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fix(kiro): send native reasoning effort for the GPT-5.6 family and replay its blob on the right field - #4682

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WalterMa:fix/kiro-native-reasoning-effort

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@WalterMa WalterMa commented Sep 15, 2026

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Summary

Kiro's native reasoning-effort field is now used for gpt-5.6-luna and gpt-5.6-terra at low, medium, high and max, and the encrypted reasoning blob the GPT-5.6 family returns is replayed on the wire field it actually arrived on.

KIRO_NATIVE_EFFORT_FIELDS in src/adapters/kiro/reasoning.ts held only gpt-5.6-sol and claude-opus-5, so a request asking for low/medium/high/max for luna or terra reached Kiro as the emulated <thinking_mode> prompt with no additionalModelRequestFields.reasoning.effort at all. Both models accept the native field on the live runtime, so their absence from the table was an omission rather than a capability difference.

Admission to the native wire is an explicit allowlist of the rungs measured on the live runtime, narrower than the shared effort ladder: low, medium, high and max for luna and terra, all five rungs for sol and opus. xhigh on luna and terra therefore keeps the emulated thinking-tag path it had before this branch, so a selector clients already use cannot become an upstream 400 when the shared ladder grows — KIRO_NATIVE_EFFORTS governs which efforts a model accepts at all, and a separate allowlist governs which of them reach the native field.

The same models return their encrypted reasoning blob on reasoningContentEvent.signature, not redactedContent. That value starts with .KTR~~ and is not base64. The adapter read redactedContent only — a member none of the thirteen captures sent, all thirteen carrying {signature, text} — so the blob was dropped and the next turn had no previous reasoning to replay; placing that value on redactedContent instead comes back HTTP 400 REQUEST_BODY_INVALID ("Improperly formed request"), which is the A/B measured below. The blob now carries the field it arrived on (a signature: tag) from the adapter event, through the ocxr1: reasoning envelope, to assistantResponseMessage.reasoningContent, and replays verbatim on that member. Provider data cannot forge the tag: the other member is base64, whose alphabet has no colon.

Replay safety for anything a client already stored: a krc value produced before this change is either base64 — it could only have come from the redactedContent member, and it still replays there unchanged — or it does not exist, because no released build read signature (git grep signature v2.54.0 -- src/adapters/kiro* finds only the unrelated anthropic thinking-signature path). The tag is additive; untagged values keep the old member.

Measured on the live runtime against one fixed hard prompt, HTTP 200 throughout:

  • luna's blob 5,130 chars at native low, 16,686 at medium, 30,670 at high, 48,594 at max; 13,118 with no effort signal at all, and gpt-5.6-sol's native max cross-checked at 30,498.
  • The emulated tag channel these models used to receive: 21,202 (low) and 28,302 (max) — between native medium and high, never reaching native max.
  • terra, two repetitions each: 11,758 / 17,598 bare against 34,590 / 38,106 at native max.
  • luna and terra also accept native xhigh, two repetitions each: HTTP 200, metadataEvent with stopReason: END_TURN, and an encrypted reasoning blob on reasoningContentEvent — luna 39,746 / 21,982 chars, terra 23,586 / 5,554, against 18,874 / 25,482 (luna) and 10,362 / 15,342 (terra) at native high. Both request bodies carried additionalModelRequestFields.reasoning.effort=xhigh with no thinking-tag block. Blob size varies per repetition, so read these as acceptance captures rather than a strength ranking. The code deliberately leaves that rung emulated (see above); the capture is recorded because it, not a passing build, is what shows the vendor accepts the field.
  • Replay A/B on one captured luna blob: {signature: …} 200, {redactedContent: …} 400 com.amazon.kiro.runtimeservice#ValidationException / REQUEST_BODY_INVALID.

