diff --git a/app/Http/Controllers/Api/V1/MaterialController.php b/app/Http/Controllers/Api/V1/MaterialController.php
index cbbed0a..0a96d90 100644
--- a/app/Http/Controllers/Api/V1/MaterialController.php
+++ b/app/Http/Controllers/Api/V1/MaterialController.php
@@ -4,15 +4,18 @@
 
 use Illuminate\Http\Request;
 use App\Http\Controllers\Controller;
-use App\Services\MeterialService;
+use App\Services\MaterialService;
 use App\Helpers\ApiResponse;
 
-class MaterialController
+class MaterialController extends Controller
 {
+
+    public function __construct(private MaterialService $service) {}
+
     public function index(Request $request)
     {
         return ApiResponse::handle(function () use ($request) {
-            return MeterialService::getMeterials($request);
+            return $this->service->getMaterials($request->all());
         }, '제품 목록 조회');
     }
 
@@ -20,7 +23,7 @@ public function index(Request $request)
     public function store(Request $request)
     {
         return ApiResponse::handle(function () use ($request) {
-            return MeterialService::setMeterial($request);
+            return $this->service->setMaterial($request->all());
         }, '제품 등록');
     }
 
@@ -28,7 +31,7 @@ public function store(Request $request)
     public function show(Request $request, int $id)
     {
         return ApiResponse::handle(function () use ($id) {
-            return MeterialService::getMeterial($id);
+            return $this->service->getMaterial($id);
         }, '특정제품 상세 조회');
     }
 
@@ -36,7 +39,7 @@ public function show(Request $request, int $id)
     public function update(Request $request, int $id)
     {
         return ApiResponse::handle(function () use ($id) {
-            return MeterialService::updateMeterial($id);
+            return $this->service->updateMaterial($id);
         }, '제품 수정');
     }
 
@@ -44,7 +47,7 @@ public function update(Request $request, int $id)
     public function destroy(Request $request, int $id)
     {
         return ApiResponse::handle(function () use ($id) {
-            return MeterialService::destoryMeterial($id);
+            return $this->service->destroyMaterial($id);
         }, '제품 삭제');
     }
 }
diff --git a/app/Models/Materials/Material.php b/app/Models/Materials/Material.php
index a832e22..0aaf330 100644
--- a/app/Models/Materials/Material.php
+++ b/app/Models/Materials/Material.php
@@ -5,6 +5,8 @@
 use App\Models\Commons\File;
 use App\Models\Commons\Tag;
 use App\Models\Qualitys\Lot;
+use App\Traits\ModelTrait;
+use App\Traits\BelongsToTenant;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\SoftDeletes;
 
@@ -13,20 +15,13 @@
  */
 class Material extends Model
 {
-    use SoftDeletes;
+    use SoftDeletes, ModelTrait, BelongsToTenant;
 
-    // 자재(품목) 마스터
-    protected $fillable = [
-        'name',             // 자재명(품명)
-        'specification',    // 규격
-        'material_code',    // 자재코드
-        'unit',             // 단위
-        'is_inspection',    // 검사대상 여부(Y/N)
-        'search_tag',       // 검색 태그
-        'remarks',          // 비고
+    protected $casts = [
+        'attributes' => 'array',
+        'options'    => 'array',
     ];
 
-
     // 자재 입고 내역
     public function receipts()
     {
diff --git a/app/Services/MaterialService.php b/app/Services/MaterialService.php
new file mode 100644
index 0000000..246e44c
--- /dev/null
+++ b/app/Services/MaterialService.php
@@ -0,0 +1,297 @@
+<?php
+
+namespace App\Services;
+
+use Illuminate\Support\Facades\Validator;
+use App\Models\Materials\Material;
+
+class MaterialService extends Service
+{
+    /** 공통 검증 헬퍼 */
+    protected function v(array $input, array $rules)
+    {
+        $v = Validator::make($input, $rules);
+        if ($v->fails()) {
