[lawrencecchen]

Summary

• add authenticated /v1/models support for Codex model discovery
• forward through the selected Stack-vault account
• preserve account cooldown/failover behavior
• prevent Codex startup from logging a Next.js HTML 404

Test plan

• focused CodeRouter suite: 12 passed
• bun run typecheck

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Summary by cubic

Expose an authenticated /v1/models endpoint in CodeRouter that proxies Codex model discovery through the selected vault-backed Codex account. Preserves cooldown/failover behavior and stops the Codex startup 404 log.

• New Features

  • Proxies to https://chatgpt.com/backend-api/codex/models, forwarding query params and using the account’s accessToken.
  • Retries on 429s and marks account cooldown before failing over to the next account.
  • Adds a focused test for the models proxy.

• Bug Fixes

  • Serve the models route dynamically to prevent a Next.js HTML 404 during Codex startup.

^{Written for commit cfe00a5. Summary will update on new commits.}

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: 1433034f-ea4b-4b3d-9260-ae3673739749

📥 Commits

Reviewing files that changed from the base of the PR and between 81ae632 and cfe00a5.

📒 Files selected for processing (3)

• web/app/v1/models/route.ts
• web/services/coderouter/codexProxy.ts
• web/tests/coderouter-models-proxy.test.ts

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📝 Walkthrough

Walkthrough

The change adds a dynamic /v1/models route that forwards requests to a Codex proxy. The proxy authenticates requests, selects and refreshes accounts, forwards queries and headers, retries rate-limited accounts, and returns model data or an error.

Changes

Codex models proxy

Layer / File(s)	Summary
Codex proxy request handling web/services/coderouter/codexProxy.ts	Adds the Codex models endpoint and proxy handler. The handler authenticates requests, selects usable accounts, refreshes credentials, forwards requests, retries rate-limited accounts, and returns errors when no account is usable.
Models route integration and validation web/app/v1/models/route.ts, web/tests/coderouter-models-proxy.test.ts	Adds the dynamic GET route and tests authenticated request forwarding, query propagation, upstream status, and model payloads.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Sequence Diagram(s)

sequenceDiagram
  participant Client
  participant ModelsRoute
  participant proxyCodexModels
  participant CodexModelsEndpoint
  Client->>ModelsRoute: Send authenticated GET request
  ModelsRoute->>proxyCodexModels: Delegate request
  proxyCodexModels->>proxyCodexModels: Authenticate and select account
  proxyCodexModels->>CodexModelsEndpoint: Forward query and headers
  CodexModelsEndpoint-->>proxyCodexModels: Return models or rate limit
  proxyCodexModels-->>ModelsRoute: Return response
  ModelsRoute-->>Client: Return response

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/coderouter-models

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