dsh-codex-auth-bridge

Reuse the Codex CLI's ChatGPT OAuth login in DeepSeek Harness (DSH).

The package is a Host Cordis bundle. It reads Codex's auth.json, keeps the OAuth token fresh through pi-ai's native openai-codex OAuth implementation, synchronizes the access token into DSH's credential service, and configures pi-ai's built-in openai-codex model route.

It does not contain, upload, or commit any token.

Requirements

• Node.js 22.19 or later
• A DSH installation using the dsh-llm-pi-ai adapter
• Codex logged in with ChatGPT (~/.codex/auth.json contains auth_mode: "chatgpt")

Install

Run this on each device after logging in with Codex:

npx --yes github:shaomingbo/dsh-codex-auth-bridge#v0.1.0

The installer:

1. adds this package to ~/.dsh/profiles/web/package.json;
2. adds dsh-codex-auth-bridge to that profile's dsh.profile.bundles list;
3. runs pnpm install in the profile.

Restart dsh web afterward. The model picker will include the models exposed by pi-ai's installed openai-codex catalog.

Use another profile or source when needed:

npx --yes github:shaomingbo/dsh-codex-auth-bridge#v0.1.0 --profile web
node ./bin/install.js --source file:../../packages/dsh-codex-auth-bridge

How it works

At startup, every ten minutes, and immediately before an openai-codex LLM stream:

1. read ${CODEX_HOME:-~/.codex}/auth.json;
2. decode the access-token expiry;
3. refresh an expired or soon-to-expire token through @earendil-works/pi-ai;
4. atomically write rotated tokens back to Codex's auth.json;
5. store the current access token under OPENAI_CODEX_ACCESS_TOKEN using DSH's credential service.

The bundle also configures this composition base:

llm-pi-ai:
  providers:
    openai-codex:
      apiKeyEnv: OPENAI_CODEX_ACCESS_TOKEN

Because api is intentionally omitted, dsh-llm-pi-ai reuses pi-ai's provider-native openai-codex-responses transport instead of treating the ChatGPT backend as a generic OpenAI endpoint.

Environment overrides

Variable	Default	Purpose
DSH_CODEX_AUTH_PATH	${CODEX_HOME:-~/.codex}/auth.json	Exact Codex auth file
DSH_CODEX_CREDENTIAL_REF	OPENAI_CODEX_ACCESS_TOKEN	DSH credential reference
DSH_CODEX_PROVIDER_ID	openai-codex	Provider route preflighted before requests
DSH_CODEX_REFRESH_MARGIN_MS	300000	Refresh margin before JWT expiry
DSH_CODEX_SYNC_INTERVAL_MS	600000	Background synchronization interval

If you override DSH_CODEX_CREDENTIAL_REF, also update apiKeyEnv in the bundle or your DSH settings.

Security notes

• Codex's auth.json contains a rotating refresh token and must remain private.
• DSH's local credential provider writes the synchronized access token to $DSH_HOME/.credentials.yaml, normally with mode 0600.
• The plugin never logs token values.
• A compare-before-write check avoids overwriting a newer refresh token if Codex refreshes concurrently.

Development

npm install
npm test
npm run check

License

MIT