+            return ['error' => $v->errors()->first(), 'code' => 422];
+        }
+        return $v->validated();
+    }
+
+    /** 목록 */
+    public function getMaterials(array $params)
+    {
+        $tenantId = $this->tenantId();
+
+        $p = $this->v($params, [
+            'q'        => 'nullable|string|max:100',
+            'category' => 'nullable|integer|min:1',
+            'page'     => 'nullable|integer|min:1',
+            'per_page' => 'nullable|integer|min:1|max:200',
+        ]);
+        if (isset($p['error'])) return $p;
+
+        $q = Material::query()
+            ->where('tenant_id', $tenantId); // SoftDeletes가 있으면 기본적으로 deleted_at IS NULL
+
+        if (!empty($p['category'])) {
+            $q->where('category_id', (int)$p['category']);
+        }
+        if (!empty($p['q'])) {
+            $kw = '%' . $p['q'] . '%';
+            $q->where(function ($w) use ($kw) {
+                $w->where('item_name', 'like', $kw)
+                    ->orWhere('name', 'like', $kw)
+                    ->orWhere('material_code', 'like', $kw)
+                    ->orWhere('search_tag', 'like', $kw);
+            });
+        }
+
+        $q->orderByDesc('id');
+
+        $perPage = $p['per_page'] ?? 20;
+        $page    = $p['page'] ?? null;
+
+        return $q->paginate($perPage, ['*'], 'page', $page);
+    }
+
+    /** 단건 조회 */
+    public function getMaterial(int $id)
+    {
+        $tenantId = $this->tenantId();
+
+        /** @var Material|null $row */
+        $row = Material::query()
+            ->where('tenant_id', $tenantId)
+            ->find($id);
+
+        if (!$row) return ['error' => '자재를 찾을 수 없습니다.', 'code' => 404];
+
+        // 모델에서 casts가 없을 수 있으니 안전하게 배열화
+        $row->attributes = is_array($row->attributes) ? $row->attributes : ($row->attributes ? json_decode($row->attributes, true) : null);
+        $row->options    = is_array($row->options)    ? $row->options    : ($row->options ? json_decode($row->options, true) : null);
+
+        return $row;
+    }
+
+    /** 등록 */
+    public function setMaterial(array $params)
+    {
+        $tenantId = $this->tenantId();
+        $userId   = $this->apiUserId();
+
+        $p = $this->v($params, [
+            'category_id'   => 'nullable|integer|min:1',
+            'name'          => 'required|string|max:100',
+            'unit'          => 'required|string|max:10',
+            'is_inspection' => 'nullable|in:Y,N',
+            'search_tag'    => 'nullable|string',
+            'remarks'       => 'nullable|string',
+            'attributes'    => 'nullable|array', // [{label,value,unit}] 또는 map
+            'options'       => 'nullable|array', // [{label,value,unit}] 또는 map
+            'material_code' => 'nullable|string|max:50',
+            'specification' => 'nullable|string|max:100',
+        ]);
+        if (isset($p['error'])) return $p;
+
+        // 기존 normalizeAttributes 사용(그대로), options는 새 normalizeOptions 사용
+        $attributes = $this->normalizeAttributes($p['attributes'] ?? null);
+        $options    = $this->normalizeOptions($p['options'] ?? null);
+
+        $itemName = $this->buildItemName($p['name'], $attributes);
+        $specText = $p['specification'] ?? $this->buildSpecText($attributes);
+
+        $m = new Material();
+        $m->tenant_id     = $tenantId;
+        $m->category_id   = $p['category_id'] ?? null;
+        $m->name          = $p['name'];
+        $m->item_name     = $itemName;
+        $m->specification = $specText;
+        $m->material_code = $p['material_code'] ?? null;
+        $m->unit          = $p['unit'];
+        $m->is_inspection = $p['is_inspection'] ?? 'N';
+        $m->search_tag    = $p['search_tag'] ?? null;
+        $m->remarks       = $p['remarks'] ?? null;
