diff --git a/apps/api/src/modules/data-source/source-access.ts b/apps/api/src/modules/data-source/source-access.ts
index 19ebc50..5556e5b 100644
--- a/apps/api/src/modules/data-source/source-access.ts
+++ b/apps/api/src/modules/data-source/source-access.ts
@@ -97,7 +97,11 @@ export function scopedDataSourceForRead(
   policy: DataSourceAccessPolicy
 ): DataSourceRecord | null {
   if (!canReadDataSource(source, policy)) return null;
-  return source;
+  if (!policy.allowedTableIds) return source;
+  return {
+    ...source,
+    tables: source.tables.filter(table => canReadDataSourceTable(source, table, policy))
+  };
 }
 
 export function scopedDataSourcesForRead(
diff --git a/apps/api/src/modules/data-source/source-table-rows.ts b/apps/api/src/modules/data-source/source-table-rows.ts
index c06f84a..aec5e6b 100644
--- a/apps/api/src/modules/data-source/source-table-rows.ts
+++ b/apps/api/src/modules/data-source/source-table-rows.ts
@@ -18,7 +18,7 @@ import {
 } from './live-sql-query-engine.js';
 import { quoteSqlIdentifierForType } from './sql-dialect.js';
 import type { SqlQueryCell, SqlQueryEngineResult, SqlQueryResult } from './sql-query-types.js';
-import type { DataSourceAccessPolicy } from './source-access.js';
+import { canReadDataSourceTable, type DataSourceAccessPolicy } from './source-access.js';
 import {
   type ApiRuntimeStateOptions,
   isApiDataSource,
@@ -53,12 +53,14 @@ export async function readDataSourceTableRows(
   const source = findDataSource(dataSourceId);
   const table = findTableInDataSource(dataSourceId, tableIdOrName)?.table;
   if (!source || !table) return { ok: false, statusCode: 404, error: 'Table not found in data source' };
+  if (options.access && !canReadDataSourceTable(source, table, options.access)) {
+    return { ok: false, statusCode: 403, error: 'Data source table access is denied' };
+  }
 
   const pagination = normalizeTablePagination(options, 1000);
   const readMaxLimit = Math.max(options.maxLimit ?? pagination.readLimit, pagination.readLimit);
   const selectedFields = selectedTableFields(table, options.selectFields);
   const query = `select ${selectClauseForFields(selectedFields, source.type)} from ${quoteSqlIdentifierForType(table.name, source.type)}`;
-  void options.access;
   if (isSqlModelTable(table) && isLiveSqlDataSource(source)) {
     const result = await executeSqlModelTableQuery({
       source,
diff --git a/tests/smoke/table-scope-access.test.ts b/tests/smoke/table-scope-access.test.ts
new file mode 100644
index 0000000..0a8bde9
--- /dev/null
+++ b/tests/smoke/table-scope-access.test.ts
@@ -0,0 +1,91 @@
+import { afterEach, describe, expect, it } from 'vitest';
+import {
+  buildDataSource,
+  dataSources,
+  type DataSourceRecord
+} from '../../apps/api/src/modules/data-source/foundation-store.js';
+import { readDataSourceFieldOptions } from '../../apps/api/src/modules/data-source/data-source-field-options.js';
+import { readDataSourceTableRows } from '../../apps/api/src/modules/data-source/source-table-rows.js';
+import { getSqlEditorSchema } from '../../apps/api/src/modules/sql-chart/sql-editor-service.js';
+import type { DataSourceAccessPolicy } from '../../apps/api/src/modules/data-source/source-access.js';
+
+describe('table-scoped data source access', () => {
+  afterEach(() => {
+    const index = dataSources.findIndex(source => source.id === 'table-scope-source');
+    if (index >= 0) dataSources.splice(index, 1);
+  });
+
+  it('filters SQL editor schema tables to allowedTableIds', () => {
+    dataSources.push(tableScopedSource());
+
+    const result = getSqlEditorSchema('table-scope-source', tableScopePolicy());
+
+    expect(result.ok).toBe(true);
+    if (!result.ok) return;
+    expect(result.data.tables.map(table => table.name)).toEqual(['allowed_table']);
+  });
+
+  it('blocks field option reads for tables outside allowedTableIds', async () => {
+    dataSources.push(tableScopedSource());
+
+    const result = await readDataSourceFieldOptions(
+      'table-scope-source',
+      { tableName: 'hidden_table', fieldName: 'secret', limit: 10 },
+      null,
+      tableScopePolicy()
+    );
+
+    expect(result.ok).toBe(false);
+    if (result.ok) return;
+    expect(result.statusCode).toBe(404);
+  });
+
+  it('blocks row reads for tables outside allowedTableIds', async () => {
+    dataSources.push(tableScopedSource());
+
+    const result = await readDataSourceTableRows('table-scope-source', 'hidden_table', {
+      access: tableScopePolicy()
+    });
+
+    expect(result.ok).toBe(false);
+    if (result.ok) return;
+    expect(result.statusCode).toBe(403);
+  });
+});
+
+function tableScopePolicy(): DataSourceAccessPolicy {
+  return {
+    allowUnscopedAccess: true,
+    allowedTableIds: new Set(['allowed_table']),
+    showSampleDataSources: true
+  };
+}
+
+function tableScopedSource(): DataSourceRecord {
+  return buildDataSource({
+    id: 'table-scope-source',
+    name: 'Table Scope Source',
+    type: 'sample',
+    sourceType: 'source',
+    status: 'connected',
+    isSample: true,
+    isGloballyVisible: true,
+    config: {},
+    settings: {},
+    dictionary: {},
+    tables: [
+      {
+        id: 'allowed_table',
+        name: 'allowed_table',
+        fields: [{ name: 'id', type: 'number' }],
+        sampleRows: [{ id: 1 }]
+      },
+      {
+        id: 'hidden_table',
+        name: 'hidden_table',
+        fields: [{ name: 'secret', type: 'string' }],
+        sampleRows: [{ secret: 'leaked' }]
+      }
+    ]
+  });
+}