossless context compression plugin for Claude Code & OpenCode.

      TypeScriptLicense: BSD-3-Clause
      • anthropic
      • chatgpt
      • claude
      • claude-code
      • claude-code-plugin

      githubmeasured growthOpen source ↗

      Install /plugin marketplace add aerovato/magic-compact

      144GitHub stars+1 (+0.70 %)
    • 16

      Skill
      Active

      23 Claude Code plugins: TDD enforcement hooks, git/PR workflows, spec-driven development, code review, project lifecycle, fix-from-error, maintenance automation, context optimization, research, and multi-LLM delegation. 186 skills, 128…

      PythonLicense: MIT
      • ai-agents
      • architecture-patterns
      • awesome-claude-code
      • awesome-claude-skills
      • claude-agents

      githubmeasured growthOpen source ↗

      Install git clone https://github.com/athola/claude-night-market ~/.claude/skills/claude-night-market

      332GitHub stars+2 (+0.61 %)
    • 17

      Skill
      Dormant

      Pith is the hook that makes Claude Code sessions last 3x longer.

      PythonLicense: MIT
      • anthropic
      • claude-code
      • claude-code-plugin
      • llm-tools
      • token-optimization

      githubmeasured growthOpen source ↗

      Install /plugin marketplace add abhisekjha/pith

      98GitHub starsstable
    • 18

      Skill
      Dormant

      A Claude Code skill for web report decks — richer ECharts charts, one file per slide (edit one page, save tokens), and complex structure diagrams. 16:9 & vertical, PDF/image export.网页版 PPT 汇报的 Claude Code skill：ECharts 把数据画得更好看、每页一个文件改一页省…

      HTMLLicense: MIT
      • ai
      • anthropic
      • claude
      • claude-code
      • claude-skills

      githubmeasured growthOpen source ↗

      Install git clone https://github.com/myunwang/ppt-report-skills ~/.claude/skills/ppt-report-skills

      81GitHub starsstable
    • 19

      Skill
      Dormant

      Give Claude Code photographic memory in ONE portable file. No database, no SQLite, no ChromaDB - just a single .mv2 file you can git commit, scp, or share. Native Rust core with sub-ms operations.

      TypeScriptLicense: MIT
      • ai-tools
      • anthropic
      • claude
      • claude-agents
      • claude-ai

      githubmeasured growthOpen source ↗

      Install git clone https://github.com/memvid/claude-brain ~/.claude/skills/claude-brain

      574GitHub starsstable
    • 20

      Skill
      Active

      Claude Code skills for developers who code like cats — never more effort than the problem requires.

      JavaScriptLicense: MIT
      • ai-productivity
      • anthropic
      • cat
      • claude
      • claude-code

      githubmeasured growthOpen source ↗

      Install git clone https://github.com/albertobarnabo/lazy-cat ~/.claude/skills/lazy-cat

      50GitHub starsstable
    • 21

      Skill
      Active

      SpiderBrain v3 is a multi-platform skill/framework to reduce token usage and AI hallucinations across Claude, Cursor, and other AI tools.

      • agent-skills
      • ai
      • ai-agents
      • anthropic
      • claude

      githubmeasured growthOpen source ↗

      Install git clone https://github.com/abhishek-performdigital/Spiderbrain-V3 ~/.claude/skills/Spiderbrain-V3

      65GitHub starsstable
    • 22

      MCP
      Active

      Pre-injection context compression for coding agents. Zero LLM calls, zero telemetry, offline-safe.

      RustLicense: NOASSERTION

        mcpmeasured growthOpen source ↗

        609GitHub starsstable
      • 23

        MCP
        Active

        Context compression plugin for Claude Code. Automatically trims large tool output—JSON, YAML, stack traces, and logs—before it enters the context window.

        TypeScriptLicense: MIT
        • claude-code
        • claude-code-plugin
        • context-compression
        • context-window
        • developer-tooling

        githubmeasured growthOpen source ↗

        64GitHub starsstable
      • 24

        MCP
        UnknownLast commit: unavailable

        AI agent token-cost telemetry + 429 prediction. Per-agent attribution, anomaly + routing + quota.

        mcpmeasured growthOpen source ↗

        Install claude mcp add openclaw-cost-tracker-mcp -- uvx openclaw-cost-tracker-mcp

        129downloads over 7 daysstable

      Learning resources

      Ranked by measured growth, normalized across sources. These resources remain available separately and do not take part in the main tool ranking.

      1. 1

        outsourcerer

        Skill
        ActiveOpen source ↗

        Make the most out of your subscriptions. Delegate work to other harnesses and models, while keeping your main session the orchestrator. Nothing new to learn. Keep working like you do, but better.

        Shell
        • agent-skills
        • agentic-workflow
        • claude-code
        • codex
        • fable
        github

        Install git clone https://github.com/alexgreensh/outsourcerer ~/.claude/skills/outsourcerer

        Resourcemeasured growth
        142GitHub stars+5 (+3.6 %)