+        $m->attributes    = $attributes ?? null;
+        $m->options       = $options ?? null;
+        $m->created_by    = $userId ?? 0;
+        $m->updated_by    = $userId ?? null;
+        $m->save();
+
+        return $this->getMaterial($m->id);
+    }
+
+    /** 수정 */
+    public function updateMaterial(int $id, array $params = [])
+    {
+        $tenantId = $this->tenantId();
+        $userId   = $this->apiUserId();
+
+        /** @var Material|null $exists */
+        $exists = Material::query()->where('tenant_id', $tenantId)->find($id);
+        if (!$exists) return ['error' => '자재를 찾을 수 없습니다.', 'code' => 404];
+
+        $p = $this->v($params, [
+            'category_id'   => 'nullable|integer|min:1',
+            'name'          => 'nullable|string|max:100',
+            'unit'          => 'nullable|string|max:10',
+            'is_inspection' => 'nullable|in:Y,N',
+            'search_tag'    => 'nullable|string',
+            'remarks'       => 'nullable|string',
+            'attributes'    => 'nullable|array', // [{label,value,unit}] 또는 map
+            'options'       => 'nullable|array', // [{label,value,unit}] 또는 map
+            'material_code' => 'nullable|string|max:50',
+            'specification' => 'nullable|string|max:100',
+        ]);
+        if (isset($p['error'])) return $p;
+
+        $currentAttrs = is_array($exists->attributes) ? $exists->attributes
+            : ($exists->attributes ? json_decode($exists->attributes, true) : null);
+        $currentOpts  = is_array($exists->options) ? $exists->options
+            : ($exists->options ? json_decode($exists->options, true) : null);
+
+        // 변경 점만 정규화
+        $attrs = array_key_exists('attributes', $p)
+            ? $this->normalizeAttributes($p['attributes'])
+            : $currentAttrs;
+        $opts  = array_key_exists('options', $p)
+            ? $this->normalizeOptions($p['options'])
+            : $currentOpts;
+
+        $baseName  = array_key_exists('name', $p) ? ($p['name'] ?? $exists->name) : $exists->name;
+
+        $exists->category_id   = $p['category_id'] ?? $exists->category_id;
+        $exists->name          = $baseName;
+        $exists->item_name     = $this->buildItemName($baseName, $attrs);
+        $exists->specification = array_key_exists('specification', $p)
+            ? ($p['specification'] ?? null)
+            : ($exists->specification ?: $this->buildSpecText($attrs));
+        $exists->material_code = $p['material_code'] ?? $exists->material_code;
+        $exists->unit          = $p['unit'] ?? $exists->unit;
+        $exists->is_inspection = $p['is_inspection'] ?? $exists->is_inspection;
+        $exists->search_tag    = $p['search_tag'] ?? $exists->search_tag;
+        $exists->remarks       = $p['remarks'] ?? $exists->remarks;
+
+        if (array_key_exists('attributes', $p)) $exists->attributes = $attrs;
+        if (array_key_exists('options', $p))    $exists->options    = $opts;
+
+        $exists->updated_by = $userId ?? $exists->updated_by;
+        $exists->save();
+
+        return $this->getMaterial($exists->id);
+    }
+
+    /** 삭제(소프트) */
+    public function destroyMaterial(int $id)
+    {
+        $tenantId = $this->tenantId();
+
+        /** @var Material|null $row */
+        $row = Material::query()
+            ->where('tenant_id', $tenantId)
+            ->find($id);
+
+        if (!$row) return ['error' => '자재를 찾을 수 없습니다.', 'code' => 404];
+
+        $row->delete();
+
+        return ['id' => $id, 'deleted_at' => now()->toDateTimeString()];
+    }
+
+    /* -------------------------
+       헬퍼: 규격/품목명 빌더
+       attributes 예시:
+       [
+         {"label":"두께","value":"10","unit":"T"},
+         {"label":"길이","value":"150","unit":"CM"}
