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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Included review availability: Your plan provides up to 10 included reviews per hour; 2 remain after this review. 📝 WalkthroughWalkthroughKiro now supports native reasoning effort for the full GPT-5.6 family. It preserves whether reasoning arrived as ChangesKiro reasoning handling
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
Merge Risk: ⚪ Minimal · up to The Kiro changes preserve compatible fallback behavior and correctly replay encrypted reasoning content, with no actionable current-head risk identified. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation 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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리뷰 · 우선순위 70 / 80이 PR은 지금 고치는 축은 두 갈래다. 테스트가 실패 모드를 직접 고정한다. 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 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.
메인테이너의 판단이 필요한 지점
너의 추천 이 댓글은 grok-bot이 작성했습니다 |
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Answering the two open questions from the review, with the captures behind them. Can a stored Do The captures were decoded with the repository's own |
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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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docs-site/src/content/docs/fr/reference/adapters.mddocs-site/src/content/docs/ja/reference/adapters.mddocs-site/src/content/docs/ko/reference/adapters.mddocs-site/src/content/docs/reference/adapters.mddocs-site/src/content/docs/ru/reference/adapters.mddocs-site/src/content/docs/tr/reference/adapters.mddocs-site/src/content/docs/zh-cn/reference/adapters.mddocs-site/src/content/docs/zh-tw/reference/adapters.mdsrc/adapters/kiro-events.tssrc/adapters/kiro/payload.tssrc/adapters/kiro/reasoning.tssrc/adapters/kiro/stream.tssrc/adapters/kiro/wire.tssrc/providers/kiro-models.tssrc/responses/reasoning-envelope.tssrc/types/request.tsstructure/providers/kiro.mdtests/providers/kiro/kiro-adapter.test.tstests/providers/kiro/kiro-reasoning-roundtrip.test.ts
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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 Please confirm whether Kiro accepted native |
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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.
…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>
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@Ingwannu answering the Does Kiro accept native
All four returned HTTP 200 with What the branch does with the answer. If you would rather take the native rung now that the capture exists, say so and we will add Housekeeping: the four readiness boxes are ticked against head |
…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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Summary
Kiro's native reasoning-effort field is now used for
gpt-5.6-lunaandgpt-5.6-terraatlow,medium,highandmax, and the encrypted reasoning blob the GPT-5.6 family returns is replayed on the wire field it actually arrived on.KIRO_NATIVE_EFFORT_FIELDSinsrc/adapters/kiro/reasoning.tsheld onlygpt-5.6-solandclaude-opus-5, so a request asking forlow/medium/high/maxfor luna or terra reached Kiro as the emulated<thinking_mode>prompt with noadditionalModelRequestFields.reasoning.effortat 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,highandmaxfor luna and terra, all five rungs for sol and opus.xhighon 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_EFFORTSgoverns 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, notredactedContent. That value starts with.KTR~~and is not base64. The adapter readredactedContentonly — 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 onredactedContentinstead comes back HTTP 400REQUEST_BODY_INVALID("Improperly formed request"), which is the A/B measured below. The blob now carries the field it arrived on (asignature:tag) from the adapter event, through theocxr1:reasoning envelope, toassistantResponseMessage.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
krcvalue produced before this change is either base64 — it could only have come from theredactedContentmember, and it still replays there unchanged — or it does not exist, because no released build readsignature(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:
low, 16,686 atmedium, 30,670 athigh, 48,594 atmax; 13,118 with no effort signal at all, andgpt-5.6-sol's nativemaxcross-checked at 30,498.low) and 28,302 (max) — between nativemediumandhigh, never reaching nativemax.max.xhigh, two repetitions each: HTTP 200,metadataEventwithstopReason: END_TURN, and an encrypted reasoning blob onreasoningContentEvent— luna 39,746 / 21,982 chars, terra 23,586 / 5,554, against 18,874 / 25,482 (luna) and 10,362 / 15,342 (terra) at nativehigh. Both request bodies carriedadditionalModelRequestFields.reasoning.effort=xhighwith 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.{signature: …}200,{redactedContent: …}400com.amazon.kiro.runtimeservice#ValidationException / REQUEST_BODY_INVALID.Two regression tests pin the wire behavior.
tests/providers/kiro/kiro-reasoning-roundtrip.test.tsround-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 emitadditionalModelRequestFields.reasoning.effortwith no thinking-tag block. The native-effort boundary sits next to it: luna and terra send the native field forlow,medium,highandmax, keepxhighon the emulated block (<thinking_mode>enabled</thinking_mode>with<max_thinking_length>900</max_thinking_length>), sol and opus still send nativexhighon 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.tsextends 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.tsorkiro-stream.test.tsbecause 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 inkiro-adapter.test.tsrewrites 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
additionalModelRequestFieldsprefix on theclaude-opus-5field, 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: nativelow/medium/high/maxfor luna and terra,xhighemulated 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:check—structure/ SSOT checks passed.bun run privacy:scan— passed.bun run testaborts 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 unmodifiedupstream/devin the same file: tworemote workspace Linux command sandboxcases (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, andconnected-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-laneCodex autostart shim > Unix install rejects delayed detached redispatchcase fails identically on both trees.Rebase note: the branch is rebased on the current
upstream/devtip (51d577c3f) and carries maintainer commit46e5f55ca(keep unverified luna and terra effort rungs emulated, plus the boundary fixtures).bun run typecheck, the focused Kiro suite,bun run structure:checkandbun run privacy:scanabove were rerun on that head.Checklist
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Summary by CodeRabbit
New Features
low,medium,high, andmaxlevels.Bug Fixes
xhighrequests for Luna and Terra continue using emulated reasoning to avoid invalid requests.Documentation