Show HN: Ctx – a /resume that works across Claude Code and Codex

· ai tools open-source · Source ↗

Article

TL;DR

CLI tool normalizing /resume context across Claude Code and Codex sessions.

Key Takeaways

  • Solves context portability when switching providers mid-task without each harness’s native resume.
  • Prompt caching won’t work cross-provider — every resume pays full context cost again.
  • Few developers ever use /resume; unclear whether the problem is widespread enough to matter.

Discussion

Top comments:

  • [LeoPanthera]: Never used /resume once — make a change, document it, start fresh each session
  • [buremba]: Prompt caching breaks cross-provider — just open a PR for the other harness to review
  • [realdimas]: Both Claude Code and Codex redact raw thinking tokens — cross-provider context is lossy

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