diff --git a/packages/appkit/package.json b/packages/appkit/package.json
index edd118908..161af8a60 100644
--- a/packages/appkit/package.json
+++ b/packages/appkit/package.json
@@ -84,6 +84,7 @@
     "get-port": "7.2.0",
     "js-yaml": "4.2.0",
     "magic-string": "0.30.21",
+    "mlflow-tracing": "0.1.3",
     "obug": "2.1.1",
     "pg": "8.18.0",
     "picocolors": "1.1.1",
diff --git a/packages/appkit/src/plugins/agents/agents.ts b/packages/appkit/src/plugins/agents/agents.ts
index 922f8a9b5..ac6f52bcf 100644
--- a/packages/appkit/src/plugins/agents/agents.ts
+++ b/packages/appkit/src/plugins/agents/agents.ts
@@ -50,6 +50,13 @@ import { agentStreamDefaults } from "./defaults";
 import { EventChannel } from "./event-channel";
 import { AgentEventTranslator } from "./event-translator";
 import manifest from "./manifest.json";
+import {
+  currentTraceId,
+  initAgentTracing,
+  linkTraceToRun,
+  traceAgent,
+  traceTool,
+} from "./mlflow";
 import {
   approvalRequestSchema,
   cancelRequestSchema,
@@ -128,7 +135,11 @@ interface RunState {
 }
 
 export class AgentsPlugin extends Plugin implements ToolProvider {
-  static manifest = manifest as PluginManifest;
+  // Routed through `unknown`: the optional resources have differing `fields`
+  // keys (serving `name`, experiment `experimentId`), which TS widens to an
+  // incompatible union on the JSON import. The shape is validated at runtime
+  // against the plugin-manifest schema.
+  static manifest = manifest as unknown as PluginManifest;
   static phase: PluginPhase = "deferred";
 
   protected declare config: AgentsPluginConfig;
@@ -271,6 +282,7 @@ export class AgentsPlugin extends Plugin implements ToolProvider {
   }
 
   async setup() {
+    await initAgentTracing();
     const { agents, defaultAgentName } = await this.buildAgentRegistry();
     this.agents = agents;
     this.defaultAgentName = defaultAgentName;
@@ -842,7 +854,7 @@ export class AgentsPlugin extends Plugin implements ToolProvider {
       });
       return;
     }
-    const { message, threadId, agent: agentName } = parsed.data;
+    const { message, threadId, agent: agentName, mlflowRunId } = parsed.data;
 
     const registered = this.resolveAgent(agentName);
     if (!registered) {
@@ -896,7 +908,7 @@ export class AgentsPlugin extends Plugin implements ToolProvider {
       res.status(500).json({ error: "Thread operation failed" });
       return;
     }
-    return this._streamAgent(req, res, registered, thread, userId);
+    return this._streamAgent(req, res, registered, thread, userId, mlflowRunId);
   }
 
   /**
@@ -1023,6 +1035,7 @@ export class AgentsPlugin extends Plugin implements ToolProvider {
     registered: RegisteredAgent,
     thread: Thread,
     userId: string,
+    mlflowRunId?: string,
   ): Promise<void> {
     const abortController = new AbortController();
     const signal = abortController.signal;
@@ -1068,61 +1081,90 @@ export class AgentsPlugin extends Plugin implements ToolProvider {
           outboundEvents.push(evt);
         }
 
-        const pluginNames = this.context
-          ? this.context
-              .getPluginNames()
-              .filter((n) => n !== this.name && n !== "server")
-          : [];
-        const fullPrompt = composePromptForAgent(
-          registered,
-          this.config.baseSystemPrompt,
+        // Root MLflow span for the turn; tool-call spans nest under it.
+        await traceAgent(
+          registered.name ?? "agent",
           {
-            agentName: registered.name,
-            pluginNames,
-            toolNames: tools.map((t) => t.name),
+            messages: thread.messages.map((m) => ({
+              role: m.role,
+              content: m.content,
+            })),
           },
-        );
+          async (span) => {
+            // Link this turn's trace to an eval run when the eval runner
+            // supplied one, so the trace shows under the MLflow evaluation run.
+            if (mlflowRunId) linkTraceToRun(mlflowRunId);
+
+            const pluginNames = this.context
+              ? this.context
+                  .getPluginNames()
+                  .filter((n) => n !== this.name && n !== "server")
+              : [];
+            const fullPrompt = composePromptForAgent(
+              registered,
+              this.config.baseSystemPrompt,
+              {
+                agentName: registered.name,
+                pluginNames,
+                toolNames: tools.map((t) => t.name),
+              },
+            );
 
