diff --git a/enable_gpi_schema.sql b/enable_gpi_schema.sql
new file mode 100644
index 0000000..b94aeb7
--- /dev/null
+++ b/enable_gpi_schema.sql
@@ -0,0 +1,13 @@
+-- Habilitar schema gpi na PostgREST API
+-- As permissões abaixo são suficientes para a PostgREST expor o schema
+
+-- Permissões
+GRANT USAGE ON SCHEMA gpi TO postgres, anon, authenticated, service_role;
+
+-- Grant em todas as tabelas existentes do schema gpi
+GRANT ALL ON ALL TABLES IN SCHEMA gpi TO postgres, anon, authenticated, service_role;
+
+-- Grant em sequências
+GRANT USAGE, SELECT ON ALL SEQUENCES IN SCHEMA gpi TO postgres, anon, authenticated, service_role;
+
+SELECT 'Schema gpi habilitado na PostgREST API!' AS result;
\ No newline at end of file
diff --git a/src/server/config/database.ts b/src/server/config/database.ts
index cb29827..a8b933f 100644
--- a/src/server/config/database.ts
+++ b/src/server/config/database.ts
@@ -9,7 +9,7 @@ export const connectDB = async () => {
             throw error;
         }
         
-        console.log('✅ Conectado ao Supabase (schema: public)');
+        console.log('✅ Conectado ao Supabase (schema: gpi)');
     } catch (error) {
         console.error('❌ Erro de conexão:', error);
     }
diff --git a/src/server/config/supabase.ts b/src/server/config/supabase.ts
index d5ad8cb..7f922b5 100644
--- a/src/server/config/supabase.ts
+++ b/src/server/config/supabase.ts
@@ -9,15 +9,16 @@ if (!supabaseServiceKey) {
   throw new Error('❌ SUPABASE_SERVICE_ROLE_KEY is missing in environment variables');
 }
 
+export const GPI_SCHEMA = 'gpi';
+
 export const supabase = createClient(supabaseUrl, supabaseServiceKey, {
+  db: { schema: GPI_SCHEMA },
   auth: {
     autoRefreshToken: false,
     persistSession: false
   }
 });
 
-export const GPI_SCHEMA = 'public';
-
 export async function queryGpi(table: string, query?: any) {
   let dbQuery = supabase.from(table).select('*');
   
diff --git a/supabase_gpi_schema.sql b/supabase_gpi_schema.sql
new file mode 100644
index 0000000..400e9f1
--- /dev/null
+++ b/supabase_gpi_schema.sql
@@ -0,0 +1,269 @@
+-- Criar schema gpi
+CREATE SCHEMA IF NOT EXISTS gpi;
+
+-- Tabela users (já existe em public, mas replicamos em gpi)
+CREATE TABLE IF NOT EXISTS gpi.users (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    logto_id TEXT UNIQUE,
+    email TEXT NOT NULL,
+    name TEXT,
+    role TEXT DEFAULT 'user',
+    is_banned BOOLEAN DEFAULT false,
+    last_seen_at TIMESTAMPTZ,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Tabela projects
+CREATE TABLE IF NOT EXISTS gpi.projects (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    name TEXT NOT NULL,
+    client TEXT,
+    start_date DATE,
+    end_date DATE,
+    environment TEXT,
+    technician TEXT,
+    weight_kg DECIMAL(10,2),
+    painted_weight DECIMAL(10,2),
+    created_by TEXT,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Tabela parts
+CREATE TABLE IF NOT EXISTS gpi.parts (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    project_id UUID REFERENCES gpi/projects(id) ON DELETE CASCADE,
+    description TEXT,
+    dimensions TEXT,
+    weight DECIMAL(10,3),
+    type TEXT,
+    area DECIMAL(10,3),
+    complexity INTEGER DEFAULT 1,
+    quantity INTEGER NOT NULL DEFAULT 1,
+    notes TEXT,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Tabela painting_schemes
+CREATE TABLE IF NOT EXISTS gpi.painting_schemes (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    project_id UUID REFERENCES gpi/projects(id) ON DELETE CASCADE,
+    name TEXT NOT NULL,
+    type TEXT,
