diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index abc10bd9..bd5bd006 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -187,6 +187,9 @@ jobs:
     - name: Validate Dotnet Idempotency Contract
       run: python3 tools/validate_dotnet_idempotency_contract_v1.py
 
+    - name: Validate Dotnet CICD Chain Contract
+      run: python3 tools/validate_dotnet_cicd_chain_contract_v1.py
+
 
 
     - name: Build Calibration Priority Backlog
diff --git a/AGENTS.md b/AGENTS.md
index bd4059d8..3512b48f 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -104,6 +104,7 @@
 - `docs/WBS_10_DOTNET_SCHEDULER_CONTRACT.yaml`: WBS-10 scheduler state machine 계약.
 - `docs/WBS_10_DOTNET_NORMALIZATION_CONTRACT.yaml`: WBS-10 normalization/read model 계약.
 - `docs/WBS_10_DOTNET_IDEMPOTENCY_CONTRACT.yaml`: WBS-10 idempotency/lock 계약.
+- `docs/WBS_10_DOTNET_CICD_CHAIN_CONTRACT.yaml`: WBS-10 CI/CD 순차 게이트 계약.
 - `tools/validate_dotnet_migration_roadmap_v1.py`: WBS-10 상세 로드맵 YAML validator.
 - `tools/validate_dotnet_migration_execution_plan_v1.py`: WBS-10 실행 분해 계획 validator.
 - `tools/validate_dotnet_parity_contract_v1.py`: WBS-10 parity 계약 validator.
@@ -111,6 +112,7 @@
 - `tools/validate_dotnet_scheduler_contract_v1.py`: WBS-10 scheduler 계약 validator.
 - `tools/validate_dotnet_normalization_contract_v1.py`: WBS-10 normalization 계약 validator.
 - `tools/validate_dotnet_idempotency_contract_v1.py`: WBS-10 idempotency 계약 validator.
+- `tools/validate_dotnet_cicd_chain_contract_v1.py`: WBS-10 CI/CD chain 계약 validator.
 - `Temp/snapshot_admin_approval_packet_v1.json`: snapshot admin approval packet export.
 - `Temp/snapshot_admin_approval_packet_v1.md`: snapshot admin approval packet summary.
 - `Temp/`: 실행 결과와 캐시. 라우팅 대상은 아니며 runtime consumer만 읽는다.
diff --git a/docs/ROADMAP_WBS.md b/docs/ROADMAP_WBS.md
index 3c02437d..0b5770cf 100644
--- a/docs/ROADMAP_WBS.md
+++ b/docs/ROADMAP_WBS.md
@@ -1473,6 +1473,7 @@ WBS-8.8 (KIS 리팩터) — 독립적 (원격 병행)
 > scheduler contract: [WBS_10_DOTNET_SCHEDULER_CONTRACT.yaml](./WBS_10_DOTNET_SCHEDULER_CONTRACT.yaml)
 > normalization contract: [WBS_10_DOTNET_NORMALIZATION_CONTRACT.yaml](./WBS_10_DOTNET_NORMALIZATION_CONTRACT.yaml)
 > idempotency contract: [WBS_10_DOTNET_IDEMPOTENCY_CONTRACT.yaml](./WBS_10_DOTNET_IDEMPOTENCY_CONTRACT.yaml)
+> ci/cd chain contract: [WBS_10_DOTNET_CICD_CHAIN_CONTRACT.yaml](./WBS_10_DOTNET_CICD_CHAIN_CONTRACT.yaml)
 
 > 현황 진단(2026-06-26): .NET 프로젝트는 Python 엔진(41 모듈, 14,500 LOC) 대비 5~10%(~1,400 LOC) 수준.
 > Domain 계산기 6개·데이터 모델 8개·KIS/Naver/Yahoo 클라이언트·PostgreSQL 마이그레이션·Razor Pages 어드민 대시보드 기본 구현 완료.
diff --git a/docs/WBS_10_DOTNET_CICD_CHAIN_CONTRACT.yaml b/docs/WBS_10_DOTNET_CICD_CHAIN_CONTRACT.yaml
new file mode 100644
index 00000000..05d47ef0
--- /dev/null
+++ b/docs/WBS_10_DOTNET_CICD_CHAIN_CONTRACT.yaml
@@ -0,0 +1,48 @@
+formula_id: WBS_10_DOTNET_CICD_CHAIN_CONTRACT_V1
+owner: QuantEngine
+status: draft
+goal: "CI, prepare-release, deploy-prod 순차 게이트를 고정한다."
