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fix: throw redefined error on agent fetching failure #708

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merged 1 commit into from
Nov 20, 2025
Merged

fix: throw redefined error on agent fetching failure #708

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31 changes: 21 additions & 10 deletions integrations/langgraph/typescript/src/agent.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -1016,20 +1016,31 @@ export class LangGraphAgent extends AbstractAgent {
}

async getAssistant(): Promise<Assistant> {
const assistants = await this.client.assistants.search();
const retrievedAssistant = assistants.find(
(searchResult) => searchResult.graph_id === this.graphId,
);
if (!retrievedAssistant) {
console.error(`
try {
const assistants = await this.client.assistants.search();
const retrievedAssistant = assistants.find(
(searchResult) => searchResult.graph_id === this.graphId,
);
if (!retrievedAssistant) {
const notFoundMessage = `
No agent found with graph ID ${this.graphId} found..\n

These are the available agents: [${assistants.map((a) => `${a.graph_id} (ID: ${a.assistant_id})`).join(", ")}]
`);
throw new Error("No agent id found");
}
`
console.error(notFoundMessage);
throw new Error(notFoundMessage);
}

return retrievedAssistant;
return retrievedAssistant;
} catch (error) {
const redefinedError = new Error(`Failed to retrieve assistant: ${(error as Error).message}`)
this.dispatchEvent({
type: EventType.RUN_ERROR,
message: redefinedError.message,
});
this.subscriber.error()
throw redefinedError;
}
}

async getSchemaKeys(): Promise<SchemaKeys> {
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