fix(orchestrator): make provider-aware Claude key startup requirements

apps/orchestrator/.env.example

@@ -1,6 +1,8 @@
 # Orchestrator Configuration
 ORCHESTRATOR_PORT=3001
 NODE_ENV=development
+# AI provider for orchestrator agents: ollama, claude, openai
+AI_PROVIDER=ollama
 
 # Valkey
 VALKEY_HOST=localhost
@@ -8,6 +10,7 @@ VALKEY_PORT=6379
 VALKEY_URL=redis://localhost:6379
 
 # Claude API
+# Required only when AI_PROVIDER=claude.
 CLAUDE_API_KEY=your-api-key-here
 
 # Docker

apps/orchestrator/README.md

@@ -186,17 +186,18 @@ pnpm --filter @mosaic/orchestrator lint
 
 Environment variables loaded via `@nestjs/config`. Key variables:
 
-| Variable                         | Description                                        |
-| -------------------------------- | -------------------------------------------------- |
-| `ORCHESTRATOR_PORT`              | HTTP port (default: 3001)                          |
-| `CLAUDE_API_KEY`                 | Claude API key for agents                          |
-| `VALKEY_HOST`                    | Valkey/Redis host (default: localhost)             |
-| `VALKEY_PORT`                    | Valkey/Redis port (default: 6379)                  |
-| `COORDINATOR_URL`                | Quality Coordinator base URL                       |
-| `SANDBOX_ENABLED`                | Enable Docker sandbox (true/false)                 |
-| `MAX_CONCURRENT_AGENTS`          | Maximum concurrent in-memory sessions (default: 2) |
-| `ORCHESTRATOR_QUEUE_CONCURRENCY` | BullMQ worker concurrency (default: 1)             |
-| `SANDBOX_DEFAULT_MEMORY_MB`      | Sandbox memory limit in MB (default: 256)          |
+| Variable                         | Description                                                  |
+| -------------------------------- | ------------------------------------------------------------ |
+| `ORCHESTRATOR_PORT`              | HTTP port (default: 3001)                                    |
+| `AI_PROVIDER`                    | LLM provider for orchestrator (`ollama`, `claude`, `openai`) |
+| `CLAUDE_API_KEY`                 | Required only when `AI_PROVIDER=claude`                      |
+| `VALKEY_HOST`                    | Valkey/Redis host (default: localhost)                       |
+| `VALKEY_PORT`                    | Valkey/Redis port (default: 6379)                            |
+| `COORDINATOR_URL`                | Quality Coordinator base URL                                 |
+| `SANDBOX_ENABLED`                | Enable Docker sandbox (true/false)                           |
+| `MAX_CONCURRENT_AGENTS`          | Maximum concurrent in-memory sessions (default: 2)           |
+| `ORCHESTRATOR_QUEUE_CONCURRENCY` | BullMQ worker concurrency (default: 1)                       |
+| `SANDBOX_DEFAULT_MEMORY_MB`      | Sandbox memory limit in MB (default: 256)                    |
 
 ## Related Documentation
 

apps/orchestrator/SECURITY.md

@@ -192,7 +192,8 @@ LABEL com.mosaic.security.non-root=true
 
 Sensitive configuration is passed via environment variables:
 
-- `CLAUDE_API_KEY`: Claude API credentials
+- `AI_PROVIDER`: Orchestrator LLM provider
+- `CLAUDE_API_KEY`: Claude credentials (required only for `AI_PROVIDER=claude`)
 - `VALKEY_URL`: Cache connection string
 
 **Best Practices:**

apps/orchestrator/src/config/orchestrator.config.spec.ts

@@ -181,4 +181,30 @@ describe("orchestratorConfig", () => {
       expect(config.spawner.maxConcurrentAgents).toBe(10);
     });
   });
+
+  describe("AI provider config", () => {
+    it("should default aiProvider to ollama when unset", () => {
+      delete process.env.AI_PROVIDER;
+
+      const config = orchestratorConfig();
+
+      expect(config.aiProvider).toBe("ollama");
+    });
+
+    it("should normalize AI provider to lowercase", () => {
+      process.env.AI_PROVIDER = "  cLaUdE  ";
+
+      const config = orchestratorConfig();
+
+      expect(config.aiProvider).toBe("claude");
+    });
+
+    it("should fallback unsupported AI provider to ollama", () => {
+      process.env.AI_PROVIDER = "bad-provider";
+
+      const config = orchestratorConfig();
+
+      expect(config.aiProvider).toBe("ollama");
+    });
+  });
 });

