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fix(combos): a spent pool account must not cool the whole target - #6234
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`advanceComboAfterFailure` cooled the combo target for any target-scoped failure, and `cooldownMapKey` is `comboId + provider/model` with no account in it. A provider with an account pool therefore shared one cooldown entry across every account, so a 429 from a single spent account removed the whole target from selection and the remaining accounts were never tried. On 2026-09-28, 01:17-05:18 WITA, one Anthropic account answered `Retry-After: 318747` (88.5 hours, its weekly window gone). `anthropic/claude-opus-5-5` was cooled outright and the gateway returned 503 with zero upstream sends for four hours, while a direct probe showed four of five accounts returning HTTP 200. A 429 names the ACCOUNT that is spent, not the target. Every account pool already records that account's own cooldown and routes past it (`rotateAnthropicAccountOn429`, `rotateKeyOn429`, the Codex health store), so the combo layer needs to stop duplicating that decision at target scope rather than to grow a second cooldown map beside the pool's. The account is read from the provider label the dispatch stamped (`anthropic-p2e22d0`), which a pool rewrites and a configured provider name never matches. `accountLogLabel` is deliberately not used: it is stamped for a lone configured API key too, so it cannot tell a pooled account apart from a provider with no pool to rotate within. Unknown account still cools the target, which is the half that keeps this from trading a blackhole for a hammer. It also lands exactly where it is needed: when every account is cooled, the pool refuses locally with a 429 BEFORE it picks one, so no account is named, the target cools on the pool's own Retry-After, and nothing is sent upstream. Target-level failures (provider down, model gone) and provider-scoped credential failures are untouched. Co-Authored-By: Claude Code <noreply@anthropic.com>
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drafts: true📝 WalkthroughWalkthroughCombo failure handling now records pooled-account attribution. An account-attributed 429 in target scope does not record a target cooldown. Tests cover account selection, cooldown recording, and failures that still cool the target. ChangesCombo cooldown handling
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Bug fix Merge Risk: 🔵 Low · up to The production change looks scoped correctly. One regression test can miss a cooled account being reused, so fix its token mapping before relying on it to guard this behavior. Security Architecture ReviewSecurity architecture risk: 🔵 Low · up to The change narrows a target-wide cooldown to the failed account when the account is identifiable. The reviewed paths retain target cooldowns when no account is identified, and no introduced security issue was established. Some concurrent and less common provider paths remain unverified. Retained concerns Security review detailsSecurity Blast Radius
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🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
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✨ Finishing Touches🧪 Generate unit tests (beta)
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리뷰 · 우선순위 72 / 80콤보는 타깃을 2026-09-28에 Anthropic 계정 하나가 이번 수정은 풀이 계정 하나를 집어서 낸 429면 콤보 타깃을 식히지 않습니다. 조건 세 개가 같이 맞을 때만입니다. 쿨다운 범위가 계정 이름은 로그용으로 다시 쓴 provider 라벨( 라인 - 라인 - 라인 - PR이 draft이고 체크리스트 네 칸이 비어 있습니다. 작성자는 새 테스트 8개, typecheck, structure, privacy는 초록이고 전체 메인테이너의 판단이 필요한 지점 API 키 풀과 xai/cursor/kiro를 이번에도 타깃 단위로 둘지, 나중에 라벨 재작성까지 맞춰 계정 단위로 맞출지. Codex 콤보 429에 이 가드가 같이 걸리는 게 의도인지. 이 수정과 겹치는 열린 PR은 없습니다. 너의 추천 원인과 고치는 선은 맞습니다. 풀이 이미 계정 쿨다운을 갖고 있으니 콤보가 타깃을 한 번 더 식히지 않는 쪽이 맞습니다. 머지 전에 재시도 토큰 단언을 계정 id 기준으로 고치고, 이 댓글은 grok-bot이 작성했습니다 |
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Review comments at
@tests/adapters/anthropic/anthropic-combo-account-cooldown.test.ts:
- Line 149: Update the cooledTokens construction in the test to map each cooled
account ID back to its original index in ids, then build its credential token;
do not assume cooled is index-aligned with ids.
