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.
Latest release v1.0.1 · 7 Jun 2026
4 files for Claude Code: adr, sync-memory, ContextTax, ContextTax CLAUDE.md — 400 tokens loaded in every session.
CLAUDE.md A 400 tok .claude/settings.json A — .claude/commands/adr.md A 11 tok .claude/commands/sync-memory.md A 14 tok These files are PavelTkachenk0/ContextTax's own configuration — they tell Claude Code how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.