hzhang
d075fc408a
Wires the host's mirror hook end-to-end: FindCodexSessionFile walks ~/.codex/sessions/<YYYY>/<MM>/<DD>/rollout-*-<thread_id>.jsonl to prove the path for the captured thread_id, then logs the no-op. Real rewrite is deferred to v2: codex keys tool calls by `call_<id>` not the `toolu_<id>` Plexum's canonical block format uses, so a v1 rewriter would never find a matching id. When tool-call id round-trip through codex's native surface lands, the rewriter plugs into this file's path resolver. Also rescues cmd/plexum-openai-provider-plugin/main.go from .gitignore (the bare 'plexum-openai-provider-plugin' pattern was too greedy — it matched the source directory). Tightened to '/plexum-openai-provider-plugin' + '/bin/' so only built binaries get ignored.
Plexum-openai-provider
Plexum ProviderPlugin that wraps the local codex CLI binary (OpenAI
Codex CLI ≥ 0.135). Same CLI-driven pattern as Plexum-gemini-provider
and Plexum-anthropic-provider's contractor mode.
Status
v0.1: subprocess-per-turn, JSONL stream parsing, per-workspace
session continuity via codex exec resume <thread_id>. Single model
codex advertised by default; operator can override.
Auth
No API key in this plugin's config. The codex CLI handles auth via
~/.codex/ (ChatGPT login OR OPENAI_API_KEY). Run codex login
once (or set env) and this plugin just shells out.
Install
cd ~/Plexum-openai-provider
./scripts/install.sh
Operator notes in ~/.plexum/plugins/plexum-openai-provider/config.json:
{
"binary": "/home/<you>/.local/bin/codex",
"extra_args": []
}
(absolute path is required when the daemon runs under systemd — systemd doesn't inherit shell PATH).
Then .plugins.allow += ["plexum-openai-provider"] and:
plexum agent-add --model codex my-agent
systemctl --user restart plexum
plexum say --agent-id my-agent --session-id $(plexum new-session --agent-id my-agent) "hello"
How it works
Per Plexum turn:
codex exec [resume <thread_id>] \
--skip-git-repo-check \
--dangerously-bypass-approvals-and-sandbox \
--json \
[--model <m>] \
"<last user message>"
cwd = <agent workspace>, stdin = /dev/null (codex would otherwise
hang waiting for additional input). Codex emits JSONL:
{"type":"thread.started","thread_id":"..."}
{"type":"turn.started"}
{"type":"item.completed","item":{"id":"...","type":"agent_message","text":"..."}}
{"type":"turn.completed","usage":{"input_tokens":...,...}}
thread.started.thread_id is captured into
<workspace>/.plexum-codex-session so the next turn passes
exec resume <id> instead of exec. item.completed of type
agent_message becomes text_delta; turn.completed.usage populates
the canonical Usage on message_end.
ChatGPT account vs API key
ChatGPT-account installs only support the default model; explicit
--model gpt-5-codex etc. returns 400 invalid_request_error. With
an API key install, operator can declare more model ids via
config.supported_models + config.model_args.
License
Same as Plexum.