+    coat TEXT,
+    solids_volume DECIMAL(5,2),
+    yield_theoretical DECIMAL(10,2),
+    eps_min DECIMAL(5,2),
+    eps_max DECIMAL(5,2),
+    dilution DECIMAL(5,2),
+    manufacturer TEXT,
+    color TEXT,
+    paint_consumption DECIMAL(10,3),
+    thinner_consumption DECIMAL(10,3),
+    paint_id TEXT,
+    thinner_id TEXT,
+    color_hex TEXT,
+    thinner_symbol TEXT,
+    notes TEXT,
+    created_by TEXT,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Tabela application_records
+CREATE TABLE IF NOT EXISTS gpi.application_records (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    project_id UUID REFERENCES gpi/projects(id) ON DELETE CASCADE,
+    coat_stage TEXT NOT NULL,
+    piece_description TEXT,
+    date DATE,
+    operator TEXT,
+    real_weight DECIMAL(10,3),
+    volume_used DECIMAL(10,3),
+    area_painted DECIMAL(10,3),
+    wet_thickness_avg DECIMAL(6,2),
+    dry_thickness_calc DECIMAL(6,2),
+    real_yield DECIMAL(10,3),
+    method TEXT,
+    diluent_used DECIMAL(10,3),
+    items JSONB,
+    notes TEXT,
+    created_by TEXT,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Tabela inspections
+CREATE TABLE IF NOT EXISTS gpi.inspections (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    project_id UUID REFERENCES gpi/projects(id) ON DELETE CASCADE,
+    application_record_id UUID REFERENCES gpi/application_records(id),
+    stock_item_id TEXT,
+    instrument_id TEXT,
+    type TEXT CHECK (type IN ('painting', 'surface_treatment')),
+    date DATE,
+    inspector TEXT,
+    part_temperature DECIMAL(6,2),
+    weight_kg DECIMAL(10,3),
+    appearance TEXT,
+    defects TEXT,
+    photos TEXT[],
+    piece_description TEXT,
+    eps_points DECIMAL(6,2)[],
+    adhesion_test TEXT,
+    batch TEXT,
+    treatment_executor TEXT,
+    treatment_type TEXT,
+    cleaning_degree TEXT,
+    roughness_readings DECIMAL(6,2)[],
+    flash_rust TEXT,
+    temperature DECIMAL(6,2),
+    relative_humidity DECIMAL(5,2),
+    period TEXT CHECK (period IN ('morning', 'afternoon', 'night')),
+    created_by TEXT,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Tabela technical_data_sheets
+CREATE TABLE IF NOT EXISTS gpi.technical_data_sheets (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    name TEXT NOT NULL,
+    manufacturer TEXT,
+    type TEXT,
+    file_url TEXT NOT NULL,
+    upload_date DATE NOT NULL,
+    solids_volume DECIMAL(5,2),
+    density DECIMAL(6,3),
+    mixing_ratio TEXT,
+    yield_theoretical DECIMAL(10,2),
+    wft_min DECIMAL(6,2),
+    wft_max DECIMAL(6,2),
+    dft_min DECIMAL(6,2),
+    dft_max DECIMAL(6,2),
+    reducer TEXT,
+    mixing_ratio_weight TEXT,
+    mixing_ratio_volume TEXT,
+    dft_reference DECIMAL(6,2),
+    yield_factor DECIMAL(5,3),
+    dilution DECIMAL(5,2),
+    notes TEXT,
+    manufacturer_code TEXT,
+    min_stock DECIMAL(10,3),
+    typical_application TEXT,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Tabela yield_studies
+CREATE TABLE IF NOT EXISTS gpi.yield_studies (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    name TEXT NOT NULL,
+    data_sheet_id TEXT NOT NULL,
+    target_dft DECIMAL(6,2) NOT NULL,
+    dilution_percent DECIMAL(5,2) NOT NULL,
+    categories JSONB NOT NULL,
+    total_weight DECIMAL(10,3),
+    estimated_paint_volume DECIMAL(10,3),
+    estimated_reducer_volume DECIMAL(10,3),
+    estimated_paint_volume_by_area DECIMAL(10,3),
+    estimated_reducer_volume_by_area DECIMAL(10,3),
+    average_complexity DECIMAL(3,1),
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Tabela instruments