+       ]
+       → item_name: "철판 10T 150CM"
+       → specification: "두께 10T, 길이 150CM"
+    ------------------------- */
+
+    private function normalizeAttributes(null|array $attrs): ?array
+    {
+        if (!$attrs) return null;
+
+        $out = [];
+        foreach ($attrs as $a) {
+            if (!is_array($a)) continue;
+            $label = trim((string)($a['label'] ?? ''));
+            $value = trim((string)($a['value'] ?? ''));
+            $unit  = trim((string)($a['unit']  ?? ''));
+            if ($label === '' && $value === '' && $unit === '') continue;
+
+            $out[] = ['label' => $label, 'value' => $value, 'unit' => $unit];
+        }
+        return $out ?: null;
+    }
+
+    private function buildItemName(string $name, ?array $attrs): string
+    {
+        if (!$attrs || count($attrs) === 0) return $name;
+
+        $parts = [];
+        foreach ($attrs as $a) {
+            $value = (string)($a['value'] ?? '');
+            $unit  = (string)($a['unit']  ?? '');
+            $chunk = trim($value . $unit);
+            if ($chunk !== '') $parts[] = $chunk;
+        }
+        return trim($name . ' ' . implode(' ', $parts));
+    }
+
+    private function buildSpecText(?array $attrs): ?string
+    {
+        if (!$attrs || count($attrs) === 0) return null;
+
+        $parts = [];
+        foreach ($attrs as $a) {
+            $label = (string)($a['label'] ?? '');
+            $value = (string)($a['value'] ?? '');
+            $unit  = (string)($a['unit']  ?? '');
+            $valueWithUnit = trim($value . $unit);
+
+            if ($label !== '' && $valueWithUnit !== '') {
+                $parts[] = "{$label} {$valueWithUnit}";
+            } elseif ($valueWithUnit !== '') {
+                $parts[] = $valueWithUnit;
+            }
+        }
+        return $parts ? implode(', ', $parts) : null;
+    }
+
+    /**
+     * options 입력을 [{label,value,unit}] 형태로 정규화.
+     * - 이미 리스트(triple)면 그대로 정규화
+     * - 맵({"키":"값"})이면 [{label:키, value:값, unit:""}...]로 변환
+     */
+    private function normalizeOptions(null|array $in): ?array
+    {
+        if (!$in) return null;
+
+        // 연관 맵 형태인지 간단 판별
+        $isAssoc = array_keys($in) !== range(0, count($in) - 1);
+
+        if ($isAssoc) {
+            $out = [];
+            foreach ($in as $k => $v) {
+                $label = trim((string)$k);
+                $value = is_scalar($v) ? trim((string)$v) : json_encode($v, JSON_UNESCAPED_UNICODE);
+                if ($label === '' && $value === '') continue;
+                $out[] = ['label' => $label, 'value' => $value, 'unit' => ''];
+            }
+            return $out ?: null;
+        }
+
+        // 리스트(triple) 정규화
+        $out = [];
+        foreach ($in as $a) {
+            if (!is_array($a)) continue;
+            $label = trim((string)($a['label'] ?? ''));
+            $value = trim((string)($a['value'] ?? ''));
+            $unit  = trim((string)($a['unit']  ?? ''));
+            if ($label === '' && $value === '' && $unit === '') continue;
+            $out[] = ['label' => $label, 'value' => $value, 'unit' => $unit];
+        }
+        return $out ?: null;
+    }
+}
diff --git a/app/Services/MeterialService.php b/app/Services/MeterialService.php
deleted file mode 100644
index 6bb51a9..0000000
--- a/app/Services/MeterialService.php
+++ /dev/null
@@ -1,42 +0,0 @@
-<?php
-
-namespace App\Services;
-
-use Illuminate\Support\Facades\DB;
-use App\Models\Materials\Material;
-
-class MeterialService
-{
-    public static function getMeterials()
-    {
-        $query = new Material();
-        return $query->get();
-    }
-
-    public static function setMeterial()
-    {
-        $query = DB::table('COM_CODE')
