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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44 entries in this view.

Tool ranking

Mixed ranking: measured growth takes priority; entries without two snapshots are estimated. 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

    MCP
    Active

    A MCP that turns PDFs into structured text, tables, figures, metadata, annotations, and page-level evidence for selective retrieval by MCP-compatible AI agents. Improves the information quality AI agents receive while also reducing token…

    JavaScriptLicense: AGPL-3.0
    • ai
    • ai-tools
    • claude
    • claude-code
    • claude-code-plugin

    githubmeasured growthOpen source ↗

    17GitHub starsstable
  2. 2

    Agent
    Active

    Control plane for AI coding agents: route tasks, reduce token spend, run multi-agent workflows, fallback executors, and track cost per task.

    PythonLicense: Apache-2.0
    • a2a
    • ag-ui
    • agentic-ai
    • ai-agents
    • ai-coding

    githubmeasured growthOpen source ↗

    16GitHub starsstable
  3. 3

    Skill
    Active

    对标 claude-hud 核心功能，控制在 7 行以内更轻量。内置 13 个国产大模型平台用量查询 (智谱 GLM / MiniMax / DeepSeek / Kimi / StepFun / SiliconFlow 等)，第三方代理用户也能实时看到额度消耗。

    TypeScriptLicense: MIT
    • anthropic
    • claude
    • claude-code
    • claude-code-plugin
    • cli

    githubmeasured growthOpen source ↗

    Install /plugin marketplace add zander-zyx/claude-mini-hud

    9GitHub starsstable
  4. 4

    Skill
    Active

    mcp-recall compresses MCP tool outputs (94 KB → 3.5 KB · 96%) and stores full results in SQLite for retrieval — up to 30x more tool calls per session for heavy MCP workloads.

    TypeScriptLicense: MIT
    • bun
    • claude
    • claude-code
    • claude-code-plugin
    • context-window

    githubmeasured growthOpen source ↗

    Install /plugin marketplace add sakebomb/mcp-recall

    8GitHub starsstable
  5. 5

    MCP
    Active

    Persistent memory + security layer for Claude Code (MCP plugin). Agents remember your project across sessions (~87% fewer context tokens), every tool call lands in a tamper-evident HMAC audit chain, and skills are AST-scanned +…

    TypeScriptLicense: MIT
    • agent-security
    • ai-agent-memory
    • ai-agents
    • audit-trail
    • claude-code

    githubmeasured growthOpen source ↗

    8GitHub starsstable
  6. 6

    Skill
    Active

    A production-ready Claude Code setup. Global CLAUDE.md, coding rules, per-project memory, and token optimization.

    ShellLicense: MIT
    • ai-agents
    • claude
    • claude-code
    • claude-code-plugin
    • context-engineering

    githubmeasured growthOpen source ↗

    Install /plugin marketplace add janmaaarc/basecamp

    7GitHub starsstable
  7. 7

    Skill
    Active

    A Claude Code hook that routes each Read on a PDF to the path that actually works: text layer to UTF-8 text, scans to vision, and neither one through poppler.

    PythonLicense: MIT
    • claude-code
    • claude-code-hooks
    • claude-code-plugin
    • pdf
    • poppler

    githubmeasured growthOpen source ↗

    Install /plugin marketplace add WatsonTsai/pdf-text-router

    7GitHub starsstable
  8. 8

    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
    • 9

      Skill
      Active

      Automatically detect and disable irrelevant Claude Code skills per project to save tokens and streamline your tech workflow.

      PythonLicense: MIT
      • agents
      • ai-agents
      • antigravity
      • claude
      • claude-code-plugins

      githubmeasured growthOpen source ↗

      Install git clone https://github.com/mrdenox109-nyx/skill-manager ~/.claude/skills/skill-manager

      5GitHub starsstable
    • 10

      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
    • 11

      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
    • 12

      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
    • 13

      MCP
      Active

      Context optimization for LLM agents: tool registry, result masking, budgeting, compaction.

      RustLicense: NOASSERTION

        mcpmeasured growthOpen source ↗

        Install claude mcp add distil -- npx @munhq/distil

        1GitHub starsstable
      • 14

        Skill
        Active

        Cut Claude Code token costs by delegating bulk LLM work to cheap models. 600+ models via NanoGPT, OpenRouter, Groq or local Ollama — batched, resumable, with real per-call cost tracking.

        PythonLicense: MIT
        • ai-agents
        • batch-processing
        • cheap-llm
        • claude-code
        • claude-code-agents

        githubmeasured growthOpen source ↗

        Install /plugin marketplace add bicced/sidequest

        1GitHub starsstable
      • 15

        MCP
        Active

        Statically audits MCP tool surfaces for token cost, schema quality, and design issues.

        TypeScript

          mcpmeasured growthOpen source ↗

          Remote server, to be declared in the MCP configuration https://mcplint-web.vercel.app/api/mcp

          0GitHub starsstable
        • 16

          MCP
          Active

          Verifies token/cost savings claimed by AI context-reduction proxies via MCP tools.

          TypeScriptLicense: Apache-2.0

            mcpmeasured growthOpen source ↗

            Install claude mcp add tokentrust -- uvx tokentrust-cli

            0GitHub starsstable
          • 17

            Library
            Active

            A high-performance, ergonomic web framework for Rust with native AI/LLM support.

            RustLicense: Apache-2.0
            • ai-native
            • api-framework
            • async
            • backend
            • developer-tools

            githubestimated momentumOpen source ↗

            61GitHub stars—
          • 18

            Skill
            Active

            The Agent Knowledge Kit & Architecture System — 10–32x token-efficient architecture discovery for AI coding agents

            TypeScript
            • agentic-ai
            • ai-agents
            • antigravity
            • bun
            • claude-code

            githubestimated momentumOpen source ↗

            Install git clone https://github.com/chama-x/quiv ~/.claude/skills/quiv

            3GitHub stars—

          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

            mcp-agent-skills-hub

            MCP
            ActiveOpen source ↗

            Molavi Agent Skills: Curated AI agent skills and MCP configs for Antigravity, Cursor, Codex & Claude — by Taghi Molavi

            JavaScriptLicense: MIT
            • agentic-workflows
            • ai-agents
            • ai-skills
            • antigravity
            • awesome-list
            githubResourcemeasured growth
            8GitHub starsstable