[fixfon]

A custom Codex route can still return subscription limits from a ChatGPT login stored in its home directory. Publishing those limits attributes another account's quota to the custom provider, and a custom provider without a login can instead show a misleading usage-probe failure.

Publish native subscription quota only when the account requires OpenAI authentication, is not an API-key account, and routing is confirmed to use a native OpenAI endpoint. Use the same decision to skip the quota RPC and quota-derived workspace identity. A failed or malformed routing read remains unsupported; it cannot become a confirmed default route. Existing unsupported snapshots also reject streamed limits, so later notifications cannot restore those rows.

Rebuilt from @fixfon's #18622, preserving contributor history and merging main at a71a6c3. This follows the quota-attribution problem in #11515.

Verification:

• Consolidated the original six registered cases with 16 inner scenarios into seven reported cases in one existing fake-CLI test file. Net test additions reduced from 208 to 59 lines; removed the separate usage test file.
• Before: five quota-gating cases failed against main; both native success/failure controls passed. The failures prove an unwanted quota RPC, including the API-key case whose published status was already unsupported.
• After: 121 tests pass across seven focused files, including the public subprocess/JSON-RPC status path and existing unsupported stream/refresh behavior. Scoped server typecheck, targeted lint/format, and whitespace checks pass.
• One independent full-diff round with Opus and Sol completed with no findings. Opus also reran all nine catalog/quota cases successfully.
• No live Codex or proxy-hub account, app/browser, full registry-to-client streamed flow, macOS, Windows, Electron, iOS, Android or real remote connection was verified. Proof uses a temporary fake Codex process and existing server tests.

Routing attribution uses the effective configuration read by the status probe. Explicit URLs are conservatively recognized only for HTTPS on api.openai.com and chatgpt.com; confirmed absent overrides use Codex's native default. Wrappers, network interception and older CLI environment-override behavior were not verified. Managed subscription usage continues through its existing external usage source.

Landing and approval decisions remain with the coordinator. Unmerged.

Models/harness: tests by GPT-6 Astra, implementation by GPT-6.1 Sol, independent reviews by Claude Opus 5.5 and GPT-6 Sol; Codex and Claude harnesses in T3 Code.

Fixes #11873

[macroscopeapp]

Approvability

Verdict: Approved at 33e1bb2

Macroscope's review found this PR approvable — Custom Codex providers no longer probe or display native OpenAI quota unless routing and authentication indicate it applies. The change is limited to usage-status reporting and preserves bounded discovery and sign-in guidance.

^{You can add or adjust custom eligibility rules. Learn more.}

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Walkthrough

Codex now reads the active provider’s base URL and combines it with account authentication data to decide whether to request native rate limits and report usage windows. Tests cover supported and unsupported account and endpoint configurations.

Changes: Codex Native Quota Eligibility

Layer / File(s)	Summary
Read and snapshot the active route apps/server/src/provider/CodexProvider.ts	Codex reads the active provider’s base URL and includes it in the provider snapshot. A failed config read is recorded as null.
Apply quota eligibility to probing and reporting apps/server/src/provider/CodexProvider.ts, apps/server/src/provider/CodexProvider.usage.test.ts, apps/server/src/provider/ProviderRegistry.test.ts	Codex skips rate-limit probing and reports usage as unsupported when account or route data fails eligibility checks. Tests cover supported and unsupported account and endpoint configurations.

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

Change: Bug fix

Merge Risk: Moderate · previous review fb6a9

Some custom providers can still display a ChatGPT login’s quota even though that quota does not represent their usage. Resolve or explicitly accept this misleading status before merging.

Security architecture risk: Low · up to a6904

Quota attribution becomes more restrictive. If routing configuration cannot be read, an unrelated stored account’s quota can still be displayed, but that exposure already existed before this change. No new or expanded security exposure was established.

Retained concerns
No architecture-level concerns identified.

Security review details

Security Blast Radius

• inferred — The demonstrated effect is bounded to native quota and workspace metadata associated with the configured provider and its stored login. The inspected changes do not establish new credential transmission, tenant authority or access to additional accounts.

Security Findings and Attack Paths

• inferred — A custom provider requiring OpenAI authentication can still have stored ChatGPT quota published after a recoverable config/read failure: the failure becomes an undefined endpoint, which passes eligibility. Malformed routing data follows the same classification. This attribution exposure existed in the base, which had no endpoint gate; no introduced or worsened attack path was established.

Trust Boundaries and Controls

• observed — The new control separates possession of a stored account from eligibility to attribute that account’s quota to a provider. Authentication requirements alone are insufficient when a successfully read configuration identifies a non-OpenAI endpoint; both probing and publication enforce the endpoint decision.

Resilience and Maintainability Implications

• observed — Existing recovery logic preserves last-good quota on probeFailed when identity appears unchanged, including cases where identity fields are missing. Explicit unsupported results instead replace prior quota. The partial-identity retention behavior predates this change and remains a limitation of recovery provenance, not a newly introduced concern.

Hardening Proposals

• proposed — Distinguish a confirmed default endpoint from unknown routing caused by read or decode failure. Suppressing native quota for unknown routing would strengthen attribution guarantees; focused recovery tests could verify that the unknown state cannot publish or retain unrelated quota.

