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feat: auto-select embedding-capable agents - #789

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feat/auto-embedding-model-selection
Aug 24, 2026
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feat: auto-select embedding-capable agents#789
seonghobae merged 16 commits into
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feat/auto-embedding-model-selection

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@seonghobae

@seonghobae seonghobae commented Aug 20, 2026

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Summary

Allow sync and batch embedding requests to omit model, then resolve an enabled embedding-capable agent through the existing orchestrator ranking policy while preserving explicit-model validation and fail-closed embedding_unavailable behavior.

Discovery preserves only explicitly declared source capabilities into runtime agent tags. It does not infer embedding support from provider order or model names. Pending and completed batch documents retain the resolved top-level model identity.

Consumer contract

  • POST /v1/embeddings: omit model; successful response returns the resolved deployment in top-level model.
  • POST /v1/batch/embeddings: omit model; creation and GET /v1/batch/embeddings/{id} polling documents retain the resolved top-level model.
  • Explicit model values must name an enabled embedding-capable pool agent.
  • No eligible capability returns 503 embedding_unavailable.

Current-head verification

  • HEAD: 24e1603
  • Focused discovery/embedding/API suite: 35 passed
  • git diff --check: passed
  • All current review threads resolved.
  • Prior full-suite and hosted results belonged to predecessor heads and do not transfer; run protected Checks on this head.

This PR does not change chat/completions model validation or provider credentials. Do not merge without independent approval, resolved threads, and terminal required Checks.

Summary by CodeRabbit

  • 새 기능

    • 임베딩 요청에서 모델을 생략하면 사용 가능한 임베딩 모델을 자동 선택합니다.
    • 단일·배치 임베딩에서 사용 가능한 모델이 없을 경우 503 embedding_unavailable을 반환합니다.
    • 채팅 기능이 확인된 모델을 서버 시작 시 자동 검색하고 활성화할 수 있습니다.
    • 모델 capability를 기반으로 적합한 에이전트를 선택합니다.
    • 배치 임베딩 진행 중에도 모델 정보가 응답과 비용 집계에 유지됩니다.
  • 문서

    • 임베딩 모델 자동 선택 정책과 API 계약을 문서화했습니다.
  • 테스트

    • 자동 검색, capability 기반 선택, 오류 응답 및 배치 모델 전달 검증을 추가했습니다.

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coderabbitai Bot commented Aug 20, 2026

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Review Change Stack

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Review configuration:

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 6c82d734-46c2-4891-8e06-2bab258ab03b

📥 Commits

Reviewing files that changed from the base of the PR and between 5a38468 and 9f9e18b.

📒 Files selected for processing (18)
  • contextual_orchestrator/__main__.py
  • contextual_orchestrator/cost_router.py
  • contextual_orchestrator/model_discovery.py
  • contextual_orchestrator/orchestrator.py
  • contextual_orchestrator/server.py
  • docs/planning/adrs/0024-auto-embedding-model-selection.md
  • tests/test_api_contract.py
  • tests/test_auto_discovery_server.py
  • tests/test_batch_embeddings.py
  • tests/test_embeddings_encoding_format_http_honesty.py
  • tests/test_embeddings_model_pool_http_honesty.py
  • tests/test_encoding_stream_logprobs_http_honesty.py
  • tests/test_functions_null_max_tool_calls_null_http_honesty.py
  • tests/test_ledger_execution_identity_http_honesty.py
  • tests/test_mode_casefold_http_honesty.py
  • tests/test_model_discovery.py
  • tests/test_openai_user_field_http_honesty.py
  • tests/test_token_id_whole_float_coerce_http_honesty.py
📝 Walkthrough

Walkthrough

임베딩 API에서 모델 생략과 capability 기반 자동 선택을 지원한다. 모델 discovery는 capability를 보존한다. CLI는 chat 모델을 자동 검색한다. 배치 응답과 비용 집계는 해석된 모델을 유지한다.

