diff --git a/runtime.lock.json b/runtime.lock.json
index 0bd8b72d..639b8e59 100644
--- a/runtime.lock.json
+++ b/runtime.lock.json
@@ -1,27 +1,27 @@
 {
-  "version": "0.0.28",
-  "sourceRef": "v0.0.28",
+  "version": "0.0.29",
+  "sourceRef": "v0.0.29",
   "sourceRepository": "777genius/agent_teams_orchestrator",
   "releaseRepository": "777genius/agent-teams-ai",
   "releaseTag": "v1.2.0",
   "assets": {
     "darwin-arm64": {
-      "file": "agent-teams-runtime-darwin-arm64-v0.0.28.tar.gz",
+      "file": "agent-teams-runtime-darwin-arm64-v0.0.29.tar.gz",
       "archiveKind": "tar.gz",
       "binaryName": "claude-multimodel"
     },
     "darwin-x64": {
-      "file": "agent-teams-runtime-darwin-x64-v0.0.28.tar.gz",
+      "file": "agent-teams-runtime-darwin-x64-v0.0.29.tar.gz",
       "archiveKind": "tar.gz",
       "binaryName": "claude-multimodel"
     },
     "linux-x64": {
-      "file": "agent-teams-runtime-linux-x64-v0.0.28.tar.gz",
+      "file": "agent-teams-runtime-linux-x64-v0.0.29.tar.gz",
       "archiveKind": "tar.gz",
       "binaryName": "claude-multimodel"
     },
     "win32-x64": {
-      "file": "agent-teams-runtime-win32-x64-v0.0.28.zip",
+      "file": "agent-teams-runtime-win32-x64-v0.0.29.zip",
       "archiveKind": "zip",
       "binaryName": "claude-multimodel.exe"
     }
diff --git a/src/main/services/runtime/providerRuntimeEnv.test.ts b/src/main/services/runtime/providerRuntimeEnv.test.ts
new file mode 100644
index 00000000..f3cf4444
--- /dev/null
+++ b/src/main/services/runtime/providerRuntimeEnv.test.ts
@@ -0,0 +1,50 @@
+import { describe, expect, it } from 'vitest';
+
+import { applyProviderRuntimeEnv } from './providerRuntimeEnv';
+
+describe('applyProviderRuntimeEnv', () => {
+  it('preserves Bedrock as an Anthropic runtime backend', () => {
+    const env: NodeJS.ProcessEnv = {
+      CLAUDE_CODE_USE_BEDROCK: '1',
+      AWS_PROFILE: 'cc',
+      AWS_REGION: 'us-east-1',
+    };
+
+    applyProviderRuntimeEnv(env, 'anthropic');
+
+    expect(env.CLAUDE_CODE_PROVIDER_MANAGED_BY_HOST).toBe('1');
+    expect(env.CLAUDE_CODE_ENTRY_PROVIDER).toBe('bedrock');
+    expect(env.CLAUDE_CODE_USE_BEDROCK).toBe('1');
+    expect(env.CLAUDE_CODE_USE_VERTEX).toBeUndefined();
+    expect(env.CLAUDE_CODE_USE_FOUNDRY).toBeUndefined();
+    expect(env.AWS_PROFILE).toBe('cc');
+    expect(env.AWS_REGION).toBe('us-east-1');
+  });
+
+  it('preserves Vertex as an Anthropic runtime backend', () => {
+    const env: NodeJS.ProcessEnv = {
+      CLAUDE_CODE_USE_VERTEX: 'true',
+      GOOGLE_CLOUD_PROJECT: 'project-1',
+    };
+
+    applyProviderRuntimeEnv(env, 'anthropic');
+
+    expect(env.CLAUDE_CODE_ENTRY_PROVIDER).toBe('vertex');
+    expect(env.CLAUDE_CODE_USE_VERTEX).toBe('1');
+    expect(env.CLAUDE_CODE_USE_BEDROCK).toBeUndefined();
+    expect(env.GOOGLE_CLOUD_PROJECT).toBe('project-1');
+  });
+
+  it('still strips Anthropic backend routing when Codex is selected', () => {
+    const env: NodeJS.ProcessEnv = {
+      CLAUDE_CODE_USE_BEDROCK: '1',
+      AWS_PROFILE: 'cc',
+    };
+
+    applyProviderRuntimeEnv(env, 'codex');
+
+    expect(env.CLAUDE_CODE_ENTRY_PROVIDER).toBe('codex');
+    expect(env.CLAUDE_CODE_USE_BEDROCK).toBeUndefined();
+    expect(env.AWS_PROFILE).toBe('cc');
+  });
+});
diff --git a/src/main/services/runtime/providerRuntimeEnv.ts b/src/main/services/runtime/providerRuntimeEnv.ts
index f16d6559..d21078b3 100644
--- a/src/main/services/runtime/providerRuntimeEnv.ts
+++ b/src/main/services/runtime/providerRuntimeEnv.ts
@@ -4,6 +4,8 @@ import type { CliProviderId, TeamProviderId } from '@shared/types';
 