apps/orchestrator/src/config/orchestrator.config.ts

@@ -1,4 +1,17 @@
 import { registerAs } from "@nestjs/config";
+const normalizeAiProvider = (): "ollama" | "claude" | "openai" => {
+  const provider = process.env.AI_PROVIDER?.trim().toLowerCase();
+
+  if (!provider) {
+    return "ollama";
+  }
+
+  if (provider !== "ollama" && provider !== "claude" && provider !== "openai") {
+    return "ollama";
+  }
+
+  return provider;
+};
 
 export const orchestratorConfig = registerAs("orchestrator", () => ({
   host: process.env.HOST ?? process.env.BIND_ADDRESS ?? "127.0.0.1",
@@ -14,6 +27,7 @@ export const orchestratorConfig = registerAs("orchestrator", () => ({
   claude: {
     apiKey: process.env.CLAUDE_API_KEY,
   },
+  aiProvider: normalizeAiProvider(),
   docker: {
     socketPath: process.env.DOCKER_SOCKET ?? "/var/run/docker.sock",
   },

apps/orchestrator/src/spawner/agent-spawner.service.spec.ts

@@ -12,6 +12,9 @@ describe("AgentSpawnerService", () => {
     // Create mock ConfigService
     mockConfigService = {
       get: vi.fn((key: string) => {
+        if (key === "orchestrator.aiProvider") {
+          return "ollama";
+        }
         if (key === "orchestrator.claude.apiKey") {
           return "test-api-key";
         }
@@ -31,19 +34,80 @@ describe("AgentSpawnerService", () => {
       expect(service).toBeDefined();
     });
 
-    it("should initialize with Claude API key from config", () => {
+    it("should initialize with default AI provider when API key is omitted", () => {
+      const noClaudeConfigService = {
+        get: vi.fn((key: string) => {
+          if (key === "orchestrator.aiProvider") {
+            return "ollama";
+          }
+          if (key === "orchestrator.spawner.maxConcurrentAgents") {
+            return 20;
+          }
+          if (key === "orchestrator.spawner.sessionCleanupDelayMs") {
+            return 30000;
+          }
+          return undefined;
+        }),
+      } as unknown as ConfigService;
+
+      const serviceNoKey = new AgentSpawnerService(noClaudeConfigService);
+      expect(serviceNoKey).toBeDefined();
+    });
+
+    it("should initialize with Claude provider when key is present", () => {
       expect(mockConfigService.get).toHaveBeenCalledWith("orchestrator.claude.apiKey");
     });
 
-    it("should throw error if Claude API key is missing", () => {
+    it("should initialize with CLAUDE provider when API key is present", () => {
+      const claudeConfigService = {
+        get: vi.fn((key: string) => {
+          if (key === "orchestrator.aiProvider") {
+            return "claude";
+          }
+          if (key === "orchestrator.claude.apiKey") {
+            return "test-api-key";
+          }
+          if (key === "orchestrator.spawner.maxConcurrentAgents") {
+            return 20;
+          }
+          return undefined;
+        }),
+      } as unknown as ConfigService;
+
+      const claudeService = new AgentSpawnerService(claudeConfigService);
+      expect(claudeService).toBeDefined();
+    });
+
+    it("should throw error if Claude API key is missing when provider is claude", () => {
       const badConfigService = {
-        get: vi.fn(() => undefined),
+        get: vi.fn((key: string) => {
+          if (key === "orchestrator.aiProvider") {
+            return "claude";
+          }
+          return undefined;
+        }),
       } as unknown as ConfigService;
 
       expect(() => new AgentSpawnerService(badConfigService)).toThrow(
-        "CLAUDE_API_KEY is not configured"
+        "CLAUDE_API_KEY is required when AI_PROVIDER is set to 'claude'"
       );
     });
+
+    it("should still initialize when CLAUDE_API_KEY is missing for non-Claude provider", () => {
+      const nonClaudeConfigService = {
+        get: vi.fn((key: string) => {
+          if (key === "orchestrator.aiProvider") {
+            return "ollama";
+          }
+          if (key === "orchestrator.spawner.maxConcurrentAgents") {
+            return 20;
+          }
+          return undefined;
+        }),
+      } as unknown as ConfigService;
+
+      expect(() => new AgentSpawnerService(nonClaudeConfigService)).not.toThrow();
+    });
   });
 
