diff --git a/gitnexus/src/core/ingestion/call-processor.ts b/gitnexus/src/core/ingestion/call-processor.ts
index 9b6dfc3f4..98f8a8b11 100644
--- a/gitnexus/src/core/ingestion/call-processor.ts
+++ b/gitnexus/src/core/ingestion/call-processor.ts
@@ -3,7 +3,7 @@ import { ASTCache } from './ast-cache.js';
 import { SymbolTable } from './symbol-table.js';
 import { ImportMap } from './import-processor.js';
 import Parser from 'tree-sitter';
-import { loadParser, loadLanguage } from '../tree-sitter/parser-loader.js';
+import { isLanguageAvailable, loadParser, loadLanguage } from '../tree-sitter/parser-loader.js';
 import { LANGUAGE_QUERIES } from './tree-sitter-queries.js';
 import { generateId } from '../../lib/utils.js';
 import { getLanguageFromFilename, yieldToEventLoop } from './utils.js';
@@ -159,6 +159,7 @@ export const processCalls = async (
     // 1. Check language support first
     const language = getLanguageFromFilename(file.path);
     if (!language) continue;
+    if (!isLanguageAvailable(language)) continue;
 
     const queryStr = LANGUAGE_QUERIES[language];
     if (!queryStr) continue;
diff --git a/gitnexus/src/core/ingestion/heritage-processor.ts b/gitnexus/src/core/ingestion/heritage-processor.ts
index dbb7bac8c..2bd092f0a 100644
--- a/gitnexus/src/core/ingestion/heritage-processor.ts
+++ b/gitnexus/src/core/ingestion/heritage-processor.ts
@@ -10,7 +10,7 @@ import { KnowledgeGraph } from '../graph/types.js';
 import { ASTCache } from './ast-cache.js';
 import { SymbolTable } from './symbol-table.js';
 import Parser from 'tree-sitter';
-import { loadParser, loadLanguage } from '../tree-sitter/parser-loader.js';
+import { isLanguageAvailable, loadParser, loadLanguage } from '../tree-sitter/parser-loader.js';
 import { LANGUAGE_QUERIES } from './tree-sitter-queries.js';
 import { generateId } from '../../lib/utils.js';
 import { getLanguageFromFilename, yieldToEventLoop } from './utils.js';
@@ -33,6 +33,7 @@ export const processHeritage = async (
     // 1. Check language support
     const language = getLanguageFromFilename(file.path);
     if (!language) continue;
+    if (!isLanguageAvailable(language)) continue;
 
     const queryStr = LANGUAGE_QUERIES[language];
     if (!queryStr) continue;
diff --git a/gitnexus/src/core/ingestion/import-processor.ts b/gitnexus/src/core/ingestion/import-processor.ts
index 990f968af..494639540 100644
--- a/gitnexus/src/core/ingestion/import-processor.ts
+++ b/gitnexus/src/core/ingestion/import-processor.ts
@@ -3,7 +3,7 @@ import path from 'path';
 import { KnowledgeGraph } from '../graph/types.js';
 import { ASTCache } from './ast-cache.js';
 import Parser from 'tree-sitter';
-import { loadParser, loadLanguage } from '../tree-sitter/parser-loader.js';
+import { isLanguageAvailable, loadParser, loadLanguage } from '../tree-sitter/parser-loader.js';
 import { LANGUAGE_QUERIES } from './tree-sitter-queries.js';
 import { generateId } from '../../lib/utils.js';
 import { getLanguageFromFilename, yieldToEventLoop } from './utils.js';
@@ -781,6 +781,7 @@ export const processImports = async (
     // 1. Check language support first
     const language = getLanguageFromFilename(file.path);
     if (!language) continue;
+    if (!isLanguageAvailable(language)) continue;
 
     const queryStr = LANGUAGE_QUERIES[language];
     if (!queryStr) continue;
diff --git a/gitnexus/test/unit/sequential-language-availability.test.ts b/gitnexus/test/unit/sequential-language-availability.test.ts
new file mode 100644
index 000000000..265851400
--- /dev/null
+++ b/gitnexus/test/unit/sequential-language-availability.test.ts
@@ -0,0 +1,68 @@
+import { describe, expect, it, vi, beforeEach } from 'vitest';
+
+vi.mock('../../src/core/tree-sitter/parser-loader.js', () => ({
+  loadParser: vi.fn(async () => ({
+    parse: vi.fn(),
+    getLanguage: vi.fn(),
+  })),
+  loadLanguage: vi.fn(async () => undefined),
+  isLanguageAvailable: vi.fn(() => true),
+}));
+
+import { createKnowledgeGraph } from '../../src/core/graph/graph.js';
+import { createASTCache } from '../../src/core/ingestion/ast-cache.js';
+import { createImportMap, processImports } from '../../src/core/ingestion/import-processor.js';
+import { processCalls } from '../../src/core/ingestion/call-processor.js';
+import { processHeritage } from '../../src/core/ingestion/heritage-processor.js';
+import { createSymbolTable } from '../../src/core/ingestion/symbol-table.js';
+import * as parserLoader from '../../src/core/tree-sitter/parser-loader.js';
+
+
+describe('sequential native parser availability', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it('skips Swift files in processImports when the native parser is unavailable', async () => {
+    vi.mocked(parserLoader.isLanguageAvailable).mockReturnValue(false);
+
+    await expect(processImports(
+      createKnowledgeGraph(),
+      [{ path: 'App.swift', content: 'import Foundation' }],
+      createASTCache(),
+      createImportMap(),
+      undefined,
+      '/tmp/repo',
+      ['App.swift'],
+    )).resolves.toBeUndefined();
+
+    expect(parserLoader.loadLanguage).not.toHaveBeenCalled();
+  });
+
+  it('skips Swift files in processCalls when the native parser is unavailable', async () => {
+    vi.mocked(parserLoader.isLanguageAvailable).mockReturnValue(false);
+
+    await expect(processCalls(
+      createKnowledgeGraph(),
+      [{ path: 'App.swift', content: 'func demo() {}' }],
+      createASTCache(),
+      createSymbolTable(),
+      createImportMap(),
+    )).resolves.toBeUndefined();
+
+    expect(parserLoader.loadLanguage).not.toHaveBeenCalled();
+  });
+
+  it('skips Swift files in processHeritage when the native parser is unavailable', async () => {
+    vi.mocked(parserLoader.isLanguageAvailable).mockReturnValue(false);
+
+    await expect(processHeritage(
+      createKnowledgeGraph(),
+      [{ path: 'App.swift', content: 'class AppViewController: UIViewController {}' }],
+      createASTCache(),
+      createSymbolTable(),
+    )).resolves.toBeUndefined();
+
+    expect(parserLoader.loadLanguage).not.toHaveBeenCalled();
+  });
+});