# Blog: Claude Code and Codex CLI guides

> Where Claude Code and Codex CLI keep your sessions, what they cost, how usage limits work and how to undo changes. Practical guides, checked against current versions.

Source: https://ccassist.dev/blog/
Last updated: 2026-10-01

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[![A terminal window beside a wide horizontal meter: small cyan segments fill up one after another inside a long amber bar that is nearly full.](/blog/claude-code-weekly-limit-hero.webp)LatestGuideClaude Code weekly limit and 5-hour limit, explainedHow the Claude Code weekly limit and 5-hour session limit work on Pro and Max, when each resets, how to check what's left, and what to do at the limit.Read the post 1 October 2026 · 10 min read](/blog/claude-code-weekly-limit/)

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* [![A terminal window beside a wide horizontal meter: small cyan segments fill up one after another inside a long amber bar that is nearly full.](/blog/claude-code-weekly-limit-hero.webp)Guide1 October 2026Claude Code weekly limit and 5-hour limit, explainedHow the Claude Code weekly limit and 5-hour session limit work on Pro and Max, when each resets, how to check what's left, and what to do at the limit.Read ](/blog/claude-code-weekly-limit/)
* [![A terminal session timeline with one earlier turn highlighted and an arrow rolling the editor's file back to that point, beside a separate stack of file copies.](/blog/undo-claude-code-changes-hero.webp)How-to1 October 2026How to undo Claude Code changes (rewind, git, recovery)Undo Claude Code changes with /rewind checkpoints, git and VS Code Local History, and recover files a Bash command deleted. Covers Codex CLI too.Read ](/blog/undo-claude-code-changes/)
* [![A file tree of session files in a dark editor window, with the older files at the bottom fading away while the newest stay bright.](/blog/where-claude-code-stores-conversations-hero.webp)Guide1 October 2026Where Claude Code stores conversations (and why they vanish)Claude Code saves each session as a JSONL file in ~/.claude/projects and deletes it after 30 days. Exact paths per OS, the file format, and how to keep them.Read ](/blog/where-claude-code-stores-conversations/)
* [![An editor window with an AI chat panel on one side and a sidebar of small extension panels: a session list, a diff view and a quota meter.](/blog/best-claude-code-vscode-extensions-2026-hero.webp)Roundup5 July 2026Best Claude Code VS Code extensions in 2026The Claude Code VS Code extensions worth installing in 2026, grouped by job, with install counts and update dates checked on 1 October 2026.Read ](/best-claude-code-vscode-extensions-2026/)
* [![A terminal window with a usage table on the left and an editor window with a session list, chart and diff on the right, both reading the same stack of session files.](/blog/ccassist-vs-ccusage-hero.webp)Comparison5 July 2026CCAssist vs ccusage: which Claude Code usage tool?ccusage is a free CLI for Claude Code and Codex usage reports; CCAssist puts usage beside chat history and diffs in VS Code. Tested side by side on one week.Read ](/compare/ccassist-vs-ccusage/)
* [![A terminal session on the left feeds stacked token bars into an editor panel on the right that shows a daily usage chart and a quota bar filling toward its limit.](/blog/claude-code-usage-tracker-hero.webp)Feature guide5 July 2026Claude Code usage tracker: tokens, cost per day, quotaHow Claude Code usage is measured: the four token fields in each session file, how cost estimates use API prices, what /usage shows, and a daily cost script.Read ](/claude-code-usage-tracker/)
* [![A terminal listing dated session files beside an editor that shows one of those sessions as a readable conversation with a diff.](/blog/codex-cli-history-viewer-hero.webp)Feature guide5 July 2026Codex CLI history: find, resume and read old sessionsWhere Codex CLI keeps session history, how codex resume and codex fork find it, jq one-liners for rollout files, and viewing it all in VS Code.Read ](/codex-cli-history-viewer/)
* [![A terminal session list, a stack of session files and an editor side panel all pointing back to one earlier conversation.](/blog/view-claude-code-chat-history-hero.webp)How-to5 July 2026How to view Claude Code chat historyView Claude Code chat history: claude --continue, --resume and the /resume picker, jq one-liners for the JSONL files, and searching every project in VS Code.Read ](/how-to/view-claude-code-chat-history/)