   describe("spawnAgent", () => {

apps/orchestrator/src/spawner/agent-spawner.service.ts

@@ -14,6 +14,8 @@ import {
  * This allows time for status queries before the session is removed
  */
 const DEFAULT_SESSION_CLEANUP_DELAY_MS = 30000; // 30 seconds
+const SUPPORTED_AI_PROVIDERS = ["ollama", "claude", "openai"] as const;
+type SupportedAiProvider = (typeof SUPPORTED_AI_PROVIDERS)[number];
 
 /**
  * Service responsible for spawning Claude agents using Anthropic SDK
@@ -21,22 +23,38 @@ const DEFAULT_SESSION_CLEANUP_DELAY_MS = 30000; // 30 seconds
 @Injectable()
 export class AgentSpawnerService implements OnModuleDestroy {
   private readonly logger = new Logger(AgentSpawnerService.name);
-  private readonly anthropic: Anthropic;
+  private readonly anthropic: Anthropic | undefined;
+  private readonly aiProvider: SupportedAiProvider;
   private readonly sessions = new Map<string, AgentSession>();
   private readonly maxConcurrentAgents: number;
   private readonly sessionCleanupDelayMs: number;
   private readonly cleanupTimers = new Map<string, NodeJS.Timeout>();
 
   constructor(private readonly configService: ConfigService) {
+    const configuredProvider = this.configService.get<string>("orchestrator.aiProvider");
+    this.aiProvider = this.normalizeAiProvider(configuredProvider);
+
+    this.logger.log(`AgentSpawnerService resolved AI provider: ${this.aiProvider}`);
+
     const apiKey = this.configService.get<string>("orchestrator.claude.apiKey");
 
-    if (!apiKey) {
-      throw new Error("CLAUDE_API_KEY is not configured");
-    }
+    if (this.aiProvider === "claude") {
+      if (!apiKey) {
+        throw new Error("CLAUDE_API_KEY is required when AI_PROVIDER is set to 'claude'");
+      }
 
-    this.anthropic = new Anthropic({
-      apiKey,
-    });
+      this.logger.log("CLAUDE_API_KEY is configured. Initializing Anthropic client.");
+      this.anthropic = new Anthropic({ apiKey });
+    } else {
+      if (apiKey) {
+        this.logger.debug(
+          `CLAUDE_API_KEY is set but ignored because AI provider is '${this.aiProvider}'`
+        );
+      } else {
+        this.logger.log(`CLAUDE_API_KEY not required for AI provider '${this.aiProvider}'.`);
+      }
+      this.anthropic = undefined;
+    }
 
     // Default to 20 if not configured
     this.maxConcurrentAgents =
@@ -48,10 +66,27 @@ export class AgentSpawnerService implements OnModuleDestroy {
       DEFAULT_SESSION_CLEANUP_DELAY_MS;
 
     this.logger.log(
-      `AgentSpawnerService initialized with Claude SDK (max concurrent agents: ${String(this.maxConcurrentAgents)}, cleanup delay: ${String(this.sessionCleanupDelayMs)}ms)`
+      `AgentSpawnerService initialized with ${this.aiProvider} AI provider (max concurrent agents: ${String(
+        this.maxConcurrentAgents
+      )}, cleanup delay: ${String(this.sessionCleanupDelayMs)}ms)`
     );
   }
 
+  private normalizeAiProvider(provider?: string): SupportedAiProvider {
+    const normalizedProvider = provider?.trim().toLowerCase();
+
+    if (!normalizedProvider) {
+      return "ollama";
+    }
+
+    if (!SUPPORTED_AI_PROVIDERS.includes(normalizedProvider as SupportedAiProvider)) {
+      this.logger.warn(`Unsupported AI provider '${normalizedProvider}'. Defaulting to 'ollama'.`);
+      return "ollama";
+    }
+
+    return normalizedProvider as SupportedAiProvider;
+  }
+
   /**
    * Clean up all pending cleanup timers on module destroy
    */