-            ->select(['CODE_TP_ID', 'CODE_ID', 'CODE_VAL', 'CODE_DESC', 'USE_YN']);
-        return $query->get();
-    }
-
-    public static function getMeterial(int $id)
-    {
-        $query = Material::find($id);
-        return $query->get();
-    }
-
-    public static function updateMeterial(int $id)
-    {
-        $query = DB::table('COM_CODE')
-            ->select(['CODE_TP_ID', 'CODE_ID', 'CODE_VAL', 'CODE_DESC', 'USE_YN']);
-        return $query->get();
-    }
-
-    public static function destoryMeterial(int $id)
-    {
-        $query = DB::table('COM_CODE')
-            ->select(['CODE_TP_ID', 'CODE_ID', 'CODE_VAL', 'CODE_DESC', 'USE_YN']);
-        return $query->get();
-    }
-}
diff --git a/app/Swagger/v1/MaterialApi.php b/app/Swagger/v1/MaterialApi.php
index d0f5381..254dbbe 100644
--- a/app/Swagger/v1/MaterialApi.php
+++ b/app/Swagger/v1/MaterialApi.php
@@ -2,6 +2,297 @@
 
 namespace App\Swagger\v1;
 
+/**
+ * @OA\Tag(
+ *   name="Material",
+ *   description="자재 관리(목록/등록/조회/수정/삭제)"
+ * )
+ */
 
+/**
+ * 공통 응답 스키마
+ */
+/**
+ * @OA\Schema(
+ *   schema="ApiResponse",
+ *   type="object",
+ *   required={"success","message"},
+ *   @OA\Property(property="success", type="boolean", example=true),
+ *   @OA\Property(property="message", type="string", example="자재 목록 조회 성공"),
+ *   @OA\Property(property="data", nullable=true)
+ * )
+ *
+ * @OA\Schema(
+ *   schema="ErrorResponse",
+ *   type="object",
+ *   required={"success","message"},
+ *   @OA\Property(property="success", type="boolean", example=false),
+ *   @OA\Property(property="message", type="string", example="자재 등록 실패"),
+ *   @OA\Property(property="data", type="null", example=null)
+ * )
+ */
 
-    class MaterialApi {}
+/**
+ * 자재/요청 스키마
+ */
+/**
+ * @OA\Schema(
+ *   schema="MaterialAttribute",
+ *   type="object",
+ *   description="규격 정보 한 항목",
+ *   @OA\Property(property="label", type="string", example="두께"),
+ *   @OA\Property(property="value", type="string", example="10"),
+ *   @OA\Property(property="unit",  type="string", example="T")
+ * )
+ *
+ * @OA\Schema(
+ *   schema="Material",
+ *   type="object",
+ *   description="자재 상세",
+ *   required={"id","tenant_id","name","item_name","unit"},
+ *   @OA\Property(property="id", type="integer", example=101),
+ *   @OA\Property(property="tenant_id", type="integer", example=1),
+ *   @OA\Property(property="category_id", type="integer", nullable=true, example=3),
+ *   @OA\Property(property="name", type="string", example="철판"),
+ *   @OA\Property(property="item_name", type="string", example="철판 10T 150CM"),
+ *   @OA\Property(property="specification", type="string", nullable=true, example="두께 10T, 길이 150CM"),
+ *   @OA\Property(property="material_code", type="string", nullable=true, example=null),
+ *   @OA\Property(property="unit", type="string", example="EA"),
+ *   @OA\Property(property="is_inspection", type="string", enum={"Y","N"}, example="N"),
+ *   @OA\Property(property="search_tag", type="string", nullable=true, example="철판, 판재, 금속"),
+ *   @OA\Property(property="remarks", type="string", nullable=true, example="비고 메모"),
+ *   @OA\Property(
+ *     property="attributes",
+ *     type="array",
+ *     nullable=true,
+ *     @OA\Items(ref="#/components/schemas/MaterialAttribute")
+ *   ),
+ *   @OA\Property(
+ *     property="options",
+ *     type="object",
+ *     nullable=true,
+ *     example={"manufacturer":"ACME","color":"SILVER"}
+ *   ),
+ *   @OA\Property(property="created_by", type="integer", example=12),
+ *   @OA\Property(property="updated_by", type="integer", nullable=true, example=12),
+ *   @OA\Property(property="created_at", type="string", format="date-time", example="2025-08-21 10:00:00"),