+
+workflows:
+  ci:
+    file: .gitea/workflows/ci.yml
+    name: "Validators (Pushes and Pull Requests)"
+    triggers:
+      - push: main
+      - pull_request: main
+    role: "upstream validator"
+  prepare_release:
+    file: .gitea/workflows/prepare-release.yml
+    name: "Prepare Release"
+    triggers:
+      - workflow_run: Validators (Pushes and Pull Requests)
+      - workflow_dispatch
+    role: "release builder"
+    upstream_gate: "Validators (Pushes and Pull Requests) success"
+  deploy_prod:
+    file: .gitea/workflows/deploy-prod.yml
+    name: "Deploy to Production"
+    triggers:
+      - workflow_run: Prepare Release
+      - workflow_dispatch
+    role: "production deployer"
+    upstream_gate: "Prepare Release success"
+
+dependency_chain:
+  - "Validators (Pushes and Pull Requests) -> Prepare Release -> Deploy to Production"
+
+required_guards:
+  - "prepare-release는 Validators 성공 없이는 실행 금지"
+  - "deploy-prod는 Prepare Release 성공 없이는 실행 금지"
+  - "deploy-prod는 upstream CI SHA를 release tag와 대조"
+  - "모든 단계는 concurrency group을 사용해 동일 SHA 중복 실행을 차단"
+
+health_checks:
+  - "upstream workflow conclusion == success"
+  - "release tag sha matches workflow_run head_sha"
+  - "artifact 존재 확인"
+  - "SSH/Gitea secret 존재 확인"
+
+notes:
+  - "순차 게이트는 workflow_run 연결과 검증 스텝 둘 다 필요하다."
+  - "병렬 실행은 금지된다."
diff --git a/spec/41_release_dag.yaml b/spec/41_release_dag.yaml
index 6922291e..eb9f9eef 100644
--- a/spec/41_release_dag.yaml
+++ b/spec/41_release_dag.yaml
@@ -2393,6 +2393,22 @@ dag:
       - Temp/wbs_10_dotnet_idempotency_contract_v1.json
       strict: true
       timeout_sec: 60
+    validate_dotnet_cicd_chain_contract:
+      artifact_policy: keep
+      cache_key: validate_dotnet_cicd_chain_contract_v1
+      command:
+      - python
+      - tools/validate_dotnet_cicd_chain_contract_v1.py
+      depends_on: []
+      id: validate_dotnet_cicd_chain_contract
+      inputs:
+      - tools/validate_dotnet_cicd_chain_contract_v1.py
+      - docs/WBS_10_DOTNET_CICD_CHAIN_CONTRACT.yaml
+      note: WBS-10 CI → Prepare Release → Deploy to Production 순차 게이트를 검증한다.
+      outputs:
+      - Temp/wbs_10_dotnet_cicd_chain_contract_v1.json
+      strict: true
+      timeout_sec: 60
     validate_specs:
       artifact_policy: keep
       cache_key: validate_specs_v1
diff --git a/tests/unit/test_validate_dotnet_cicd_chain_contract_v1.py b/tests/unit/test_validate_dotnet_cicd_chain_contract_v1.py
new file mode 100644
index 00000000..5b72b07c
--- /dev/null
+++ b/tests/unit/test_validate_dotnet_cicd_chain_contract_v1.py
@@ -0,0 +1,38 @@
+from __future__ import annotations
+
+import json
+import subprocess
+import sys
+from pathlib import Path
+
+
+def test_validate_dotnet_cicd_chain_contract_passes() -> None:
+    root = Path(__file__).resolve().parents[2]
+    proc = subprocess.run(
+        [sys.executable, str(root / "tools" / "validate_dotnet_cicd_chain_contract_v1.py")],
+        cwd=root,
+        capture_output=True,
+        text=True,
+    )
+    assert proc.returncode == 0, proc.stdout + proc.stderr
+    payload = json.loads(proc.stdout)
+    assert payload["gate"] == "PASS"
+
+
+def test_validate_dotnet_cicd_chain_contract_reports_missing_chain() -> None:
+    root = Path(__file__).resolve().parents[2]
+    temp = root / "Temp" / "test_wbs_10_cicd_chain_contract_bad.yaml"
+    temp.write_text(
+        "formula_id: WBS_10_DOTNET_CICD_CHAIN_CONTRACT_V1\ngoal: CI, prepare-release, deploy-prod 순차 게이트를 고정한다.\nworkflows:\n  ci:\n    name: Validators (Pushes and Pull Requests)\n  prepare_release:\n    name: Prepare Release\n  deploy_prod:\n    name: Deploy to Production\ndependency_chain: []\nrequired_guards: [a,b,c,d]\nhealth_checks: [a,b,c,d]\n",