-        const messagesWithSystem: Message[] = [
-          {
-            id: "system",
-            role: "system",
-            content: fullPrompt,
-            createdAt: new Date(),
-          },
-          ...thread.messages,
-        ];
+            const messagesWithSystem: Message[] = [
+              {
+                id: "system",
+                role: "system",
+                content: fullPrompt,
+                createdAt: new Date(),
+              },
+              ...thread.messages,
+            ];
+
+            const stream = registered.adapter.run(
+              {
+                messages: messagesWithSystem,
+                tools,
+                threadId: thread.id,
+                signal,
+              },
+              { executeTool, signal },
+            );
 
-        const stream = registered.adapter.run(
-          {
-            messages: messagesWithSystem,
-            tools,
-            threadId: thread.id,
-            signal,
-          },
-          { executeTool, signal },
-        );
+            // The accumulation rule (deltas append, `message` replaces) is
+            // shared with `runAgent` and `runSubAgent`; see
+            // `consumeAdapterStream` for the rationale.
+            const fullContent = await consumeAdapterStream(stream, {
+              signal,
+              onEvent: (event) => {
+                for (const translated of translator.translate(event)) {
+                  outboundEvents.push(translated);
+                }
+              },
+            });
+
+            if (fullContent) {
+              span.setOutputs({ role: "assistant", content: fullContent });
+              await this.threadStore.addMessage(thread.id, userId, {
+                id: randomUUID(),
+                role: "assistant",
+                content: fullContent,
+                createdAt: new Date(),
+              });
+            }
 
-        // The accumulation rule (deltas append, `message` replaces) is shared
-        // with `runAgent` and `runSubAgent`; see `consumeAdapterStream` for
-        // the rationale.
-        const fullContent = await consumeAdapterStream(stream, {
-          signal,
-          onEvent: (event) => {
-            for (const translated of translator.translate(event)) {
-              outboundEvents.push(translated);
+            // Surface the MLflow trace id so eval runs can attach assessments
+            // to this turn's trace. No-op when tracing is disabled.
+            const mlflowTraceId = currentTraceId();
+            if (mlflowTraceId) {
+              for (const evt of translator.translate({
+                type: "metadata",
+                data: { mlflowTraceId },
+              })) {
+                outboundEvents.push(evt);
+              }
             }
           },
-        });
-
-        if (fullContent) {
-          await this.threadStore.addMessage(thread.id, userId, {
-            id: randomUUID(),
-            role: "assistant",
-            content: fullContent,
-            createdAt: new Date(),
-          });
-        }
+        );
 
         for (const evt of translator.finalize()) outboundEvents.push(evt);
       } catch (error) {
@@ -1234,51 +1276,66 @@ export class AgentsPlugin extends Plugin implements ToolProvider {
 
     let fullContent = "";
     try {
-      const pluginNames = this.context
-        ? this.context
-            .getPluginNames()
-            .filter((n) => n !== this.name && n !== "server")
-        : [];
-      const fullPrompt = composePromptForAgent(
-        registered,
-        this.config.baseSystemPrompt,
+      // Root MLflow span for the turn; tool-call spans nest under it. Mirrors
+      // the streaming path so the invoke surface produces the same trace shape
+      // instead of orphan root TOOL spans.
+      await traceAgent(
+        registered.name ?? "agent",
         {
-          agentName: registered.name,
-          pluginNames,
-          toolNames: tools.map((t) => t.name),
+          messages: thread.messages.map((m) => ({
+            role: m.role,
+            content: m.content,
+          })),
         },
-      );
+        async (span) => {
+          const pluginNames = this.context
+            ? this.context
+                .getPluginNames()
+                .filter((n) => n !== this.name && n !== "server")
+            : [];
+          const fullPrompt = composePromptForAgent(
+            registered,
+            this.config.baseSystemPrompt,
+            {
+              agentName: registered.name,
+              pluginNames,
+              toolNames: tools.map((t) => t.name),
+            },
+          );
 