+ *   @OA\Property(property="updated_at", type="string", format="date-time", example="2025-08-21 10:00:00")
+ * )
+ *
+ * @OA\Schema(
+ *   schema="MaterialBrief",
+ *   type="object",
+ *   description="자재 요약",
+ *   required={"id","name","item_name","unit"},
+ *   @OA\Property(property="id", type="integer", example=101),
+ *   @OA\Property(property="category_id", type="integer", nullable=true, example=3),
+ *   @OA\Property(property="name", type="string", example="철판"),
+ *   @OA\Property(property="item_name", type="string", example="철판 10T 150CM"),
+ *   @OA\Property(property="unit", type="string", example="EA")
+ * )
+ *
+ * @OA\Schema(
+ *   schema="MaterialList",
+ *   type="array",
+ *   @OA\Items(ref="#/components/schemas/MaterialBrief")
+ * )
+ *
+ * @OA\Schema(
+ *   schema="MaterialIndexParams",
+ *   type="object",
+ *   @OA\Property(property="q", type="string", nullable=true, example="알루미늄"),
+ *   @OA\Property(property="category", type="integer", nullable=true, example=3),
+ *   @OA\Property(property="page", type="integer", nullable=true, example=1),
+ *   @OA\Property(property="per_page", type="integer", nullable=true, example=20)
+ * )
+ *
+ * @OA\Schema(
+ *   schema="MaterialCreateRequest",
+ *   type="object",
+ *   required={"name","unit"},
+ *   @OA\Property(property="category_id", type="integer", nullable=true, example=3),
+ *   @OA\Property(property="name", type="string", example="철판"),
+ *   @OA\Property(property="unit", type="string", example="EA"),
+ *   @OA\Property(property="is_inspection", type="string", enum={"Y","N"}, example="N"),
+ *   @OA\Property(property="search_tag", type="string", nullable=true, example="철판, 판재, 금속"),
+ *   @OA\Property(property="remarks", type="string", nullable=true, example="비고 메모"),
+ *   @OA\Property(
+ *     property="attributes",
+ *     type="array",
+ *     nullable=true,
+ *     @OA\Items(ref="#/components/schemas/MaterialAttribute")
+ *   ),
+ *   @OA\Property(
+ *     property="options",
+ *     type="object",
+ *     nullable=true,
+ *     example={"manufacturer":"ACME","color":"SILVER"}
+ *   ),
+ *   @OA\Property(property="material_code", type="string", nullable=true, example=null),
+ *   @OA\Property(property="specification", type="string", nullable=true, example=null)
+ * )
+ *
+ * @OA\Schema(
+ *   schema="MaterialUpdateRequest",
+ *   type="object",
+ *   @OA\Property(property="category_id", type="integer", nullable=true, example=3),
+ *   @OA\Property(property="name", type="string", nullable=true, example="철판(개선)"),
+ *   @OA\Property(property="unit", type="string", nullable=true, example="KG"),
+ *   @OA\Property(property="is_inspection", type="string", enum={"Y","N"}, nullable=true, example="Y"),
+ *   @OA\Property(property="search_tag", type="string", nullable=true, example="철판, 금속"),
+ *   @OA\Property(property="remarks", type="string", nullable=true, example="비고 변경"),
+ *   @OA\Property(
+ *     property="attributes",
+ *     type="array",
+ *     nullable=true,
+ *     @OA\Items(ref="#/components/schemas/MaterialAttribute")
+ *   ),
+ *   @OA\Property(
+ *     property="options",
+ *     type="object",
+ *     nullable=true,
+ *     example={"manufacturer":"ACME","color":"BLACK"}
+ *   ),
+ *   @OA\Property(property="material_code", type="string", nullable=true, example="MAT-0002"),
+ *   @OA\Property(property="specification", type="string", nullable=true, example="두께 12T, 길이 180CM")
+ * )
+ */
+
+class MaterialApi
+{
+    /**
+     * @OA\Get(
+     *   path="/api/v1/materials",
+     *   summary="자재 목록 조회",
+     *   description="자재 목록을 페이징으로 반환합니다. (q로 코드/이름/태그 검색, category로 분류 필터)",
+     *   tags={"Material"},
+     *   security={{"ApiKeyAuth": {}},{"BearerAuth": {}}},
+     *   @OA\Parameter(name="q", in="query", required=false, @OA\Schema(type="string"), description="검색어(이름/코드/태그 등)"),
