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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98 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

    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
  2. 2

    Skill
    Active

    Compact Claude Code statusline — zero-dependency, crash-free on Windows

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

    githubmeasured growthOpen source ↗

    Install /plugin marketplace add WaterTian/cc-hud

    8GitHub starsstable
  3. 3

    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
  4. 4

    Skill
    Active

    Local-first memory and prompt-cache layer for Claude Code

    TypeScriptLicense: MIT
    • agentic-ai
    • agentic-coding
    • ai
    • ai-agents
    • anthropic

    githubmeasured growthOpen source ↗

    Install /plugin marketplace add riz007/somtum

    7GitHub starsstable
  5. 5

    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
  6. 6

    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
  7. 7

    Skill
    Active

    Resume Claude Code work after rate/usage/context limits without replaying the prior transcript. Auto-saves at 90%/95% usage. Plugin-installable, 10 languages.

    PowerShellLicense: MIT
    • checkpoint
    • claude-code
    • claude-code-plugin
    • claude-code-skills
    • context

    githubmeasured growthOpen source ↗

    Install /plugin marketplace add sofumel/claude-handoff-revive

    6GitHub 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
      Dormant

      Claude Code plugin — inventory all your installed skills, check structure, and find updates. Free, zero dependencies.

      JavaScriptLicense: MIT
      • ai-tools
      • anthropic
      • audit
      • claude
      • claude-code

      githubmeasured growthOpen source ↗

      Install /plugin marketplace add VersoXBT/skill-manager

      6GitHub starsstable
    • 10

      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
    • 11

      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
      • 12

        MCP
        Active

        Reduces AI agent token usage by 90% via context compression and task checkpoint persistence.

        ↓ 98 downloads/weekJavaScriptLicense: MIT

          mcpmeasured growthOpen source ↗

          Install claude mcp add smart-context-mcp -- npx smart-context-mcp

          4GitHub starsstable
        • 13

          MCP
          Active

          Compact, source-linked context packs that reduce token waste for coding agents.

          TypeScriptLicense: MIT

            mcpmeasured growthOpen source ↗

            Install claude mcp add capsule -- npx capsulectx

            4GitHub starsstable
          • 14

            Skill
            Active

            20 power-user skills for Claude Code: session memory and consolidation, context compression, multi-agent orchestration, adversarial bug hunting, security review, calibrated estimation and decision archaeology. Drop-in SKILL.md files. Built…

            License: MIT
            • agent-skills
            • ai-agent
            • ai-coding
            • ai-developer-tools
            • ai-workflow

            githubmeasured growthOpen source ↗

            Install git clone https://github.com/irfad7/claude-power-skills ~/.claude/skills/claude-power-skills

            4GitHub starsstable
          • 15

            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
            • 16

              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
              • 17

                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
              • 18

                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
              • 19

                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
              • 20

                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
              • 21

                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
              • 22

                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
              • 23

                MCP
                Active

                Reversible context compression for AI agents: cut token usage up to 94%, originals retrievable

                ↓ 13 downloads/weekPythonLicense: Apache-2.0

                  mcpmeasured growthOpen source ↗

                  Install claude mcp add token_optimizer -- uvx slimctx

                  1GitHub starsstable
                • 24

                  MCP
                  Active

                  Cut AI agent token costs 5-15x — routes only relevant code symbols instead of full files.

                  ↓ 55 downloads/weekPythonLicense: MIT

                    mcpmeasured growthOpen source ↗

                    Install claude mcp add agent-booster -- uvx agent-booster

                    1GitHub starsstable

                  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