History

Gabriel Peal 1b8cc8b625 [App Server] Add more session metadata to listConversations (#6337 ) This unlocks a few new product experience for app server consumers		2025-11-06 17:13:24 -05:00
..
src	[App Server] Add more session metadata to listConversations (#6337 )	2025-11-06 17:13:24 -05:00
tests	chore: move relevant tests to app-server/tests/suite/v2 (#6289 )	2025-11-06 10:53:17 -08:00
Cargo.toml	Add feedback upload request handling (#5682 )	2025-10-27 05:53:39 +00:00
README.md	docs: add barebones README for codex-app-server crate (#4671 )	2025-10-03 09:26:44 -07:00

README.md

codex-app-server

codex app-server is the harness Codex uses to power rich interfaces such as the Codex VS Code extension. The message schema is currently unstable, but those who wish to build experimental UIs on top of Codex may find it valuable.

Protocol

Similar to MCP, codex app-server supports bidirectional communication, streaming JSONL over stdio. The protocol is JSON-RPC 2.0, though the "jsonrpc":"2.0" header is omitted.

Message Schema

Currently, you can dump a TypeScript version of the schema using codex generate-ts. It is specific to the version of Codex you used to run generate-ts, so the two are guaranteed to be compatible.

codex generate-ts --out DIR