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

Activity

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90 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

    Skill
    Dormant

    Agent context gate for Codex, Claude Code, Copilot, MCP, Cursor, Cline, Gemini and Windsurf repos

    TypeScript
    • agent-readiness
    • ai-security
    • claude-agents
    • claude-code
    • cli

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/grnbtqdbyx-create/contextforge ~/.claude/skills/contextforge

    1GitHub starsstable
  2. 2

    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
  3. 3

    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
  4. 4

    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
    • 5

      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
    • 6

      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
      • 7

        MCP
        Active

        Context GC for LLM agents: offload large tool outputs and recall them to save tokens.

        PythonLicense: Unlicense

          mcpmeasured growthOpen source ↗

          Install claude mcp add lethe -- uvx lethe-llm-context

          0GitHub starsstable
        • 8

          Skill
          Dormant

          Drop-in Cursor rules to cut AI response tokens (no filler/hedging, preserve code + technical strings). Includes local, reproducible benchmarks.

          JavaScriptLicense: MIT
          • benchmarking
          • bonsai
          • cursor
          • cursor-rules
          • developer-tools

          githubmeasured growthOpen source ↗

          Install git clone https://github.com/marcomondelli/bonsai ~/.claude/skills/bonsai

          0GitHub starsstable
        • 9

          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
          • 10

            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
            • 11

              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
              • 12

                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—
              • 13

                Skill
                Active

                Claude Code skill — delegate coding tasks to Gemini CLI and supervise via git diff

                Python
                • claude
                • claude-code
                • claude-skill
                • claude-skill-recommended
                • claude-skills

                githubestimated momentumOpen source ↗

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

                12GitHub stars—
              • 14

                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

                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