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33 lines
1.3 KiB
Markdown
33 lines
1.3 KiB
Markdown
# Codex
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Reviewed on 2026-03-20 from `../happy-adjacent/research/codex` at commit
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`ec32866c379405a28b58c0064c857fb60ed3c735`.
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## Why it matters
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Codex is the strongest backend protocol reference in this set.
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- typed app-server contract
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- explicit `thread`, `turn`, and `item` model
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- approvals are server requests, not ad hoc message events
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- sandbox policy is much richer than OpenCode's
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- resume, fork, and live replay are clearly first-class concerns
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## Current take
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- If Happy wants a server-side session protocol, Codex is the best reference.
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- If Happy wants a UI/session transcript shape, OpenCode still feels stronger.
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- The best outcome may be OpenCode-like transcript state with Codex-like approval and runtime semantics.
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## Important repo files
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- `../happy-adjacent/research/codex/codex-rs/app-server/README.md`
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- `../happy-adjacent/research/codex/codex-rs/app-server-protocol/src/protocol/v2.rs`
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- `../happy-adjacent/research/codex/codex-rs/app-server/src/lib.rs`
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- `../happy-adjacent/research/codex/codex-rs/app-server/src/transport.rs`
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- `../happy-adjacent/research/codex/codex-rs/app-server/src/thread_state.rs`
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- `../happy-adjacent/research/codex/codex-rs/app-server/src/codex_message_processor.rs`
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See `docs/competition/codex/message-protocol.md` and
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`docs/competition/codex/sources.md`.
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