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src/combos/resolve.tssrc/providers/label.tssrc/server/responses/core-combo.tstests/adapters/anthropic/anthropic-combo-account-cooldown.test.tstests/server/server-combo-cooldown-recording.test.ts
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CodeRabbit review on lidge-jun#6234. `cooled` is a filtered subset of `ids`, so its positions are not account indexes. Mapping it with `cooled.map((_, index) => credential(index))` built tokens for accounts 0 and 1 when accounts 0 and 2 were the cooled pair, and the assertion would then pass even if the retry left through cooled account 2 -- the exact failure the test exists to catch. Each cooled id now resolves to its own token, and the same claim is asserted from the other direction: the token actually sent is mapped back to its account and that account must be one the first request never cooled. Co-Authored-By: Claude Code <noreply@anthropic.com>
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Correct, and fixed in
I also asserted the same claim from the other direction, since the negative form alone is easy to satisfy by accident: the token actually sent is resolved back to its account, and that account must be one the first request never cooled. Still proven red before green — forcing Gates on the updated branch: |
#6234) (#6255) Carries #6234 by @vadymhimself: a 429 attributed to a pooled account that was itself cooled no longer cools the whole combo target, so healthy sibling accounts stay usable; unknown-account 429s still cool the target. Co-authored-by: Vadym O <bolein95@gmail.com>
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Landed on dev via the credited carry #6255 (Co-authored-by trailer retained in the squash commit). Thank you, @vadymhimself. |
Summary
When a pooled provider returns a 429 for one spent account, the combo layer cools the whole target —
comboId+ provider/model — removing it from selection for every account behind it.The pool has already handled that failure.
rotateAnthropicAccountOn429(src/oauth/anthropic-routing.ts) writesupstreamHealth[accountId].cooldownUntilfrom the sameRetry-After, drops the affinity and rotates;rotateKeyOn429(src/providers/key-failover.ts) and the Codex health store do the same. So the combo layer is not supplying a missing account cooldown — it is duplicating the pool's decision at target scope, and blacking out the accounts that still answer.What this costs in production
On a fork of this repo, 2026-09-28 01:17–05:18 WITA: one Anthropic account answered
Retry-After: 318747(88.5h, weekly limit exhausted).anthropic/claude-opus-5-5left selection and the gateway returned 503 with zero upstream sends for four hours, while a direct probe taken during the incident showed four of the five accounts returning HTTP 200.The change
On a 429 that a pool attributes to a single account, the combo layer records nothing; the pool's own entry is the account cooldown.
Three source files, 42 lines. All three conditions are required, so every other failure cools the target exactly as today.
The unknown-account fallback is load-bearing, not decoration. When every account is cooled,
resolveAnthropicAccountForSessionreturnsreason: "all-cooled"andrequest-transport.tsanswers 429 locally before any account is selected. No account is named,failedAccountisundefined, and the target cools on the pool's ownRetry-Afterwith nothing sent upstream. The blackhole case and the hammering case are separated by whether the pool got far enough to pick an account — which is exactly the right line.poolAccountProviderLabelderives the account from the rewritten provider label (anthropic-p2e22d0), which only a pool dispatch produces. It deliberately does not useaccountLogLabel: that is stamped for a lone configured API key too (stampApiKeyAccountLabel), so it cannot tell a pooled account from a provider with no pool to rotate within — using it would skip the cooldown for single-key providers and hammer a target nothing else is holding back.Deliberately unchanged: API-key pools and the generic OAuth failover providers (xai, cursor, kiro) do not rewrite the provider label, so they keep today's target-level cooling.
Verification
Proven red before green. Forcing
accountScopedtofalse:Restored:
2 pass / 0 fail. The second test — all accounts spent, target still cools — passes in the red state too, which is the point: the fallback is not what this changes.The end-to-end case seeds 5 accounts and a real 429 carrying
Retry-After: 318747. Request 1 burns 4 of 5 (the pool rotates three times, then returns the refusal); request 2 leaves through the untouched fifth and returns 200.Not run: the full
bun run test.🤖 Generated with Claude Code
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