Pre-merge checks: 4

Check name	Status	Explanation
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.
Title check		The title is concise, uses the conventional commit format, and accurately identifies the main fix: custom Codex providers no longer report native quota.
Description check		The description explains the problem and change, links the related issue, and gives detailed verification results and limitations. It does not include an explicit maintainer approval comment or explai…

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Explanation

The description explains the problem and change, links the related issue, and gives detailed verification results and limitations. It does not include an explicit maintainer approval comment or explain why the change qualifies for an exemption, so the Scope and approval section is incomplete.

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🧹 Nitpick comments (1)

apps/server/src/provider/ProviderRegistry.test.ts (1)

574-577: 🎯 Functional Correctness | 🔵 Trivial | ⚡ Quick win

Cover the stored ChatGPT login on a custom provider.

The quota test covers missing and API-key accounts only when requiresOpenaiAuth is false. It does not cover a stored ChatGPT account with that setting. Add that case to detect a regression where checkCodexProviderStatus publishes the stored ChatGPT account's native quota for custom-provider traffic.

Suggested test case

         for (const account of [
           { account: null, requiresOpenaiAuth: false },
           { account: { type: "apiKey" as const }, requiresOpenaiAuth: false },
+          {
+            account: {
+              type: "chatgpt",
+              email: "test@example.com",
+              planType: "pro",
+            },
+            requiresOpenaiAuth: false,
+          } as const,
         ]) {

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Review comment at @apps/server/src/provider/ProviderRegistry.test.ts around
lines 574 - 577:
Add a ChatGPT account case to the quota test’s account matrix with
requiresOpenaiAuth set to false, and verify that checkCodexProviderStatus does
not publish the stored account’s native quota for custom-provider traffic.
Preserve the existing missing-account and API-key cases.

---

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Nitpick comments:
Review comments at @apps/server/src/provider/ProviderRegistry.test.ts:
- Around line 574-577: Add a ChatGPT account case to the quota test’s account
matrix with requiresOpenaiAuth set to false, and verify that
checkCodexProviderStatus does not publish the stored account’s native quota for
custom-provider traffic. Preserve the existing missing-account and API-key
cases.

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⚠️ Outside diff range comments (1)

🟠 Major · Use the active provider endpoint when deciding native quota eligibility. · CodexProvider.ts:79

apps/server/src/provider/CodexProvider.ts:79
🎯 Functional Correctness | 🟠 Major | 🏗️ Heavy lift

Use the active provider endpoint when deciding native quota eligibility.

A custom provider can set requiresOpenaiAuth = true while routing requests to a non-OpenAI base_url. That combination passes the current predicate and allows account/rateLimits/read to publish the authenticated ChatGPT account's quota for the custom endpoint. Determine native quota from the active provider's routing identity, not only from the account authentication mode.

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Review comment at @apps/server/src/provider/CodexProvider.ts at line 79:
Update the native quota eligibility predicate in CodexProvider to check the
active provider’s routing identity as well as requiresOpenaiAuth and account
type, so authenticated accounts routed through a non-OpenAI base_url cannot
publish ChatGPT quota.

---

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Outside diff comments:
Review comments at @apps/server/src/provider/CodexProvider.ts:
- Line 79: Update the native quota eligibility predicate in CodexProvider to
check the active provider’s routing identity as well as requiresOpenaiAuth and
account type, so authenticated accounts routed through a non-OpenAI base_url
cannot publish ChatGPT quota.

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• 🪄 Fix comments: Fix CodeRabbit comments on this PR

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Inline comments:
Review comments at @apps/server/src/provider/CodexProvider.ts:
- Line 527: Update the `Effect.orElseSucceed` fallback so a failed `config/read`
remains distinguishable from a confirmed missing route override; make
`reportsNativeUsage` report quota as unavailable when the route is unknown,
while preserving existing behavior for a confirmed absent override. Add a test
covering failed `config/read` with a custom provider that requires OpenAI
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[juliusmarminge]

Evidence

Configure a working custom Codex proxy with an environment-variable API key and no ChatGPT login, then open Usage > Limits and refresh. Both sides use fresh databases, the real Codex runtime, and the same 1280×800 light-theme browser viewport.

Before	After
a03d9bce02	33e1bb2036
Before refresh recording	After refresh recording

Parameterized settings seed driver

Verified the missing-login warning case. Stored ChatGPT quota suppression and native subscription controls remain unverified because first-party ChatGPT OAuth is unavailable on this VM.

AI-assisted; verified with the tests and tools listed above.

Not shown:

• Permanent blocker: suppression of a stored ChatGPT account's successfully read quota could not be demonstrated because first-party ChatGPT OAuth is unavailable on this VM.
• Permanent blocker: native ChatGPT subscription quota availability and preservation of genuine native quota probe failures could not be demonstrated without a first-party ChatGPT OAuth login.

[phsd0]

This broke my caveman proxy setup

[phsd0]

At least add explicit way to allow custom proxies.

Current setup is this:

• Model requests go through Caveman → OpenAI.
• Account limits are fetched by Codex → OpenAI directly, using a separate backend URL.

The problem happens before either route matters: T3 sees Caveman’s custom model URL and skips asking Codex for limits altogether.