Two regression tests pin the wire behavior. tests/providers/kiro/kiro-reasoning-roundtrip.test.ts round-trips a tagged blob through bridge → request parse → rebuilt Kiro body and asserts the tag never reaches the wire; it also pins the parse side that mints the tag, including a signature-only event that carries no assistant text, and asserts that luna and terra emit additionalModelRequestFields.reasoning.effort with no thinking-tag block. The native-effort boundary sits next to it: luna and terra send the native field for low, medium, high and max, keep xhigh on the emulated block (<thinking_mode>enabled</thinking_mode> with <max_thinking_length>900</max_thinking_length>), sol and opus still send native xhigh on their own fields, and an effort outside the measured set resolves to no native field — so a later edit to the shared ladder cannot silently widen the wire. tests/providers/kiro/kiro-adapter.test.ts extends its existing "native-effort models reject efforts Kiro does not accept" loop to luna and terra.

The new assertions live in the round-trip file rather than in kiro-adapter.test.ts or kiro-stream.test.ts because both of those sit at their file-size-ratchet cap and a baselined file may not grow by a single line (tests/fixtures/file-size-baseline.json). The change in kiro-adapter.test.ts rewrites an existing line, so its cap still holds.

The docs side is the adapter table and the same paragraph in the translated pages. Five of those translations had dropped the additionalModelRequestFields prefix on the claude-opus-5 field, which documents a different request shape than the English source; CodeRabbit flagged ja/ko/ru, and zh-cn and zh-tw carried the same truncation, so all five now spell the full path. The same paragraph records the rung boundary in every locale: native low/medium/high/max for luna and terra, xhigh emulated on those two, and sol and opus unchanged.

Verification

  • bun run typecheck — clean.
  • bun test tests/providers/kiro tests/ci-workflows/file-size-ratchet.test.ts — 447 pass / 0 fail across 17 files.
  • bun run structure:checkstructure/ SSOT checks passed.
  • bun run privacy:scan — passed.
  • bun run test aborts on this host at the runner's 900 s per-lane cap before the suite finishes ([test] parallel suite exceeded 900s, exit 124), so the same plan was run without the cap on the pre-rebase head: 25177 pass / 20 skip / 5 fail. Every failure is host-environmental and reproduces on unmodified upstream/dev in the same file: two remote workspace Linux command sandbox cases (this host's temp directory is group-writable, so the bubblewrap executable guard trips before the symlink check they assert), resolveCodexRuntime > treats missing persisted and resolved versions as the same selection, and connected-client runtime probe scope > a rejected preferred runtime falls back without rewriting the saved selection. The remaining main-lane failure, the synchronous restore body is gated on skipHistory, passes on rerun at low load, and the serial-lane Codex autostart shim > Unix install rejects delayed detached redispatch case fails identically on both trees.

Rebase note: the branch is rebased on the current upstream/dev tip (51d577c3f) and carries maintainer commit 46e5f55ca (keep unverified luna and terra effort rungs emulated, plus the boundary fixtures). bun run typecheck, the focused Kiro suite, bun run structure:check and bun run privacy:scan above were rerun on that head.

Checklist

  • Scope stays focused and avoids unrelated cleanup.
  • Docs or release notes were updated when needed.
  • Security-sensitive changes were reviewed for secrets, auth, and unsafe defaults.

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Summary by CodeRabbit

  • New Features

    • Added native reasoning-effort support for GPT-5.6 Luna and Terra at the verified low, medium, high, and max levels.
    • Improved reasoning replay so encrypted signature data is preserved and returned through the correct field.
    • GPT-5.6 Sol and Claude Opus retain native support across all reasoning levels.
  • Bug Fixes

    • Unverified xhigh requests for Luna and Terra continue using emulated reasoning to avoid invalid requests.
  • Documentation

    • Updated Kiro adapter guidance across supported languages to clarify native and emulated reasoning behavior.