+CREATE TABLE IF NOT EXISTS gpi.instruments (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    name TEXT NOT NULL,
+    type TEXT NOT NULL,
+    serial_number TEXT UNIQUE,
+    manufacturer TEXT,
+    model TEXT,
+    last_calibration DATE,
+    next_calibration DATE,
+    status TEXT DEFAULT 'active',
+    notes TEXT,
+    organization_id TEXT,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Tabela stock_items
+CREATE TABLE IF NOT EXISTS gpi.stock_items (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    name TEXT NOT NULL,
+    type TEXT NOT NULL,
+    batch_number TEXT,
+    quantity DECIMAL(10,3) DEFAULT 0,
+    unit TEXT DEFAULT 'L',
+    data_sheet_id TEXT,
+    location TEXT,
+    expiration_date DATE,
+    status TEXT DEFAULT 'available',
+    notes TEXT,
+    organization_id TEXT,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Tabela stock_movements
+CREATE TABLE IF NOT EXISTS gpi.stock_movements (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    stock_item_id UUID REFERENCES gpi/stock_items(id) ON DELETE CASCADE,
+    type TEXT NOT NULL CHECK (type IN ('in', 'out', 'adjustment')),
+    quantity DECIMAL(10,3) NOT NULL,
+    reason TEXT,
+    performed_by TEXT,
+    notes TEXT,
+    created_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Tabela notifications
+CREATE TABLE IF NOT EXISTS gpi.notifications (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    title TEXT NOT NULL,
+    message TEXT NOT NULL,
+    type TEXT DEFAULT 'info' CHECK (type IN ('info', 'warning', 'error', 'success')),
+    is_read BOOLEAN DEFAULT false,
+    is_archived BOOLEAN DEFAULT false,
+    archived_by TEXT[],
+    deleted_by TEXT[],
+    metadata JSONB,
+    created_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Tabela geometry_types
+CREATE TABLE IF NOT EXISTS gpi.geometry_types (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    name TEXT NOT NULL,
+    efficiency_loss DECIMAL(5,2),
+    updated_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Habilitar PostgREST para o schema gpi
+ALTER SCHEMA gpi ENABLE VALUE;
+GRANT USAGE ON SCHEMA gpi TO postgres, anon, authenticated, service_role;
+
+-- Grant permissions em todas as tabelas
+GRANT ALL ON TABLE gpi.users TO postgres, anon, authenticated, service_role;
+GRANT ALL ON TABLE gpi.projects TO postgres, anon, authenticated, service_role;
+GRANT ALL ON TABLE gpi.parts TO postgres, anon, authenticated, service_role;
+GRANT ALL ON TABLE gpi.painting_schemes TO postgres, anon, authenticated, service_role;
+GRANT ALL ON TABLE gpi.application_records TO postgres, anon, authenticated, service_role;
+GRANT ALL ON TABLE gpi.inspections TO postgres, anon, authenticated, service_role;
+GRANT ALL ON TABLE gpi.technical_data_sheets TO postgres, anon, authenticated, service_role;
+GRANT ALL ON TABLE gpi.yield_studies TO postgres, anon, authenticated, service_role;
+GRANT ALL ON TABLE gpi.instruments TO postgres, anon, authenticated, service_role;
+GRANT ALL ON TABLE gpi.stock_items TO postgres, anon, authenticated, service_role;
+GRANT ALL ON TABLE gpi.stock_movements TO postgres, anon, authenticated, service_role;
+GRANT ALL ON TABLE gpi.notifications TO postgres, anon, authenticated, service_role;
+GRANT ALL ON TABLE gpi.geometry_types TO postgres, anon, authenticated, service_role;
+
+-- Grant sequences
+GRANT USAGE, SELECT ON ALL SEQUENCES IN SCHEMA gpi TO postgres, anon, authenticated, service_role;
+
+SELECT 'Schema gpi criado com sucesso!' AS result;
\ No newline at end of file