ECC and the Claude Code context window: from 200k to 70k tokens
With everything on, ECC shrinks the Claude Code context window from 200k to about 70k tokens, per its README. How to avoid it.
The Claude Code context window drops from 200 thousand to about 70 thousand tokens when you turn everything on in ECC (Everything Claude Code), according to the project's own README. It is a cost almost nobody mentions, but it has a fix: install only what you need. Here are the cost, the three pieces that are worth it and how to start.
How much context ECC takes
The figure comes from the project's README, dated October 5, 2026, and WAiBOT did not measure it. The math is simple: from 200 thousand tokens to about 70 thousand you lose about 130 thousand, 65% of the Claude Code context window, before writing a line. That is why you shouldn't turn on all 293 skills at once.
The three ECC pieces that are worth it
- Plan: the planner agent gives you the plan before a single line of code, with files, risks and order of steps.
- Test: it writes tests that fail on purpose and then implements until they pass.
- Remember: it learns your habits, but only with your permission; what is learned without review doesn't become a rule.
ECC also launches the reviewer in a clean session, without your history, like a new colleague. The reason: nobody corrects well what they just wrote, and an AI reviewing its own work in the same conversation tends to justify it.
An important limit: no independent measurement
As far as we found, nobody has independently measured that ECC improves code. What is defensible is that planning first, testing first and reviewing with fresh eyes are already good practices; ECC packages and automates them.
How to apply it in your business?
Start with three skills, not 293: the planner, test-first and the review. Use it for a week on a real project and decide. If it saves you redoing work, add more; if not, uninstall it. For the whole method, the safe install and the risks, read the full breakdown of Everything Claude Code.
Frequently asked questions
How much context does ECC use?
According to the project's README, with everything on the window drops from 200 thousand to about 70 thousand tokens.
How do I avoid that cost?
Install selectively: start with three skills instead of the 293 available.
Does ECC improve Claude's code?
There is no independent measurement showing it.
Conclusion
The Claude Code context window is ECC's hidden cost: from 200 thousand to about 70 thousand tokens with everything on. Start with three skills, use it for a week and decide. Tell me in the comments what fails most for you (planning, testing or reviewing) and I'll tell you where to start.