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📒 Files selected for processing (12)
  • docs-site/src/content/docs/fr/reference/adapters.md
  • docs-site/src/content/docs/ja/reference/adapters.md
  • docs-site/src/content/docs/ko/reference/adapters.md
  • docs-site/src/content/docs/reference/adapters.md
  • docs-site/src/content/docs/ru/reference/adapters.md
  • docs-site/src/content/docs/tr/reference/adapters.md
  • docs-site/src/content/docs/zh-cn/reference/adapters.md
  • docs-site/src/content/docs/zh-tw/reference/adapters.md
  • src/adapters/kiro/payload.ts
  • src/adapters/kiro/reasoning.ts
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📝 Walkthrough

Walkthrough

Kiro now supports native reasoning effort for the full GPT-5.6 family. It preserves whether reasoning arrived as signature or redactedContent, then replays the same wire field. Tests and localized documentation cover both changes.

Changes

Kiro reasoning handling

Layer / File(s) Summary
GPT-5.6 native effort mapping
src/adapters/kiro/reasoning.ts, src/adapters/kiro/payload.ts, tests/providers/kiro/kiro-reasoning-roundtrip.test.ts, tests/providers/kiro/kiro-adapter.test.ts, src/providers/kiro-models.ts, docs-site/src/content/docs/*/reference/adapters.md
gpt-5.6-terra and gpt-5.6-luna use additionalModelRequestFields.reasoning.effort for low, medium, high, and max. Their xhigh requests retain emulated thinking instructions. Existing native handling for gpt-5.6-sol and claude-opus-5 remains unchanged.
Signature-aware reasoning round trip
src/adapters/kiro-events.ts, src/adapters/kiro/stream.ts, src/adapters/kiro/reasoning.ts, src/adapters/kiro/wire.ts, src/adapters/kiro/payload.ts, tests/providers/kiro/kiro-reasoning-roundtrip.test.ts, src/responses/reasoning-envelope.ts, src/types/request.ts, structure/providers/kiro.md
Reasoning events parse signature before redactedContent. The stream tags the originating field, and replay converts tagged blobs into mutually exclusive signature or redactedContent objects. Types, tests, and documentation describe this wire-field-preserving behavior.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~25 minutes

Change: Bug fix

Sequence Diagram(s)

sequenceDiagram
  participant KiroStream
  participant parseKiroEvent
  participant ReasoningBlob
  participant buildKiroPayload
  KiroStream->>parseKiroEvent: Receive signature or redactedContent
  parseKiroEvent->>ReasoningBlob: Preserve the originating field
  ReasoningBlob->>buildKiroPayload: Decode the tagged blob
  buildKiroPayload->>KiroStream: Replay the matching reasoningContent field
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Merge Risk: ⚪ Minimal · up to 46e5f

The Kiro changes preserve compatible fallback behavior and correctly replay encrypted reasoning content, with no actionable current-head risk identified.

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Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed The title clearly summarizes both primary changes: native reasoning-effort support for the GPT-5.6 family and correct replay of Kiro reasoning blobs.
Full details: Docstring Coverage

Explanation

Docstring coverage is 30.77% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 13 functions across 10 files. (9 skipped: 9 unsupported.)

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@github-actions github-actions Bot added the bug Something isn't working label Sep 15, 2026
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  • all PR quality gates passed; the review readiness checklist is complete.

Review readiness checklist

  • ✅ All CI tests are green on my local testing.
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Maintainers notified: @lidge-jun @Ingwannu

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리뷰 · 우선순위 70 / 80

이 PR은 지금 dev HEAD(a63a47363, #4675 server/index.ts 파사드까지 착지) 위에서 Kiro GPT-5.6 계열의 두 구멍을 같이 막는다. 첫째, 현재 devKIRO_NATIVE_EFFORT_FIELDS 에는 gpt-5.6-solclaude-opus-5 만 있다. gpt-5.6-luna/gpt-5.6-terralow/medium/high/max 를 내면 네이티브 additionalModelRequestFields.reasoning.effort 가 안 나가고, 예전처럼 에뮬 <thinking_mode> 프롬프트만 붙는다. 둘째, GPT-5.6이 돌려주는 암호화 블롭은 와이어의 reasoningContentEvent.signature 에 오고 값은 .KTR~~… 형태다. 예전 프록시는 그걸 redactedContent(base64 멤버)로 다시 보내서 REQUEST_BODY_INVALID 가 났다. 라이브 측정(luna effort별 블롭 길이, terra max 반복)이 PR 주석에 있어서 “스키마 추측”이 아니라 “런타임 확인”이라는 점이 강하다. 지금은 draft다.

