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.

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96 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

    Other
    Dormant

    Agent-to-Agent coordination that doesn't waste your context window. Token-efficient protocol with progressive discovery, zero-schema invocation, gRPC transport, and task lifecycle management.

    TypeScriptLicense: MIT
    • agent-coordination
    • agent-to-agent
    • ai-protocol
    • ddd
    • grpc

    githubmeasured growthOpen source ↗

    1GitHub starsstable
  2. 2

    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
  3. 3

    CLI
    Active

    Measure and shrink the token cost of Claude Code skills, tier by tier: the always-on system-prompt tax, the per-invocation body, and on-demand references, each priced at the rate it is actually billed.

    PythonLicense: MIT
    • claude
    • claude-code
    • claude-code-skills
    • cli
    • cost-optimization

    githubmeasured growthOpen source ↗

    1GitHub starsstable
  4. 4

    Skill
    Active

    A skill that shrink noisy log/output 60-90% before read — filter, group, dedupe, truncate. Cut token, cut cost, keep signal. By Dhayalan (aka Joy).

    PythonLicense: MIT
    • claude
    • claude-ai
    • claude-code
    • claude-code-plugin
    • claude-code-skill

    githubmeasured growthOpen source ↗

    Install /plugin marketplace add Da-ya7/PromptCompressor-skill

    1GitHub starsstable
  5. 5

    MCP
    Active

    Token cost math for LLM API calls: verified per-1M-token rates for 69 models, 17 providers.

    ↓ 27 downloads/weekJavaScriptLicense: MIT

      mcpmeasured growthOpen source ↗

      Install claude mcp add comparedge-llm-cost -- npx @comparedge/llm-cost-mcp

      2GitHub starsstable
    • 6

      Skill
      Dormant

      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
    • 7

      MCP
      Active

      Cut vision-LLM token costs by snapping images to tile boundaries — Claude, GPT, Gemini, Llama, Qwen

      ↓ 53 downloads/weekRustLicense: NOASSERTION

        mcpmeasured growthOpen source ↗

        Install claude mcp add vision-squeezer -- npx vision-squeezer

        2GitHub starsstable
      • 8

        Agent
        Active

        Agent context compressor and memory persistent orchestration

        TypeScriptLicense: Apache-2.0
        • a2a-protocol
        • agent-framework
        • ai
        • ai-agents-framework
        • ai-tools

        githubmeasured growthOpen source ↗

        2GitHub starsstable
      • 9

        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 starsstable
      • 10

        Other
        Active

        Claude Code skill: reduce token usage 60-80% — targeted reads, model switching, context management. One-line install.

        License: MIT
        • ai-tools
        • claude-code
        • claude-code-skill
        • llm
        • productivity

        githubmeasured growthOpen source ↗

        2GitHub starsstable
      • 11

        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
      • 12

        Other
        Active

        Turn your strongest model into a conductor: route each step to the cheapest capable model, and escalate only load-bearing pieces to a pricier reviewer that catches pitfalls early. Subscription, API, or hybrid.

        ShellLicense: MIT
        • ai-coding
        • claude
        • claude-code
        • claude-code-skill
        • cost-reduction

        githubmeasured growthOpen source ↗

        2GitHub starsstable
      • 13

        MCP
        Active

        MCP server that cuts AI coding agent token usage via framework-aware context optimization

        ↓ 19 downloads/weekTypeScriptLicense: NOASSERTION

          mcpmeasured growthOpen source ↗

          Install claude mcp add ai-optimizer -- npx @ai-optimizer/core

          0GitHub starsstable
        • 14

          Skill
          Active

          Claude Code skill: caveman-style token efficiency, spoken with a real Spanish regional accent

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

          githubmeasured growthOpen source ↗

          Install /plugin marketplace add Mun1to/SpanishCaveMan

          2GitHub starsstable
        • 15

          Skill
          Dormant

          ⚡ Cut Claude token usage by 90%+ — free, open-source, local-first context compression for Claude Code. Hybrid RAG (BM25 + ONNX vectors), AST chunking, reranking. No API needed.

          PythonLicense: MIT
          • ai-tools
          • bm25
          • claude-code
          • claude-code-plugin
          • context-compression

          githubmeasured growthOpen source ↗

          Install /plugin marketplace add Madhan230205/token-reducer

          44GitHub starsstable
        • 16

          MCP
          Active

          Pay-per-call agent APIs over x402: web scraping, token compression, and semantic cache.

          JavaScriptLicense: MIT

            mcpmeasured growthOpen source ↗

            Install claude mcp add gate402-mcp -- npx gate402-mcp

            2GitHub starsstable
          • 17

            MCP
            Active

            Persistent memory for any AI — zero token cost until recall

            RustLicense: Apache-2.0

              mcpmeasured growthOpen source ↗

              44GitHub starsstable
            • 18

              MCP
              Active

              Lossless context compression: 2-8x fewer tokens, byte-exact recovery, search inside payloads

              PythonLicense: MIT

                mcpmeasured growthOpen source ↗

                Install claude mcp add densely -- uvx densely

                6GitHub starsstable
              • 19

                Other
                Dormant

                Translate any language to English before Claude processes it. ~49% token savings combined with caveman.

                PythonLicense: MIT
                • claude-code
                • claude-code-skill
                • developer-tools
                • llm
                • multilingual

                githubmeasured growthOpen source ↗

                2GitHub starsstable
              • 20

                Skill
                Dormant

                Claude Code plugin that offloads large outputs to filesystem and retrieves when required.

                Python
                • ai-agents
                • claude-code
                • claude-code-hooks
                • claude-code-plugin
                • claude-code-plugins

                githubmeasured growthOpen source ↗

                Install /plugin marketplace add sheeki03/Few-Word

                38GitHub starsstable
              • 21

                Skill
                Active

                A Claude Code plugin that shows exactly where your AI coding session wasted tokens — and how to fix it. Flags waste, never quality. Runs locally.

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

                githubmeasured growthOpen source ↗

                Install /plugin marketplace add Jimmynycu/token-efficiency

                2GitHub starsstable
              • 22

                MCP
                Dormant

                Audit MCP servers, skills, and CLAUDE.md bloat eating your Claude Code context window.

                PythonLicense: MIT
                • claude
                • claude-code
                • claude-code-plugin
                • cli
                • context-window

                githubmeasured growthOpen source ↗

                35GitHub starsstable
              • 23

                MCP
                Dormant

                Save tokens while coding — your AI agent gets structured code context, not file dumps.

                ↓ 67 downloads/weekTypeScriptLicense: Apache-2.0

                  mcpmeasured growthOpen source ↗

                  Install claude mcp add codeweave -- npx @codeweave/mcp

                  4GitHub starsstable
                • 24

                  Skill
                  Dormant

                  Convert long AI conversations into portable conversation state graphs for LLM handoffs.

                  License: MIT
                  • age
                  • agent
                  • ai
                  • chatgpt
                  • claude-ai

                  githubmeasured growthOpen source ↗

                  Install git clone https://github.com/Adityapal67/context-graph-compressor ~/.claude/skills/context-graph-compressor

                  35GitHub starsstable
                • 25

                  MCP
                  Active

                  Review and compact prompts, docs, and AI-agent skills to save tokens, preserving structure.

                  ↓ 27 downloads/weekPythonLicense: MIT

                    mcpmeasured growthOpen source ↗

                    Install claude mcp add compactprompt -- uvx compactprompt

                    0GitHub starsstable