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

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

    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
    • 2

      Skill
      Active

      Eco mode for Claude Code. /eco: -31% to -73% output tokens with critical findings intact; /eco-max: up to -75% with lowered effort. Measured hardest on Claude Fable 5 (fable5), deep-studied on Sonnet 5, works on Opus 4.8 too. We publish our…

      JavaScriptLicense: MIT
      • ai-agents
      • anthropic
      • claude
      • claude-ai
      • claude-code

      githubmeasured growthOpen source ↗

      Install /plugin marketplace add sup3x/claude-code-eco

      33GitHub starsstable
    • 3

      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
      • 4

        Skill
        Active

        Rolling context compression for Claude Code — never hit the context wall. Auto-compresses old messages while keeping recent context verbatim. Zero config, zero latency. Works as a Claude Code plugin.

        PythonLicense: MIT
        • ai-agent
        • ai-coding
        • anthropic
        • claude
        • claude-code

        githubmeasured growthOpen source ↗

        Install /plugin marketplace add NodeNestor/claude-rolling-context

        31GitHub starsstable
      • 5

        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
      • 6

        Skill
        Active

        Restore prior Claude Code AND Codex sessions with zero LLM calls. Cross-tool session handoff, cache-expiry prevention, real cost dashboard. One plugin, both hosts.

        JavaScriptLicense: Apache-2.0
        • anthropic-api
        • api-cost
        • billing-analytics
        • cache-management
        • claude-code

        githubmeasured growthOpen source ↗

        Install /plugin marketplace add ww-w-ai/super-token-saver

        31GitHub starsstable
      • 7

        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
      • 8

        Skill
        Dormant

        Give your Claude Code Agent Teams a memory. Auto-injects role-specific context into every new teammate — your team never starts blind again.

        Python
        • agent-teams
        • ai-agents
        • anthropic
        • claude
        • claude-ai

        githubmeasured growthOpen source ↗

        Install /plugin marketplace add Gr122lyBr/claude-teams-brain

        26GitHub starsstable
      • 9

        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
      • 10

        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
      • 11

        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

        githubmeasured growthOpen source ↗

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

        3GitHub starsstable
      • 12

        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
      • 13

        MCP
        UnknownLast commit: unavailable

        MCP server for Skim code transformation. Compresses code 60-95% for LLM context optimization.

        mcpestimated momentumOpen source ↗

        Install claude mcp add skim-mcp-server -- npx skim-mcp-server

        21downloads over 7 days—
      • 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

        githubestimated momentumOpen source ↗

        Install /plugin marketplace add bicced/sidequest

        1GitHub stars—
      • 15

        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

        githubestimated momentumOpen source ↗

        Install /plugin marketplace add VersoXBT/skill-manager

        6GitHub 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
      2. 2

        SUMMARY-md

        Skill
        ActiveOpen source ↗

        A cheat sheet that stops AI agents from scanning your whole repo and saves you tokens.

        License: CC0-1.0
        • agent-context
        • agent-tools
        • ai-agents
        • ai-coding
        • claude-code
        github

        Install git clone https://github.com/toshon-jennings/SUMMARY-md ~/.claude/skills/SUMMARY-md

        Resourcemeasured growth
        0GitHub starsstable

      Listed without a public metric

      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
        UnknownLast commit: unavailable

        Semantic context compression and cognitive memory layer for LLM swarms.

        mcpmetric not publishedOpen source ↗

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

        —No public metric provided
      2. 2

        MCP
        UnknownLast commit: unavailable

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

        mcpmetric not publishedOpen source ↗

        —No public metric provided
      3. 3

        MCP
        UnknownLast commit: unavailable

        LLM caching proxy (x402 USDC on Base) - exact + semantic cache. Free health.

        mcpmetric not publishedOpen source ↗

        Remote server, to be declared in the MCP configuration https://cache.api.ainode.tech/mcp

        —No public metric provided
      4. 4

        MCP
        UnknownLast commit: unavailable

        Cut LLM token costs: count tokens, estimate cost, slim prompts, and pick the cheapest capable model.

        mcpmetric not publishedOpen source ↗

        Install claude mcp add mcp-token-optimizer -- npx mcp-token-optimizer

        —No public metric provided