고치는 축은 두 갈래다. src/adapters/kiro/reasoning.ts 표에 luna/terra를 reasoning 필드로 넣고, 같은 파일에 tagKiroReasoningBlob/splitKiroReasoningBlob/kiroReasoningContent 를 둔다. 블롭은 계속 한 문자열(kiro_redacted_reasoningocxr1 envelope krcOcxAssistantMessage.kiroRedactedReasoning)로 다니고, 도착 필드만 signature: 접두로 태그에 실어 보낸다. base64 알파벳에 콜론이 없으니 제공자 데이터가 태그를 위조하기 어렵다는 설명도 맞다. 태그 없는 값은 예전처럼 redactedContent 로 재생되어 하위 호환이 남는다. kiro-events.tssignature 를 파싱하고, 둘 다 오면 signature를 우선한다. stream.ts 가 태그하고 payload.tskiroReasoningContent(...) 로 히스토리에 다시 붙인다.

테스트가 실패 모드를 직접 고정한다. tests/providers/kiro/kiro-reasoning-roundtrip.test.ts 에 “signature 블롭은 signature로 재생”, “태그 없는 값은 redactedContent”, “태그가 와이어 JSON에 안 남음”, “스트림이 signature 이벤트를 signature:… 로 기록”, “luna/terra는 thinking 태그 대신 native reasoning.effort” 가 들어간다. kiro-adapter.test.ts 도 luna/terra/sol/opus-5에 대해 unsupported effort(minimal) 거부와 native 필드 모양을 본다. 문서(영·한·일·중·러·트·프 등 adapters.md)와 structure/providers/kiro.md 도 표와 같이 고쳤다. types.ts/config.ts 대분할과는 겹치지 않고, godfile round5·#4546 줄과도 파일 충돌이 거의 없다. close-don't-rebase 대상이 아니다.

남는 판단 포인트는 운영 쪽이다. PR이 아직 draft라서 CI 본검사(테스트 샤드·gates)가 전부 보이기 전에 ready로 올리면 안 된다. 태그 설계는 우아하지만, 예전에 redactedContent 로만 저장해 둔 kiroRedactedReasoning 이 실제로는 GPT-5.6 .KTR~~ 값이었다면, 태그 없이 다시 redactedContent 로 나가 같은 400이 날 수 있다. 세션을 한 번 끊거나, 필요하면 마이그레이션/재수집이 있는지가 질문이다. 또 signatureredactedContent 가 한 이벤트에 같이 오면 signature만 남기는데, 라이브 캡처에 그 경우가 있는지만 확인하면 된다. effort 표 확장은 측정 근거가 충분해 보이고, sol만 넣어 둔 예전 범위가 재현되지 않았다는 주석도 설득력 있다.

우선순위 70인 이유다. luna/terra 사용자에게는 effort가 먹히지 않거나 멀티턴이 400으로 깨지는 실사용 버그다. 다만 #4681(실제 홈 삭제)처럼 데이터 손실급은 아니고, draft 상태라 머지 큐에서는 그 다음이다. 범위는 어댑터·타입·문서·테스트로 잘 묶여 있다. ready + CI 초록이면 독립 머지해도 된다.

