Show in-progress tool calls

server/tests/chat-tools-streaming.test.ts

@@ -140,3 +140,69 @@ test("plain Chat Completions stream does not send Sybil-managed tools", async ()
   );
   assert.equal(events.at(-1)?.type === "done" ? events.at(-1)?.result.text : null, "Hi");
 });
+
+test("OpenAI-compatible Chat Completions stream emits initiated and terminal tool call updates", async () => {
+  let requestCount = 0;
+  const client = {
+    chat: {
+      completions: {
+        create: async () => {
+          requestCount += 1;
+          if (requestCount === 1) {
+            return streamFrom([
+              {
+                choices: [
+                  {
+                    delta: {
+                      tool_calls: [
+                        {
+                          index: 0,
+                          id: "call_1",
+                          function: {
+                            name: "unknown_tool",
+                            arguments: "{\"query\":\"current weather\"}",
+                          },
+                        },
+                      ],
+                    },
+                    finish_reason: "tool_calls",
+                  },
+                ],
+              },
+            ]);
+          }
+
+          return streamFrom([
+            { choices: [{ delta: { content: "Done" } }] },
+            { choices: [{ delta: {}, finish_reason: "stop" }] },
+          ]);
+        },
+      },
+    },
+  };
+
+  const events = await collectEvents(
+    runToolAwareChatCompletionsStream({
+      client: client as any,
+      model: "grok-test",
+      messages: [{ role: "user", content: "Use a tool" }],
+    })
+  );
+
+  assert.deepEqual(
+    events.map((event) => event.type),
+    ["tool_call", "tool_call", "delta", "done"]
+  );
+
+  const toolEvents = events.flatMap((event) => (event.type === "tool_call" ? [event.event] : []));
+  assert.equal(toolEvents[0]?.toolCallId, "call_1");
+  assert.equal(toolEvents[0]?.status, "initiated");
+  assert.equal(toolEvents[0]?.completedAt, undefined);
+  assert.equal(toolEvents[0]?.durationMs, undefined);
+  assert.equal(toolEvents[1]?.toolCallId, "call_1");
+  assert.equal(toolEvents[1]?.status, "failed");
+  assert.match(toolEvents[1]?.error ?? "", /Unknown tool: unknown_tool/);
+  assert.equal(typeof toolEvents[1]?.completedAt, "string");
+  assert.equal(typeof toolEvents[1]?.durationMs, "number");
+  assert.equal(events.at(-1)?.type === "done" ? events.at(-1)?.result.text : null, "Done");
+});