Changes

임베딩 모델 선택과 자동 검색

Layer / File(s) Summary
Capability discovery와 런타임 에이전트 동기화
contextual_orchestrator/__main__.py, contextual_orchestrator/model_discovery.py, tests/test_auto_discovery_server.py, tests/test_model_discovery.py
Provider 모델의 capability를 보존한다. CLI 자동 검색은 명시된 chat capability 모델만 활성 에이전트로 동기화한다.
Capability 기반 에이전트 선택과 HTTP 검증
contextual_orchestrator/orchestrator.py, contextual_orchestrator/server.py, contextual_orchestrator/api_contract.py, tests/test_embeddings_model_pool_http_honesty.py, tests/test_api_contract.py
embedding capability 에이전트를 순위화해 선택한다. 단건·배치 임베딩에서 model 생략을 허용하고, 사용 가능한 에이전트가 없으면 503 embedding_unavailable을 반환한다.
배치 모델 식별자와 비용 집계 전파
contextual_orchestrator/cost_router.py, tests/test_batch_embeddings.py, docs/planning/adrs/0024-auto-embedding-model-selection.md
배치 생성 및 보류 상태 응답에 해석된 모델을 포함한다. 비용 집계는 요청 모델을 사용한다. ADR은 선택 정책과 계약을 기록한다.
관련 HTTP 테스트와 테스트 구성 갱신
tests/test_embeddings_encoding_format_http_honesty.py, tests/test_encoding_stream_logprobs_http_honesty.py, tests/test_functions_null_max_tool_calls_null_http_honesty.py, tests/test_ledger_execution_identity_http_honesty.py, tests/test_mode_casefold_http_honesty.py, tests/test_openai_user_field_http_honesty.py, tests/test_responses_tools_shape_http_honesty.py, tests/test_security_hardening.py, tests/test_token_id_whole_float_coerce_http_honesty.py
HTTP 테스트 에이전트에 embedding 태그를 추가한다. import와 lint 주석을 정리한다. Responses 테스트의 함수명과 실행 호출명은 현재 요약상 불일치한다.

Estimated code review effort: 4 (Complex) | ~45 minutes

Merge Risk: 🟡 Moderate · up to 5a384

Auto-selection changes embedding routing, but the current implementation can overwrite operator-managed discovered-agent settings on restart and return the wrong model identity for empty batches; explicit null or blank model values also bypass the intended auto-selection behavior. These are bounded but concrete default-behavior and API-correctness risks, so the PR is not merge-ready until they are fixed or explicitly accepted.

Sequence Diagram(s)

sequenceDiagram
  participant Client
  participant EmbeddingEndpoint
  participant TaskOrchestrator
  participant ModelAgent
  Client->>EmbeddingEndpoint: 임베딩 요청 전송
  EmbeddingEndpoint->>TaskOrchestrator: embedding capability 에이전트 선택
  TaskOrchestrator->>ModelAgent: 활성 상태와 capability 검증
  ModelAgent-->>EmbeddingEndpoint: 해석된 모델 반환
  EmbeddingEndpoint-->>Client: 임베딩 응답 또는 503 embedding_unavailable
Loading
🚥 Pre-merge checks | ✅ 5
✅ Passed checks (5 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed 제목은 임베딩 capability 에이전트 자동 선택이라는 PR의 주요 변경 사항을 정확하고 간결하게 설명합니다.
Docstring Coverage ✅ Passed Docstring check was indeterminate for this PR — some files could not be analyzed in time. Not blocking.
Linked Issues check ✅ Passed Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check ✅ Passed Check skipped because no linked issues were found for this pull request.
✨ 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 feat/auto-embedding-model-selection

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@seonghobae

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Current-head proof for 70ec67910a5e0f778285a04d6e8d6de04cec6162:

  • Root cause fixed: explicit embedding model requests now require the embedding capability, so pre-existing HTTP fixtures were updated to declare the capability instead of weakening the production gate.
  • Focused embedding/API contract suite: 47 passed.
  • Full exact-tree suite after the remote branch commits and fixture correction: 1441 passed in 608.83s.
  • Ruff, compileall, and git diff --check: passed.