src/adapters/kiro/reasoning.ts (KIRO_NATIVE_EFFORT_FIELDS) - luna/terra 추가. 현재 dev 누락이 사고의 요청 쪽 원인. 측정 주석이 설득력 있음.
라인 86-108 - src/adapters/kiro/reasoning.ts - signature: 태그로 필드 보존. base64에 콜론 없음 전제. 태그 없는 값은 redactedContent 하위호환.
라인 140-159 - src/adapters/kiro-events.ts - wire signature 파싱, 동시 존재 시 signature 우선. 모델 id가 아니라 필드로 키잉. 맞음.
라인 640-643 - src/adapters/kiro/stream.ts - 도착 필드를 태그에 싣는 유일한 지점. 주석과 구현이 일치.
src/adapters/kiro/payload.ts (~396-399, effort 분기) - 재생 시 kiroReasoningContent, 요청 시 luna/terra도 native effort. 요청·응답 양끝이 맞물림.
tests/providers/kiro/kiro-reasoning-roundtrip.test.ts - REQUEST_BODY_INVALID 실패 모드를 단언으로 고정. 머지 전 꼭 초록 확인할 테스트.
draft 상태 - CodeRabbit도 draft로 skip. ready 전환 전에 샤드·gates를 볼 것.

메인테이너의 판단이 필요한 지점

  • draft를 언제 ready로 올릴지(본인 CI 초록 기준)
  • 예전에 태그 없이 저장된 GPT-5.6 .KTR~~ 블롭이 세션에 남아 있으면 400이 재발하는지, 문서/마이그레이션이 필요한지
  • signature+redactedContent 동시 이벤트가 실측에서 존재하는지(지금은 signature 우선)
  • fix(tests): stop a quota test from deleting the real OpenCodex home #4681 홈 가드 긴급 수정과 머지 순서를 어떻게 둘지(충돌은 거의 없음)

너의 추천
close-don't-rebase 대상이 아니다. luna/terra native effort + signature 재생은 측정과 테스트가 받쳐 주는 실버그 수정이다. draft를 ready로 바꾸고 CI(특히 kiro-adapter·reasoning-roundtrip·gates)가 초록이면 머지. 저장된 구형 블롭 호환만 한 줄 확인하거나, “세션 재시작 권장”을 본문에 남기면 충분하다. 공개 import 경로와 godfile 파사드는 건드리지 말 것.

이 댓글은 grok-bot이 작성했습니다

@WalterMa
WalterMa force-pushed the fix/kiro-native-reasoning-effort branch from 5c04e11 to a0c477d Compare September 15, 2026 05:37
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Answering the two open questions from the review, with the captures behind them.

Can a stored krc be a raw .KTR~~ value, and does it need migrating? None can exist from this proxy's output. Every released build — v2.54.0 included — parses reasoningContentEvent.redactedContent only (git grep signature v2.54.0 -- src/adapters/kiro* matches only the unrelated anthropic thinking-signature path), and redactedContent never arrived on this wire. Decoding the raw eventstream bodies of the thirteen captures I hold — luna at native low/medium/high/max, the emulated low/max, a bare prompt, terra, gpt-5.6-sol at native max, and the replay probes — each capture carries exactly one reasoningContentEvent and every one is {signature, text}; redactedContent is absent in all thirteen. So the pre-fix adapter dropped the blob for these models rather than sending it on the wrong member, and a session cannot be holding a non-base64 value under krc. The one stored shape that does exist came from the redactedContent member and stays base64 there — it base64-decodes to the same .KTR~~… — so it replays on that member exactly as before. The tag is additive and untagged values keep the old path. Nothing to migrate, and no session has to be broken off. I corrected the same sentence in the description: it previously read "what the proxy did", which overstated it — the proxy's replay path mapped a stored blob to redactedContent, but it never had a .KTR~~ value to put there.

Do signature and redactedContent arrive in one event? Not in any capture: thirteen of thirteen are signature plus text (the "..." placeholder). Preferring signature is a defensive tie-break for a shape the wire has not produced. The reverse mix-up is not possible either, since the other member is base64 and its alphabet has no colon, so provider data cannot make a stored blob look like the signature: tag.