+     *   @OA\Parameter(name="category", in="query", required=false, @OA\Schema(type="integer"), description="카테고리 ID"),
+     *   @OA\Parameter(name="page", in="query", required=false, @OA\Schema(type="integer", example=1)),
+     *   @OA\Parameter(name="per_page", in="query", required=false, @OA\Schema(type="integer", example=20)),
+     *   @OA\Response(
+     *     response=200, description="자재 목록 조회 성공",
+     *     @OA\JsonContent(
+     *       allOf={
+     *         @OA\Schema(ref="#/components/schemas/ApiResponse"),
+     *         @OA\Schema(@OA\Property(
+     *           property="data",
+     *           type="object",
+     *           @OA\Property(property="current_page", type="integer", example=1),
+     *           @OA\Property(property="per_page", type="integer", example=20),
+     *           @OA\Property(property="total", type="integer", example=2),
+     *           @OA\Property(property="data", ref="#/components/schemas/MaterialList")
+     *         ))
+     *       }
+     *     )
+     *   )
+     * )
+     */
+    public function index() {}
+
+    /**
+     * @OA\Post(
+     *   path="/api/v1/materials",
+     *   summary="자재 등록",
+     *   description="자재를 등록합니다. item_name/specification은 name+attributes를 기반으로 서버에서 자동 생성됩니다.",
+     *   tags={"Material"},
+     *   security={{"ApiKeyAuth": {}},{"BearerAuth": {}}},
+     *   @OA\RequestBody(required=true, @OA\JsonContent(ref="#/components/schemas/MaterialCreateRequest")),
+     *   @OA\Response(
+     *     response=200, description="자재 등록 성공",
+     *     @OA\JsonContent(
+     *       allOf={
+     *         @OA\Schema(ref="#/components/schemas/ApiResponse"),
+     *         @OA\Schema(@OA\Property(property="data", ref="#/components/schemas/Material"))
+     *       }
+     *     )
+     *   ),
+     *   @OA\Response(response=422, description="검증 실패", @OA\JsonContent(ref="#/components/schemas/ErrorResponse"))
+     * )
+     */
+    public function store() {}
+
+    /**
+     * @OA\Get(
+     *   path="/api/v1/materials/{id}",
+     *   summary="자재 단건 조회",
+     *   tags={"Material"},
+     *   security={{"ApiKeyAuth": {}},{"BearerAuth": {}}},
+     *   @OA\Parameter(name="id", in="path", required=true, @OA\Schema(type="integer", example=101)),
+     *   @OA\Response(
+     *     response=200, description="자재 단건 조회 성공",
+     *     @OA\JsonContent(
+     *       allOf={
+     *         @OA\Schema(ref="#/components/schemas/ApiResponse"),
+     *         @OA\Schema(@OA\Property(property="data", ref="#/components/schemas/Material"))
+     *       }
+     *     )
+     *   ),
+     *   @OA\Response(response=404, description="데이터 없음", @OA\JsonContent(ref="#/components/schemas/ErrorResponse"))
+     * )
+     */
+    public function show() {}
+
+    /**
+     * @OA\Put(
+     *   path="/api/v1/materials/{id}",
+     *   summary="자재 수정(전체)",
+     *   description="자재를 수정합니다. name/attributes 변경 시 item_name/specification이 서버에서 재계산됩니다.",
+     *   tags={"Material"},
+     *   security={{"ApiKeyAuth": {}},{"BearerAuth": {}}},
+     *   @OA\Parameter(name="id", in="path", required=true, @OA\Schema(type="integer", example=101)),
+     *   @OA\RequestBody(required=true, @OA\JsonContent(ref="#/components/schemas/MaterialUpdateRequest")),
+     *   @OA\Response(
+     *     response=200, description="자재 수정 성공",
+     *     @OA\JsonContent(
+     *       allOf={
+     *         @OA\Schema(ref="#/components/schemas/ApiResponse"),
+     *         @OA\Schema(@OA\Property(property="data", ref="#/components/schemas/Material"))
+     *       }
+     *     )
+     *   ),
+     *   @OA\Response(response=404, description="데이터 없음", @OA\JsonContent(ref="#/components/schemas/ErrorResponse")),