 type RuntimeEnvProviderId = CliProviderId | TeamProviderId;
 
+type AnthropicRuntimeBackendProviderId = 'anthropic' | 'bedrock' | 'vertex' | 'foundry';
+
 const PROVIDER_ROUTING_ENV_KEYS = [
   'CLAUDE_CODE_PROVIDER_MANAGED_BY_HOST',
   'CLAUDE_CODE_ENTRY_PROVIDER',
@@ -32,11 +34,46 @@ export function applyConfiguredRuntimeBackendsEnv(
   return env;
 }
 
+function isTruthyEnvValue(value: string | undefined): boolean {
+  const normalized = value?.trim().toLowerCase();
+  return Boolean(normalized && normalized !== '0' && normalized !== 'false' && normalized !== 'no');
+}
+
+function resolveAnthropicRuntimeBackendFromEnv(
+  env: NodeJS.ProcessEnv
+): AnthropicRuntimeBackendProviderId {
+  if (isTruthyEnvValue(env.CLAUDE_CODE_USE_BEDROCK)) {
+    return 'bedrock';
+  }
+  if (isTruthyEnvValue(env.CLAUDE_CODE_USE_VERTEX)) {
+    return 'vertex';
+  }
+  if (isTruthyEnvValue(env.CLAUDE_CODE_USE_FOUNDRY)) {
+    return 'foundry';
+  }
+  return 'anthropic';
+}
+
+function applyAnthropicRuntimeBackendEnv(
+  env: NodeJS.ProcessEnv,
+  backend: AnthropicRuntimeBackendProviderId
+): void {
+  if (backend === 'bedrock') {
+    env.CLAUDE_CODE_USE_BEDROCK = '1';
+  } else if (backend === 'vertex') {
+    env.CLAUDE_CODE_USE_VERTEX = '1';
+  } else if (backend === 'foundry') {
+    env.CLAUDE_CODE_USE_FOUNDRY = '1';
+  }
+}
+
 export function applyProviderRuntimeEnv(
   env: NodeJS.ProcessEnv,
   providerId: RuntimeEnvProviderId | undefined
 ): NodeJS.ProcessEnv {
   const resolvedProvider = resolveRuntimeProviderId(providerId);
+  const anthropicBackend =
+    resolvedProvider === 'anthropic' ? resolveAnthropicRuntimeBackendFromEnv(env) : 'anthropic';
 
   for (const key of PROVIDER_ROUTING_ENV_KEYS) {
     env[key] = undefined;
@@ -48,7 +85,9 @@ export function applyProviderRuntimeEnv(
   // host-managed and set the exact entry provider so anthropic teammates do not
   // silently fall back into the host's current routing world.
   env.CLAUDE_CODE_PROVIDER_MANAGED_BY_HOST = '1';
-  env.CLAUDE_CODE_ENTRY_PROVIDER = resolvedProvider;
+  env.CLAUDE_CODE_ENTRY_PROVIDER =
+    resolvedProvider === 'anthropic' ? anthropicBackend : resolvedProvider;
+  applyAnthropicRuntimeBackendEnv(env, anthropicBackend);
 
   return env;
 }