The hosted required checks are the remaining current-head evidence. Auto-merge will remain protected by the repository ruleset; no self-approval, admin merge, or force-push was used.

@seonghobae
seonghobae enabled auto-merge (squash) August 20, 2026 14:04
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Current-head refresh for 3a80d91b8c879e57d30ab87af664546b8712fb15:

  • The remote follow-up commit only normalizes the six embedding HTTP fixture imports and test annotations; no production behavior changed after the full-tree proof at parent 70ec679.
  • Re-run on this exact head: focused embedding/API contract suite 47 passed; Ruff, compileall, and diff checks passed.
  • Parent exact tree proof remains 1441 passed in 608.83s; the follow-up is test-only style normalization.

Hosted required checks remain the release evidence. Protected auto-merge is enabled; no self-approval, admin merge, or force-push was used.

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Review pass on exact current HEAD 3a80d91b8c879e57d30ab87af664546b8712fb15:

  • Verified the embedding capability pool, omitted-model auto-selection, explicit model capability validation, and OpenAPI contract are consistent on this stacked history.
  • Embedding, batch, discovery, and API-contract suites: 68 passed.
  • Ruff and git diff --check: passed.
  • Current hosted checks are pending; PR remains REVIEW_REQUIRED with no formal approval.

@opencode-agent please review this exact HEAD.

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@opencode-agent review exact current HEAD 3a80d91. Review the omitted-model embedding capability contract and publish a formal review.

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Please review current exact HEAD 3a80d91b8c879e57d30ab87af664546b8712fb15 against main. The change must preserve capability-constrained automatic embedding selection, explicit-model validation, batch parity, and a multi-agent orchestration boundary; publish findings or explicit no-findings.

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@devin review exact current HEAD 3a80d91b8c879e57d30ab87af664546b8712fb15 against main; focus on capability-constrained embedding auto-selection, explicit-model validation, batch parity, and provider/cost attribution.

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Exact-head local verification for 3a80d91b8c879e57d30ab87af664546b8712fb15:

  • Embedding, batch-embedding, discovery, and API contract focused suite: 88 passed in 34.87s.
  • Ruff and git diff --check: passed.
  • The capability-constrained omitted-model path, explicit-model validation, no-capability 503, and batch parity are covered at this exact head.

Hosted required Checks and an independent protected approval remain the merge gates; no bypass or self-approval used.

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@devin review exact current HEAD `3a80d91b8c879e57d30ab87af664546b8712fb15` against `main`; focus on capability-constrained embedding auto-selection, explicit-model validation, batch parity, and provider/cost attribution.

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@devin review exact current HEAD 02e13a8fdd53446a77af4ea8a25559f7f34a10af. The automatic embedding selection ADR now uses unique number 0024 (the previous 0012 collided with the accepted gateway-only ADR). The changed-contract suite passes (60 passed) and changed-file Ruff/diff checks pass; revalidate current implementation and documentation only.

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Correction: the exact current HEAD is 02e13a8 (the earlier short SHA expansion in the request was not authoritative). Review only this full SHA. The automatic embedding selection ADR is uniquely numbered 0024; changed-contract tests passed (60 passed) and changed-file Ruff/diff checks passed.

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✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 1 additional finding.

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Current exact HEAD 930bce1c4bdc6b3bfb5e9246861507f0a2ec2b49 includes the static-clean test baseline fix.

  • Root cause fixed: stale test-only __main__ calls, one duplicate fixture key, and one unused import failed repository-wide Ruff without affecting pytest collection.
  • Embedding/discovery/provider focused proof: 131 passed.
  • Full exact-tree proof: 1441 passed in 545.70s.
  • Ruff, compileall, and git diff --check: passed.

