fix(agents): sessions_spawn inherits provider (#528)

CHANGELOG.md

@@ -22,6 +22,7 @@
 - Models/Auth: add MiniMax Anthropic-compatible API onboarding (minimax-api). (#590) — thanks @mneves75
 - Models: centralize model override validation + hooks Gmail warnings in doctor. (#602) — thanks @steipete
 - Agents: avoid base-to-string error stringification in model fallback. (#604) — thanks @steipete
+- Agents: `sessions_spawn` inherits the requester's provider for child runs (avoid WhatsApp fallback). (#528) — thanks @rlmestre
 - Agents: treat billing/insufficient-credits errors as failover-worthy so model fallbacks kick in. (#486) — thanks @steipete
 - Auth: default billing disable backoff to 5h (doubling, 24h cap) and surface disabled/cooldown profiles in `models list` + doctor. (#486) — thanks @steipete
 - Commands: harden slash command registry and list text-only commands in `/commands`.

src/agents/clawdbot-tools.subagents.test.ts

@@ -57,6 +57,7 @@ describe("subagents", () => {
         const params = request.params as {
           message?: string;
           sessionKey?: string;
+          provider?: string;
           timeout?: number;
         };
         const message = params?.message ?? "";
@@ -67,6 +68,7 @@ describe("subagents", () => {
           childRunId = runId;
           childSessionKey = sessionKey;
           sessionLastAssistantText.set(sessionKey, "result");
+          expect(params?.provider).toBe("discord");
           expect(params?.timeout).toBe(1);
         }
         return {
@@ -155,10 +157,16 @@ describe("subagents", () => {
     const agentCalls = calls.filter((call) => call.method === "agent");
     expect(agentCalls).toHaveLength(2);
     const first = agentCalls[0]?.params as
-      | { lane?: string; deliver?: boolean; sessionKey?: string }
+      | {
+          lane?: string;
+          deliver?: boolean;
+          sessionKey?: string;
+          provider?: string;
+        }
       | undefined;
     expect(first?.lane).toBe("subagent");
     expect(first?.deliver).toBe(false);
+    expect(first?.provider).toBe("discord");
     expect(first?.sessionKey?.startsWith("agent:main:subagent:")).toBe(true);
     expect(childSessionKey?.startsWith("agent:main:subagent:")).toBe(true);
 

src/agents/tools/sessions-spawn-tool.ts

@@ -170,6 +170,7 @@ export function createSessionsSpawnTool(opts?: {
           params: {
             message: task,
             sessionKey: childSessionKey,
+            provider: opts?.agentProvider,
             idempotencyKey: childIdem,
             deliver: false,
             lane: "subagent",