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

Sort by

101 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
    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
  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

    MCP
    Dormant

    Analyze your MCP setup: token costs, grades, duplicates, and optimization tips

    ↓ 62 downloads/weekTypeScriptLicense: MIT

      mcpmeasured growthOpen source ↗

      Install claude mcp add mcp-checkup -- npx mcp-checkup

      1GitHub starsstable
    • 4

      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
      • 5

        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
        • 6

          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
        • 7

          CLI
          Active

          Usage-aware status line for Claude Code: session & weekly rate-limit gauges with reset countdowns and a precise context-window meter, plus tokens, git & weather. Template-driven and extensible — set it up by chatting with Claude or via a…

          Python
          • ccusage-alternative
          • claude-code
          • claude-code-skills
          • claude-code-statusline
          • context-window

          githubmeasured growthOpen source ↗

          1GitHub starsstable
        • 8

          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
        • 9

          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
          • 10

            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
          • 11

            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
          • 12

            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
            • 13

              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
              • 14

                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
                • 15

                  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
                  • 16

                    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
                    • 17

                      Other
                      Active

                      Open-source TypeScript terminal coding agent for DeepSeek-V4 — builds on DeepSeek's strong price-performance and ultra-cheap cache pricing, engineering byte-stable prefixes and cache-reusing forks so cross-session memory and a continuous…

                      TypeScriptLicense: MIT
                      • ai-agent
                      • cli
                      • coding-agent
                      • deepseek
                      • llm

                      githubestimated momentumOpen source ↗

                      1 254GitHub 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—
                    • 19

                      Skill
                      Active

                      Installable agentic skills (SKILL.md) for Claude Code, Cursor, Codex, Gemini & Antigravity — 292+ product, efficiency, and common-sense skills. npx major-ai-skills

                      HTMLLicense: MIT
                      • agent-skills
                      • agentic-skills
                      • ai-agent-skills
                      • ai-agents
                      • ai-coding

                      githubestimated momentumOpen source ↗

                      Install git clone https://github.com/alivirgo/Major-AI-Skills ~/.claude/skills/Major-AI-Skills

                      1GitHub stars—
                    • 20

                      Agent
                      Active

                      Experimental no-install semantic language for AI agents: typed action/state, safe NL/JSON fallback, and falsifiable public evals. Try the one-file probe.

                      PythonLicense: Apache-2.0
                      • a2a
                      • agent-communication
                      • agent-protocol
                      • agentic-ai
                      • ai-agents

                      githubestimated momentumOpen source ↗

                      1GitHub 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

                    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

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

                      mcpmetric not publishedOpen source ↗

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

                      —No public metric provided
                    4. 4

                      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