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ContextTax
Measure the context-window tax an MCP server charges your AI agent — the real token cost of its tool schemas + responses. Ground truth (Anthropic count_tokens) or keyless estimate. Cross-platform single-file CLI.
5stars
0forks
C#
ai-agentsanthropicbenchmarkclaudeclicontext-engineeringcontext-windowllmmcpmodel-context-protocoltaxtoken-counter
Quality signals
ActiveNo testsNo CIThin docsNo licenseNew
InstallMCP + SKILLInstall as a Claude Code skill
Universal installANY TOOL
$ npx skillcity@latest PavelTkachenk0/ContextTaxAuto-detects the skill or MCP server in this repo and installs it for Claude Code, Codex, Cursor, Cline, OpenCode, Gemini CLI, Anti-Gravity, OpenClaw and Hermes.
Requires Node.js 18+ (ships with npx).
Or install manually
# Install into ~/.claude/skills/ mkdir -p ~/.claude/skills/contexttax curl -fsSL https://raw.githubusercontent.com/PavelTkachenk0/ContextTax/main/SKILL.md -o ~/.claude/skills/contexttax/SKILL.md
Loading README…
Ask a simulated agent to run this skill. It loads the real SKILL.md and reasons over your task with NVIDIA.
contexttax — sandboxAI sandbox
Pick a quick prompt below or type your own — watch the agent execute this skill step by step.
guest@skillcity:~$Try a prompt