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

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Article

TL;DR

Ctx adds a unified /resume command that normalizes and replays session context across Claude Code and Codex.

Key Takeaways

  • Normalizes divergent session formats between Claude Code (JSONL) and Codex (SQLite+JSONL)
  • Cross-provider resumes pay full cache miss — no prompt caching across different model families
  • Neither Claude Code nor Codex expose raw thinking tokens; replay fidelity is inherently limited

Discussion

Top comments:

  • [realdimas]: Neither Claude nor OpenAI expose raw thinking tokens — first-party CLIs hold an opacity moat
  • [giancarlostoro]: Separate memories per device across Claude Code sessions makes multi-machine work painful
  • [LeoPanthera]: Has never used /resume once — most developers just start fresh sessions each time

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