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Tools2026-08-21 · source-backed
CLI, IDE extension, macOS app, and Codex Web all sit on the same harness, linked by a bidirectional JSON-RPC-over-stdio process that hosts core threads and translates client requests into Codex operations. Partners have written clients in Go, Python, TypeScript, Swift, and Kotlin, and TypeScript definitions generate straight from the Rust protocol. OpenAI OpenAI names App Server the first-class integration path it will maintain and refactored its own TUI onto it, which unlocks running the agent on a remote machine while the laptop sleeps.
Each link below shares sources, entities, or timing with this story.
Anthropic partners with OpenAI / Shared entities / Same source domain / Earlier coverage / Tension
Linked by a graph relationship (Anthropic partners with OpenAI); both cover CLI, Codex, IDE, OpenAI; reported by the same outlet (openai.com).
OpenAI uses Claude Code / Shared entities / Shared topic / Earlier coverage
Linked by a graph relationship (OpenAI uses Claude Code); both cover CLI, Codex, Rust, TUI; overlapping topics (agent, codex, harness).
Hermes Agent supports OpenAI / Shared entities / Shared topic / Earlier coverage
Linked by a graph relationship (Hermes Agent supports OpenAI); both cover CLI, Codex, OpenAI, Rust; overlapping topics (agent, codex).
openclaude uses OpenAI / Shared entities / Shared topic / Earlier coverage / Tension
Linked by a graph relationship (openclaude uses OpenAI); both cover Codex, IDE, Rust, TUI; overlapping topics (agent, codex).
OpenAI released Luna / Shared entities / Same source domain / Shared topic / Earlier coverage
Linked by a graph relationship (OpenAI released Luna); both cover Codex, OpenAI, Python; reported by the same outlet (openai.com).
OpenAI released Codex CLI / Shared entities / Same source domain / Shared topic / Earlier coverage
Linked by a graph relationship (OpenAI released Codex CLI); both cover Codex, OpenAI, TUI; reported by the same outlet (openai.com).
OpenAI supports MCP / Shared entities / Shared topic / Earlier coverage
Linked by a graph relationship (OpenAI supports MCP); both cover CLI, Codex, Python, TypeScript; overlapping topics (agent, extension).
OpenAI released Daybreak / Shared entities / Same source domain / Shared topic / Earlier coverage
Linked by a graph relationship (OpenAI released Daybreak); both cover Codex, OpenAI, Python; reported by the same outlet (openai.com).