claude-context-cost

Introduction

How much each source (CLAUDE.md, rules, skills, memory, tool results) costs in the context of a Claude Code session, counted from the API usage in its transcript. Also a context budget for CI, and the git version of each file a session loaded.

Taken from the repository README

README

Loading the full README. The saved excerpt is shown below.

How much each source (your CLAUDE.md, rules, skills, memory, tool results) costs in the context of a Claude Code session, counted from the API usage recorded in its transcript, not estimated from characters. For Claude Code users who want to know what fills their context. Or try it in the browser: choose one of your transcripts, or run the synthetic example. The library runs in the page (Pyodide); your file is never uploaded. Reads only the transcripts under ~/.claude/projects on your machine. Nothing is sent anywhere. The numbers are tokens, not dollars.