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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101 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

    MCP
    Active

    MCP server and proxy that compresses LLM prompts, tool output, and replies to cut token cost.

    ↓ 171 downloads/weekRustLicense: MPL-2.0

      mcpmeasured growthOpen source ↗

      Install claude mcp add llmtrim -- npx @llmtrim/cli

      222GitHub stars+6 (+2.8 %)
    • 2

      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
    • 3

      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
      • 4

        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
        • 5

          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
          • 6

            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
            • 7

              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
              • 8

                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
                • 9

                  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
                  • 10

                    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
                    • 11

                      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
                      • 12

                        CLI
                        Active

                        CLI proxy that reduces LLM token consumption by 60-90% on common dev commands. Single Rust binary, zero dependencies

                        RustLicense: Apache-2.0
                        • agentic-coding
                        • ai-coding
                        • anthropic
                        • claude-code
                        • cli

                        githubmeasured growthOpen source ↗

                        78 241GitHub stars+697 (+0.90 %)
                      • 13

                        MCP
                        Active

                        Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 20% fewer tokens for coding agents, 60-95% fewer tokens for JSON, same answers. Library, proxy, MCP server.

                        PythonLicense: Apache-2.0
                        • agent
                        • ai
                        • anthropic
                        • claude-code
                        • compression

                        githubmeasured growthOpen source ↗

                        68 350GitHub stars+630 (+0.93 %)
                      • 14

                        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 stars+1 (+3.3 %)
                      • 15

                        MCP
                        Active

                        Context engineering for AI agents. ~80% fewer tokens. Fix tool overload. Skills and memory with in-process BM25 and semantic retrieval. Progressive Disclosure. No vector DB.

                        TypeScriptLicense: MIT
                        • accuracy
                        • agents
                        • claude-skills
                        • context
                        • harness

                        githubmeasured growthOpen source ↗

                        433GitHub stars+6 (+1.4 %)
                      • 16

                        Skill
                        Dormant

                        Pith is the hook that makes Claude Code sessions last 3x longer.

                        PythonLicense: MIT
                        • anthropic
                        • claude-code
                        • claude-code-plugin
                        • llm-tools
                        • token-optimization

                        githubmeasured growthOpen source ↗

                        Install /plugin marketplace add abhisekjha/pith

                        98GitHub starsstable
                      • 17

                        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
                      • 18

                        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
                      • 19

                        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
                      • 20

                        Skill
                        Dormant

                        A Claude Code skill for web report decks — richer ECharts charts, one file per slide (edit one page, save tokens), and complex structure diagrams. 16:9 & vertical, PDF/image export.网页版 PPT 汇报的 Claude Code skill：ECharts 把数据画得更好看、每页一个文件改一页省…

                        HTMLLicense: MIT
                        • ai
                        • anthropic
                        • claude
                        • claude-code
                        • claude-skills

                        githubmeasured growthOpen source ↗

                        Install git clone https://github.com/myunwang/ppt-report-skills ~/.claude/skills/ppt-report-skills

                        81GitHub starsstable
                      • 21

                        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
                      • 22

                        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
                      • 23

                        MCP
                        Dormant

                        Audit MCP servers, skills, and CLAUDE.md bloat eating your Claude Code context window.

                        PythonLicense: MIT
                        • claude
                        • claude-code
                        • claude-code-plugin
                        • cli
                        • context-window

                        githubmeasured growthOpen source ↗

                        35GitHub starsstable
                      • 24

                        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

                      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