setup

name	setup
description	Frictionless Wenlan setup for Codex. Detects a missing local runtime, installs or repairs it, and verifies the plugin to MCP to local runtime round-trip. Run when the user says "set up wenlan", "is wenlan working", or "fix wenlan".
allowed-tools	["Bash","mcp__wenlan__doctor","mcp__wenlan__context"]
user-invocable	true

/setup

Self-healing setup for Codex. Default backend is local memory: no local model, no API key, no prompt ceremony. Local model and Anthropic key are optional upgrades after the basic path works.

Steps

Run in order. Stop and report at the first failure that needs human attention. Otherwise, push through automatically.

1. Health probe

for i in 1 2 3; do
  curl -fsS -m 3 http://127.0.0.1:7878/api/health && break
  sleep 1
done

• 200 OK: continue to version drift probe.
• Anything else: continue to bootstrap.

2. Version drift probe

Compare daemon version vs plugin manifest version:

PLUGIN_JSON="${CODEX_PLUGIN_ROOT:-plugin-codex}/.codex-plugin/plugin.json"
[ -r "$PLUGIN_JSON" ] || PLUGIN_JSON=".codex-plugin/plugin.json"
if command -v python3 >/dev/null 2>&1 && [ -r "$PLUGIN_JSON" ]; then
  RESP="$(curl -fsS -m 3 http://127.0.0.1:7878/api/health)"
  DAEMON_VER="$(printf '%s' "$RESP" | python3 -c 'import json,sys; print(json.load(sys.stdin).get("version",""))')"
  EXPECTED_VER="$(python3 -c 'import json,sys; print(json.load(open(sys.argv[1])).get("version",""))' "$PLUGIN_JSON")"
  RELEASE_VER="${EXPECTED_VER%%+*}"
  printf 'daemon=%s expected=%s release=%s\n' "$DAEMON_VER" "$EXPECTED_VER" "$RELEASE_VER"
else
  echo "version_check=skipped"
fi

• Same version: continue to doctor.
• If the probe cannot run because the runtime is down: continue to bootstrap.
• If PLUGIN_JSON is unreadable or python3 is missing: continue to doctor; Codex will keep using this slice until the plugin cache is updated.
• If mismatch, repair the runtime:

PLUGIN_JSON="${CODEX_PLUGIN_ROOT:-plugin-codex}/.codex-plugin/plugin.json"
[ -r "$PLUGIN_JSON" ] || PLUGIN_JSON=".codex-plugin/plugin.json"
EXPECTED_VER="$(python3 -c 'import json,sys; print(json.load(open(sys.argv[1])).get("version",""))' "$PLUGIN_JSON")"
RELEASE_VER="${EXPECTED_VER%%+*}"
curl -fsSL https://raw.githubusercontent.com/7xuanlu/wenlan/v${RELEASE_VER}/install.sh | bash
export PATH="$HOME/.wenlan/bin:$PATH"
wenlan setup --basic
wenlan background on

Then continue to the health and version re-probe below. The installer deliberately targets the latest stable runtime. Do not downgrade a newer runtime to match a stale plugin cache.

3. Bootstrap

Detect whether the wenlan CLI is on PATH:

command -v wenlan >/dev/null 2>&1 && echo present || echo absent

If absent, install and configure local memory:

curl -fsSL https://raw.githubusercontent.com/7xuanlu/wenlan/v0.14.1/install.sh | bash
export PATH="$HOME/.wenlan/bin:$PATH"
wenlan setup --basic
wenlan background on

If present but the local runtime is down:

wenlan setup --basic 2>/dev/null || true
wenlan background on

wenlan setup --basic is idempotent. wenlan background on starts the managed background process.

4. Re-probe health and version

for i in 1 2 3 4 5; do
  curl -fsS -m 3 http://127.0.0.1:7878/api/health && break
  sleep 1
done

If the local runtime still is not reachable after about five seconds, surface the error and stop. Likely causes: launchd load failure, port 7878 already in use, or a local runtime crash.

Once healthy, repeat the version comparison from step 2. If the versions still differ, stop instead of claiming setup succeeded:

Runtime and plugin versions still differ after repair; update the Wenlan plugin,
restart Codex, then run /wenlan:setup again.

This usually means the runtime is newer than the plugin cached by the current Codex process. Updating the plugin is safer than silently downgrading the runtime, and the restart is required before this session can load new plugin code.

5. Doctor

Call the Wenlan MCP doctor tool.

doctor()

Expected: local memory configured. Capture the mode string for the final report.

6. MCP round-trip

Call the Wenlan MCP context tool with a small limit.

context(limit=3)

If it fails, report: "wenlan-mcp did not respond through Codex. Start a new Codex thread after reinstalling the plugin so Codex respawns the MCP server."

7. Ready report

Print:

Wenlan ready.
  Runtime:  up on 127.0.0.1:7878
  Mode:     <mode from doctor()>
  MCP:      connected
  Data:     ~/.wenlan/
  Try:      /brief, /capture <thing>

Optional upgrades

Mention these only if the user asks for richer synthesis:

• wenlan models install for local model-backed distillation.
• wenlan keys set anthropic for stronger synthesis.

Codex note

This Codex slice has no session-start hook. /setup is the explicit health and version check until Codex exposes a lifecycle hook this plugin can use.