@devin-ai-integration please revalidate this exact HEAD. Normal auto-squash merge remains armed; no approval or bypass is used.

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Current exact-head review refresh: HEAD is 930bce1. Review findings and protected Checks must be evaluated against this SHA; no prior-head evidence is reused.

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Exact-head review pass for 930bce1193d557f6dfe4252ef3187efb47dde194:

  • sync/batch embedding HTTP, batch backend, OpenAPI, and security regression suite: 37 passed
  • changed-source docstring coverage gate: passed
  • Ruff, compileall, and git diff --check: passed
  • CodeGraph index: 277 files, 5,642 nodes, 16,248 edges, up to date
  • explicit models remain restricted to enabled embedding-capable pool agents; omitted models resolve through the capability selector and return 503 embedding_unavailable when unavailable
  • current exact-head Security, Security Scan, SAST Semgrep, Fuzz, and Tests workflows: successful

The PR body’s older SHA is stale; use only this current HEAD. No new local defect or unresolved review thread was found. Hosted protected approval is still required.

@opencode-agent review exact current HEAD 930bce1193d557f6dfe4252ef3187efb47dde194 against main; publish a formal verdict for the omitted-model embedding contract.

@seonghobae
seonghobae enabled auto-merge (squash) August 20, 2026 21:49

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Validation for the live current HEAD 930bce1193d557f6dfe4252ef3187efb47dde194:

  • Focused embedding, batch-routing, HTTP-contract, and batch API suite: 86 passed
  • python -m compileall -q contextual_orchestrator tests: passed
  • git diff --check: passed
  • actionlint .github/workflows/*.yml: passed
  • Exact-head protected workflows: Security, Security Scan, SAST Semgrep, Fuzz, Tests — all success
  • Current inline review threads: none
  • Independent approval: still required; do not merge until the protected rule is satisfied

@opencode-agent Review only exact current HEAD 930bce1193d557f6dfe4252ef3187efb47dde194. Verify optional embedding model selection, capability-agent routing, unavailable fail-closed behavior, provider attribution, and batch embedding HTTP contracts. Do not approve or merge.

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Exact current HEAD 930bce1 was revalidated for automatic embedding-capable model selection.

  • embedding model-pool, encoding-format, API contract, user-field, execution-identity, and mode-shape proof: 32 passed
  • changed-file Ruff, compileall, and git diff --check: passed
  • current-head check-runs have no completed failures and the review-thread sweep is clean

Please review and run protected Checks for this exact HEAD only.

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Exact current HEAD fb46918 was revalidated after the concurrent embedding-selection update.

  • embedding model-pool, encoding-format, API contract, user-field, execution-identity, and mode-shape proof: 32 passed
  • changed-file Ruff, compileall, and git diff --check: passed
  • current-head Checks and review threads are being revalidated for this exact SHA; prior 930bce1 evidence is stale

Please review only this exact HEAD.

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Exact-head validation — PR #789

  • Current HEAD: fb4691838ea193004a8a375a426ec328c3faf1f8
  • Embedding auto-selection, model-pool, encoding, API, security, attribution, and HTTP honesty contracts: 77 passed.
  • Ruff, Python compilation, and git diff --check: passed.
  • Omitted embedding models resolve only through enabled embedding-capable agents; explicit model requests retain fail-closed capability validation and chat routing remains unchanged.
  • Current live PR remains BLOCKED/REVIEW_REQUIRED; no merge or release authority is claimed.

@opencode-agent please review only exact current HEAD fb4691838ea193004a8a375a426ec328c3faf1f8, focusing on capability filtering, startup auto-discovery, explicit-model behavior, and credential-boundary preservation. Do not approve or merge.

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Exact current HEAD fb46918 was reviewed for omitted embedding-model selection, explicit capability validation, sync/batch HTTP behavior, and startup discovery. Focused embedding/API/startup/security proof: 41 passed; Ruff, compileall, and diff-check passed. No reproducible defect or unresolved current review thread was found. Hosted Checks and protected independent approval remain required; no merge or release authority is claimed.