+     *   @OA\Response(response=422, description="검증 실패", @OA\JsonContent(ref="#/components/schemas/ErrorResponse"))
+     * )
+     */
+    public function updatePut() {}
+
+    /**
+     * @OA\Patch(
+     *   path="/api/v1/materials/{id}",
+     *   summary="자재 부분 수정",
+     *   description="자재의 일부 필드를 수정합니다. name/attributes 변경 시 item_name/specification이 서버에서 재계산됩니다.",
+     *   tags={"Material"},
+     *   security={{"ApiKeyAuth": {}},{"BearerAuth": {}}},
+     *   @OA\Parameter(name="id", in="path", required=true, @OA\Schema(type="integer", example=101)),
+     *   @OA\RequestBody(required=true, @OA\JsonContent(ref="#/components/schemas/MaterialUpdateRequest")),
+     *   @OA\Response(
+     *     response=200, description="자재 수정 성공",
+     *     @OA\JsonContent(
+     *       allOf={
+     *         @OA\Schema(ref="#/components/schemas/ApiResponse"),
+     *         @OA\Schema(@OA\Property(property="data", ref="#/components/schemas/Material"))
+     *       }
+     *     )
+     *   ),
+     *   @OA\Response(response=404, description="데이터 없음", @OA\JsonContent(ref="#/components/schemas/ErrorResponse")),
+     *   @OA\Response(response=422, description="검증 실패", @OA\JsonContent(ref="#/components/schemas/ErrorResponse"))
+     * )
+     */
+    public function updatePatch() {}
+
+    /**
+     * @OA\Delete(
+     *   path="/api/v1/materials/{id}",
+     *   summary="자재 삭제",
+     *   description="자재를 소프트 삭제합니다.",
+     *   tags={"Material"},
+     *   security={{"ApiKeyAuth": {}},{"BearerAuth": {}}},
+     *   @OA\Parameter(name="id", in="path", required=true, @OA\Schema(type="integer", example=101)),
+     *   @OA\Response(response=200, description="자재 삭제 성공", @OA\JsonContent(ref="#/components/schemas/ApiResponse")),
+     *   @OA\Response(response=404, description="데이터 없음", @OA\JsonContent(ref="#/components/schemas/ErrorResponse"))
+     * )
+     */
+    public function destroy() {}
+}
diff --git a/database/migrations/2025_08_21_000100_create_materials_table.php b/database/migrations/2025_08_21_000100_create_materials_table.php
new file mode 100644
index 0000000..ff10f3a
--- /dev/null
+++ b/database/migrations/2025_08_21_000100_create_materials_table.php
@@ -0,0 +1,49 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Support\Facades\DB;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('materials', function (Blueprint $table) {
+            // category_id
+            if (!Schema::hasColumn('materials', 'category_id')) {
+                $table->unsignedBigInteger('category_id')
+                    ->nullable()
+                    ->after('tenant_id')
+                    ->comment('카테고리 ID')
+                    ->index();
+            }
+
+            // item_name
+            if (!Schema::hasColumn('materials', 'item_name')) {
+                $table->string('item_name', 255)
+                    ->nullable()
+                    ->after('name')
+                    ->comment('품목명 (자재명+규격정보)');
+            }
+        });
+
+        // 필요 시 FK RAW SQL로 추가(선택)
+        // try {
+        //     DB::statement('ALTER TABLE materials
+        //         ADD CONSTRAINT materials_category_id_foreign
+        //         FOREIGN KEY (category_id) REFERENCES categories(id)
+        //         ON DELETE SET NULL');
+        // } catch (\Throwable $e) {}
+    }
+
+    public function down(): void
+    {
+        // FK 제거 시도
+        try { DB::statement('ALTER TABLE materials DROP FOREIGN KEY materials_category_id_foreign'); } catch (\Throwable $e) {}
+
+        // 컬럼 제거
+        try { DB::statement('ALTER TABLE materials DROP COLUMN category_id'); } catch (\Throwable $e) {}
+        try { DB::statement('ALTER TABLE materials DROP COLUMN item_name'); } catch (\Throwable $e) {}
+    }
+};