melvin (@melvindvivas) shipped JSONL Viewer v1.3.4: Codex subagent traces now nest under the parent run that spawned them, with MAIN/SUBAGENT labels, parent-child navigation, and per-turn model plus reasoning effort.
OpenAI Codex/ChatGPT lead Tibo (@thsottiaux) clarified that third-party clients using Sign in With ChatGPT for Codex is not an approved use. OpenAI supports pure open-source clients and partners with existing relationships; others must reach out. The clarification matters for third-party Codex clients and proxy tooling compliance.
Julius (@jullerino) announced a new Limits section under Usage in T3 Chat / T3 Code: add a CLI Proxy hub for multi-account setups, and view/redeem banked Codex usage resets inside the app. Aimed at heavy Codex and CLI-proxy users managing quotas.
Marwan Atef (@Marwan_3atef) reported Supernova shipping Editor MCP in public beta (free for now): after sign-in and picking a design system, one URL at mcp.supernova.io/mcp lets Cursor, Claude, and Codex edit docs, tokens, components, skills, and pipelinesโnot just read them. The company blog frames write access as the first real agentic design-system step beyond read-only MCP.
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