The captures were decoded with the repository's own decodeMessage (src/lib/eventstream-decoder.ts) over the raw accept: application/vnd.amazon.eventstream response bodies.

@WalterMa
WalterMa marked this pull request as ready for review September 15, 2026 07:07
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github-actions Bot marked this pull request as draft September 15, 2026 07:07

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Actionable comments posted: 1

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Inline comments:
In `@docs-site/src/content/docs/ja/reference/adapters.md`:
- Line 159: Restore the complete effort-field path in the translated adapter
documentation: update docs-site/src/content/docs/ja/reference/adapters.md lines
159-159, docs-site/src/content/docs/ko/reference/adapters.md lines 172-172, and
docs-site/src/content/docs/ru/reference/adapters.md lines 194-194 to use
additionalModelRequestFields.output_config.effort instead of
output_config.effort, preserving the surrounding claude-opus-5 documentation.

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Reviewing files that changed from the base of the PR and between 485a525 and a0c477d.

📒 Files selected for processing (19)
  • docs-site/src/content/docs/fr/reference/adapters.md
  • docs-site/src/content/docs/ja/reference/adapters.md
  • docs-site/src/content/docs/ko/reference/adapters.md
  • docs-site/src/content/docs/reference/adapters.md
  • docs-site/src/content/docs/ru/reference/adapters.md
  • docs-site/src/content/docs/tr/reference/adapters.md
  • docs-site/src/content/docs/zh-cn/reference/adapters.md
  • docs-site/src/content/docs/zh-tw/reference/adapters.md
  • src/adapters/kiro-events.ts
  • src/adapters/kiro/payload.ts
  • src/adapters/kiro/reasoning.ts
  • src/adapters/kiro/stream.ts
  • src/adapters/kiro/wire.ts
  • src/providers/kiro-models.ts
  • src/responses/reasoning-envelope.ts
  • src/types/request.ts
  • structure/providers/kiro.md
  • tests/providers/kiro/kiro-adapter.test.ts
  • tests/providers/kiro/kiro-reasoning-roundtrip.test.ts

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Comment thread docs-site/src/content/docs/ja/reference/adapters.md Outdated
@WalterMa
WalterMa force-pushed the fix/kiro-native-reasoning-effort branch from a0c477d to 035f35d Compare September 15, 2026 07:18
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github-actions Bot marked this pull request as ready for review September 15, 2026 07:25
@github-actions
github-actions Bot marked this pull request as draft September 15, 2026 07:29
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github-actions Bot marked this pull request as ready for review September 15, 2026 07:45
@Ingwannu

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The field-preserving blob round trip and the luna/terra native-effort direction both look valuable. I approved execution of the exact-head hosted workflows; that is CI authorization, not merge approval.

One live-contract point remains before I can approve the current head. Adding luna and terra to KIRO_NATIVE_EFFORT_FIELDS changes their xhigh behavior too: KIRO_NATIVE_EFFORTS includes xhigh, so the adapter now sends additionalModelRequestFields.reasoning.effort = "xhigh" instead of the previous emulated thinking block. The evidence lists native low/medium/high/max for luna and native max for terra, but not native xhigh for either model.

Please confirm whether Kiro accepted native xhigh for both luna and terra on the live runtime. If it did, add that result to the evidence and a wire assertion. If it did not or was not tested, keep xhigh on a documented compatible mapping or out of the native ladder rather than silently turning a previously accepted selector into an upstream 400. I will finish the exact-head review once that point and hosted CI are settled.

