Allow fetching id within constructor

sdks/ts/packages/golem-ts-sdk/src/baseAgent.ts

@@ -18,6 +18,7 @@ import { AgentTypeRegistry } from './internal/registry/agentTypeRegistry';
 import { AgentClassName } from './agentClassName';
 import { Datetime } from 'golem:rpc/types@0.2.2';
 import { Uuid } from 'golem:agent/host';
+import { getAgentId } from './internal/registry/agentId';
 
 /**
  * BaseAgent is the foundational class for defining agent implementations.
@@ -51,10 +52,16 @@ export class BaseAgent {
    * @throws Will throw if accessed before the agent is initialized.
    */
   getId(): AgentId {
-    throw new Error(
-      `AgentId is not available for \`${this.constructor.name}\`. ` +
-        `Ensure the class is decorated with @agent()`,
-    );
+    const agentId = getAgentId();
+
+    if (!agentId) {
+      throw new Error(
+        `AgentId is not available for \`${this.constructor.name}\`. ` +
+          `Ensure the class is decorated with @agent()`,
+      );
+    }
+
+    return agentId;
   }
 
   /**

sdks/ts/packages/golem-ts-sdk/src/decorators/agent.ts

@@ -341,6 +341,7 @@ export function agent(options?: AgentDecoratorOptions) {
         const instance = new ctor(...deserializedConstructorArgs.val);
 
         const agentId = getRawSelfAgentId();
+
         if (!agentId.value.startsWith(agentTypeName.asWit)) {
           const error = createCustomError(
             `Expected the container name in which the agent is initiated to start with "${agentTypeName.asWit}", got "${agentId.value}"`,

sdks/ts/packages/golem-ts-sdk/src/index.ts

@@ -20,6 +20,7 @@ import { AgentTypeRegistry } from './internal/registry/agentTypeRegistry';
 import { AgentInitiatorRegistry } from './internal/registry/agentInitiatorRegistry';
 import { getRawSelfAgentId } from './host/hostapi';
 import { AgentInitiator } from './internal/agentInitiator';
+import { setAgentId } from './internal/registry/agentId';
 
 export { BaseAgent } from './baseAgent';
 export { AgentId } from './agentId';
@@ -68,6 +69,8 @@ async function initialize(
     );
   }
 
+  setAgentId(getRawSelfAgentId());
+
   const initiateResult = initiator.initiate(input, principal);
 
   if (initiateResult.tag === 'ok') {

sdks/ts/packages/golem-ts-sdk/src/internal/registry/agentId.ts

@@ -0,0 +1,25 @@
+// Copyright 2024-2025 Golem Cloud
+//
+// Licensed under the Golem Source License v1.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://license.golem.cloud/LICENSE
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import { AgentId } from '../../agentId';
+
+let agentId: AgentId | null = null;
+
+export function setAgentId(id: AgentId): void {
+  agentId = id;
+}
+
+export function getAgentId(): AgentId | null {
+  return agentId;
+}