+        encoding="utf-8",
+    )
+    proc = subprocess.run(
+        [sys.executable, str(root / "tools" / "validate_dotnet_cicd_chain_contract_v1.py"), "--contract", str(temp)],
+        cwd=root,
+        capture_output=True,
+        text=True,
+    )
+    assert proc.returncode != 0
+    payload = json.loads(proc.stdout)
+    assert payload["gate"] == "FAIL"
+    assert "dependency_chain" in payload["missing"]
diff --git a/tools/validate_dotnet_cicd_chain_contract_v1.py b/tools/validate_dotnet_cicd_chain_contract_v1.py
new file mode 100644
index 00000000..5a25bf16
--- /dev/null
+++ b/tools/validate_dotnet_cicd_chain_contract_v1.py
@@ -0,0 +1,83 @@
+#!/usr/bin/env python3
+from __future__ import annotations
+
+import argparse
+import json
+from pathlib import Path
+from typing import Any
+
+import yaml
+
+
+EXPECTED = {
+    "ci": "Validators (Pushes and Pull Requests)",
+    "prepare_release": "Prepare Release",
+    "deploy_prod": "Deploy to Production",
+}
+
+
+def load_yaml(path: Path) -> dict[str, Any]:
+    if not path.exists():
+        raise FileNotFoundError(path)
+    return yaml.safe_load(path.read_text(encoding="utf-8"))
+
+
+def main(argv: list[str] | None = None) -> int:
+    parser = argparse.ArgumentParser(description="Validate WBS-10 dotnet CICD chain contract")
+    parser.add_argument("--contract", default="docs/WBS_10_DOTNET_CICD_CHAIN_CONTRACT.yaml")
+    args = parser.parse_args(argv)
+
+    contract_path = Path(args.contract).resolve()
+    payload: dict[str, Any] = {
+        "formula_id": "WBS_10_DOTNET_CICD_CHAIN_CONTRACT_V1",
+        "gate": "FAIL",
+        "missing": [],
+        "evidence": {"contract": str(contract_path)},
+    }
+
+    try:
+        data = load_yaml(contract_path)
+    except FileNotFoundError:
+        payload["missing"].append("contract missing")
+        print(json.dumps(payload, ensure_ascii=False, indent=2))
+        return 1
+
+    if data.get("formula_id") != "WBS_10_DOTNET_CICD_CHAIN_CONTRACT_V1":
+        payload["missing"].append("formula_id")
+    if data.get("goal") != "CI, prepare-release, deploy-prod 순차 게이트를 고정한다.":
+        payload["missing"].append("goal")
+
+    workflows = data.get("workflows") or {}
+    for key, expected_name in EXPECTED.items():
+        node = workflows.get(key) or {}
+        if node.get("name") != expected_name:
+            payload["missing"].append(f"workflows.{key}.name")
+
+    chain = data.get("dependency_chain") or []
+    if "Validators (Pushes and Pull Requests) -> Prepare Release -> Deploy to Production" not in chain:
+        payload["missing"].append("dependency_chain")
+
+    guards = data.get("required_guards") or []
+    if len(guards) < 4:
+        payload["missing"].append("required_guards")
+
+    checks = data.get("health_checks") or []
+    if len(checks) < 4:
+        payload["missing"].append("health_checks")
+
+    payload["gate"] = "PASS" if not payload["missing"] else "FAIL"
+    payload["message"] = (
+        "WBS-10 dotnet CICD chain contract validation passed."
+        if payload["gate"] == "PASS"
+        else "WBS-10 dotnet CICD chain contract validation failed."
+    )
+
+    out_path = contract_path.parent.parent / "Temp" / "wbs_10_dotnet_cicd_chain_contract_v1.json"
+    out_path.parent.mkdir(parents=True, exist_ok=True)
+    out_path.write_text(json.dumps(payload, ensure_ascii=False, indent=2), encoding="utf-8")
+    print(json.dumps(payload, ensure_ascii=False, indent=2))
+    return 0 if payload["gate"] == "PASS" else 1
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())