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Requesting changes on exact head 9457ee3cef6326d97f04b638eef8f1ebed937b1c. The blob-field preservation is well covered and the hosted suite is green, but the native-effort change still widens luna and terra to an unverified wire contract. The submitted evidence exercises low/medium/high/max; it does not show that Kiro accepts native xhigh for either model. Today the patch stops the existing emulation path from handling that rung and sends additionalModelRequestFields.reasoning.effort=xhigh instead.\n\nPlease provide a redacted live luna/terra xhigh capture showing that exact native field is accepted, or keep xhigh on the prior emulation path while enabling only the proven native rungs. Add the corresponding boundary regression so future ladder changes cannot silently widen the native wire. This is the only remaining blocker; CI execution success is not upstream-contract evidence.

wentao-ma2 and others added 3 commits September 15, 2026 19:28
…play its blob on the right field

`gpt-5.6-luna` and `gpt-5.6-terra` were missing from `KIRO_NATIVE_EFFORT_FIELDS`, so a request
asking for `low`/`medium`/`high`/`max` reached Kiro with the emulated `<thinking_mode>` prompt and
no `additionalModelRequestFields.reasoning.effort` at all. Both models accept the native field on
the live runtime.

The encrypted reasoning blob those models return also arrives on
`reasoningContentEvent.signature`, not `redactedContent`, and its `.KTR~~…` value is not base64.
The adapter read `redactedContent` only — a member none of the thirteen captures sent (all thirteen
carried `{signature, text}`) — so the blob was dropped and the next turn had no previous reasoning
to replay; sending that value on `redactedContent` instead comes back HTTP 400
`REQUEST_BODY_INVALID` ("Improperly formed request"). The blob now carries the field it arrived on
(a `signature:` tag) from the adapter event through the `ocxr1:` envelope to
`assistantResponseMessage.reasoningContent`, and is replayed verbatim on that member. Provider data
cannot forge the tag: the other member is base64, whose alphabet has no colon.

Measured on the live runtime against one fixed hard prompt, HTTP 200 throughout:
- luna's reasoning blob 5,130 chars at native `low`, 16,686 at `medium`, 30,670 at `high` and
  48,594 at `max`; a bare prompt with no effort signal returned 13,118, and `gpt-5.6-sol`'s native
  `max` cross-checked at 30,498.
- The emulated tag channel that used to serve these models: 21,202 (`low`) and 28,302 (`max`) —
  between native `medium` and `high`, never reaching native `max`.
- terra, two repetitions each: 11,758 / 17,598 bare against 34,590 / 38,106 at native `max`.
- Replay A/B on one captured luna blob: `{signature: …}` 200, `{redactedContent: …}` 400
  `com.amazon.kiro.runtimeservice#ValidationException / REQUEST_BODY_INVALID`.

The new assertions live in `tests/providers/kiro/kiro-reasoning-roundtrip.test.ts`, next to the
round-trip they belong to, because `kiro-adapter.test.ts` and `kiro-stream.test.ts` both sit at
their file-size-ratchet cap and a baselined file may not grow by a single line
(`tests/fixtures/file-size-baseline.json`). `kiro-adapter.test.ts` still extends its existing
unsupported-effort loop to luna and terra, which rewrites one line and leaves the cap intact.

Verification:
- `bun run typecheck`
- `bun test tests/providers/kiro` — 439 pass / 0 fail
- `bun test tests/ci-workflows/file-size-ratchet.test.ts` — 6 pass / 0 fail
- `bun run structure:check`, `bun run privacy:scan`
…ages

CodeRabbit flagged the ja/ko/ru adapter pages for dropping the
`additionalModelRequestFields` prefix on the claude-opus-5 effort field, which
documents a different request shape than the English source. zh-cn and zh-tw
carried the same truncation, so all five locales now name
`additionalModelRequestFields.output_config.effort` exactly as the canonical
page does. tr and fr were already complete.
Use the proven native effort allowlist for newly enabled models, retain existing Sol/Opus behavior, and add boundary fixtures. No live provider requests or product tests were run on the connected machine.