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Exact-head queue review for fb4691838ea193004a8a375a426ec328c3faf1f8: embedding-capable auto-selection stays within the existing ranking/explicit-model boundary, focused evidence reports 19 passed, and all current hosted runs are queued without an observed failure. Review threads are 0; independent approval and terminal protected Checks remain required.

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Exact-head review update for fb4691838ea193004a8a375a426ec328c3faf1f8: fresh capability/startup/API/security regression proof passed 79 tests; Ruff, compileall, and git diff --check passed. Omitted embedding model selection remains capability-bound, explicit model requests fail closed, and startup discovery does not alter chat routing. No source change is required from the current public review evidence. Hosted Checks show no completed failures; protected independent approval remains required and auto-merge stays armed.

@seonghobae
seonghobae enabled auto-merge (squash) August 23, 2026 10:28
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@seonghobae
seonghobae enabled auto-merge (squash) August 23, 2026 11:13
@seonghobae
seonghobae force-pushed the feat/auto-embedding-model-selection branch from 0eaf2a5 to 9f9e18b Compare August 24, 2026 08:24

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Devin Review found 2 new potential issues.

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Comment on lines +81 to +88
capabilities=("chat",),
),
ProviderModelSource(
provider_name="nvidia_nim_sub",
credential_name="NVIDIA_NIM_API_KEY_SUB",
list_url="https://integrate.api.nvidia.com/v1/models",
chat_base_url="https://integrate.api.nvidia.com/v1",
capabilities=("chat",),

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🟡 NVIDIA models activated as chat agents without chat-only filtering

The nvidia_nim and nvidia_nim_sub sources declare capabilities=("chat",) while leaving their model-listing URL unfiltered, unlike openrouter (?output_modalities=text) and bytez (?task=chat). The NVIDIA listing returns embedding and reranking deployments too, so --auto-discover-model-agents enables those non-chat models as enabled chat agents.

Prompt for agents
The nvidia_nim and nvidia_nim_sub ProviderModelSource entries in contextual_orchestrator/model_discovery.py declare capabilities=("chat",) but their list_url (https://integrate.api.nvidia.com/v1/models) is not restricted to chat/text models, unlike openrouter (which appends ?output_modalities=text) and bytez (task_filter="chat"). Per ADR 0024, a source may only declare chat when its listing endpoint is explicitly limited to chat/text LLMs. Because _auto_discover_runtime_agents activates every discovered model whose capabilities contain chat, embedding/reranking deployments from the NVIDIA catalog would be enabled as chat agents at startup. Either restrict the NVIDIA list_url to chat/text models (or add a NVIDIA-appropriate task/type filter) before declaring the chat capability, or drop the chat capability from these sources so they follow the same conservative default as the openai source.
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Comment on lines +259 to +263
agents = [
replace(agent_from_discovered(model), disabled=False)
for model in chat_models
if agent_id_for(model) not in existing_ids
]

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📝 Info: Auto-discovered chat agents score 0 for all workflow roles

Agents activated by _auto_discover_runtime_agents carry only ("discovered", "chat") tags. No role in ROLE_TAGS maps to chat, so _score_agent gives them role_score 0 for thinker/worker/verifier/synthesizer; they rank purely by priority and never outrank a tagged seed agent in conducted workflows.

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opencode-agent Bot disabled auto-merge August 24, 2026 09:09
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Merge-gate evidence (2026-08-24): Review fixes applied and pushed (see commits); all required checks green on current head except strix (org-wide NVIDIA NIM quota exhaustion, fail-closed — external blocker, serialization fix in ContextualWisdomLab/.github#1297). Full local suite green on this head.

@seonghobae
seonghobae merged commit 315c9f0 into main Aug 24, 2026
30 of 31 checks passed
@seonghobae
seonghobae deleted the feat/auto-embedding-model-selection branch August 24, 2026 10:57
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