Co-authored-by: wentao.ma2 <wentao.ma2@envision-digital.com>
@lidge-jun
lidge-jun force-pushed the fix/kiro-native-reasoning-effort branch from 9457ee3 to 46e5f55 Compare September 15, 2026 10:51
@github-actions
github-actions Bot marked this pull request as draft September 15, 2026 10:52
@WalterMa

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@Ingwannu answering the xhigh question with a fresh capture, then what the branch does with it.

Does Kiro accept native xhigh for luna and terra? Yes. Four dedicated live requests (two repetitions per model) on the same fixed hard prompt as the rest of the evidence — the primality search on 2^61-1 plus an exact 20-bit recurrence count, 4,096 max output tokens — built with the adapter's own payload builder and sent with additionalModelRequestFields.reasoning.effort=xhigh:

model stopReason, rep 1 / rep 2 blob chars, rep 1 / rep 2 at native high, same prompt
gpt-5.6-luna END_TURN / END_TURN 39,746 / 21,982 18,874 / 25,482
gpt-5.6-terra END_TURN / END_TURN 23,586 / 5,554 10,362 / 15,342

All four returned HTTP 200 with metadataEvent and reasoningContentEvent. The request bodies were checked before sending: they carried the native field and no <thinking_mode> block. That is acceptance evidence and not a strength ordering — the blob varies per repetition, and terra's xhigh pair (23,586 / 5,554) straddles its own high range — so I am not claiming the rung is stronger than what it replaces.

What the branch does with the answer. 46e5f55ca narrowed native admission to the rungs that had evidence at the time and added the boundary fixtures, so xhigh on luna and terra keeps the pre-existing emulated tag path: your second option, with the mapping documented in docs-site/src/content/docs/reference/adapters.md and the eight translated pages plus structure/providers/kiro.md. The boundary is pinned by tests, not prose: the native field for low/medium/high/max, the emulated <thinking_mode> block for xhigh, unchanged native xhigh for sol and opus, and an effort outside the measured set resolving to no native field — so growing the shared ladder cannot silently widen the wire. A selector clients already use can no longer become an upstream 400.

If you would rather take the native rung now that the capture exists, say so and we will add xhigh to the luna/terra allowlist with a matching wire assertion — one entry in KIRO_LUNA_TERRA_NATIVE_EFFORTS and one test — instead of leaving the conservative mapping in place.

Housekeeping: the four readiness boxes are ticked against head 46e5f55ca, which sits on the current dev tip (51d577c3f). Hosted CI on that head (Cross-platform CI, React Doctor) is action_required and needs a maintainer approval again because the head moved.

@github-actions
github-actions Bot marked this pull request as ready for review September 15, 2026 11:16
lidge-jun added a commit that referenced this pull request Sep 16, 2026
…ias range

Two review findings on this lane were accurate. They are fixed on top of the
lane rather than by rewriting a member's commit, so every member's ancestry and
authorship stay intact.

structure/providers/kiro.md said reasoningContentEvent carries the encrypted
blob and "never text". The round-trip test #4682 added shows otherwise: every
captured GPT-5.6 frame leaves a literal "..." placeholder on text and the
adapter forwards it as a reasoning_raw_delta
(tests/providers/kiro/kiro-reasoning-roundtrip.test.ts, "a signature blob is
tagged with the field it must be replayed on"). The field is present; what it
never carries is model reasoning. The wording now says that, which keeps the
doc from contradicting its own binding test.

#4224 widened the managed Desktop date aliases from 2026 alone (365 slots) to
2026-2035 (3652), but every user-facing description of that namespace still
said claude-opus-4-8-2026MMDD: the ocx claude help text, the Claude Code guide
in four locales, and structure/clients/claude-desktop.md did not mention the
range at all. A user reading any of them would conclude a 2027 alias is not one
of ours. All four surfaces now give the real range and record that 2026 is
allocated first, so existing assignments keep their ids.

No runtime behaviour changes here. The only src/ edit is the help string in
src/cli/registry.ts.
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4 participants