-      const messagesWithSystem: Message[] = [
-        {
-          id: "system",
-          role: "system",
-          content: fullPrompt,
-          createdAt: new Date(),
-        },
-        ...thread.messages,
-      ];
+          const messagesWithSystem: Message[] = [
+            {
+              id: "system",
+              role: "system",
+              content: fullPrompt,
+              createdAt: new Date(),
+            },
+            ...thread.messages,
+          ];
+
+          const stream = registered.adapter.run(
+            {
+              messages: messagesWithSystem,
+              tools,
+              threadId: thread.id,
+              signal,
+            },
+            { executeTool, signal },
+          );
 
-      const stream = registered.adapter.run(
-        {
-          messages: messagesWithSystem,
-          tools,
-          threadId: thread.id,
-          signal,
+          fullContent = await consumeAdapterStream(stream, { signal });
+
+          if (fullContent) {
+            span.setOutputs({ role: "assistant", content: fullContent });
+            await this.threadStore.addMessage(thread.id, userId, {
+              id: randomUUID(),
+              role: "assistant",
+              content: fullContent,
+              createdAt: new Date(),
+            });
+          }
         },
-        { executeTool, signal },
       );
-
-      fullContent = await consumeAdapterStream(stream, { signal });
-
-      if (fullContent) {
-        await this.threadStore.addMessage(thread.id, userId, {
-          id: randomUUID(),
-          role: "assistant",
-          content: fullContent,
-          createdAt: new Date(),
-        });
-      }
     } catch (error) {
       if (signal.aborted) {
         res.status(499).json({ error: "Request aborted" });
@@ -1387,51 +1444,61 @@ export class AgentsPlugin extends Plugin implements ToolProvider {
       }
     }
 
-    let result: unknown;
-    if (entry.source === "toolkit") {
-      if (!this.context) {
-        throw new Error(
-          "Plugin tool execution requires PluginContext; this should never happen through createApp",
+    // Traced from here so the span covers execution only, not the approval
+    // wait above (which is human latency).
+    const toolResult = await traceTool(name, args, async () => {
+      let result: unknown;
+      if (entry.source === "toolkit") {
+        if (!this.context) {
+          throw new Error(
+            "Plugin tool execution requires PluginContext; this should never happen through createApp",
+          );
+        }
+        result = await this.context.executeTool(
+          runState.req,
+          entry.pluginName,
+          entry.localName,
+          args,
+          runState.signal,
+          runState.limits.toolCallTimeoutMs,
         );
-      }
-      result = await this.context.executeTool(
-        runState.req,
-        entry.pluginName,
-        entry.localName,
-        args,
-        runState.signal,
-        runState.limits.toolCallTimeoutMs,
-      );
-    } else if (entry.source === "function") {
-      // Function tools declare their parameters as a JSON-object schema,
-      // so adapters always serialize `args` as an object. A non-object
-      // value here means the upstream model emitted malformed tool-call
-      // JSON; surface a clear error rather than silently passing through
-      // a wrong-shape value the tool will then choke on.
-      if (typeof args !== "object" || args === null || Array.isArray(args)) {
-        throw new Error(
-          `Function tool '${name}' received non-object arguments (got ${args === null ? "null" : Array.isArray(args) ? "array" : typeof args}); expected a JSON object.`,
+      } else if (entry.source === "function") {
+        // Function tools declare their parameters as a JSON-object schema,
+        // so adapters always serialize `args` as an object. A non-object
+        // value here means the upstream model emitted malformed tool-call
+        // JSON; surface a clear error rather than silently passing through
+        // a wrong-shape value the tool will then choke on.
+        if (typeof args !== "object" || args === null || Array.isArray(args)) {
+          throw new Error(
+            `Function tool '${name}' received non-object arguments (got ${args === null ? "null" : Array.isArray(args) ? "array" : typeof args}); expected a JSON object.`,
+          );
+        }
+        result = await entry.functionTool.execute(
+          args as Record<string, unknown>,
         );
+      } else if (entry.source === "mcp") {
+        if (!this.mcpClient) throw new Error("MCP client not connected");
+        const oboToken = runState.req.headers["x-forwarded-access-token"];
+        const mcpAuth =
+          typeof oboToken === "string"
+            ? { Authorization: `Bearer ${oboToken}` }
+            : undefined;
+        result = await this.mcpClient.callTool(
+          entry.mcpToolName,
+          args,
+          mcpAuth,
+        );
+      } else if (entry.source === "subagent") {
+        const childAgent = this.agents.get(entry.agentName);
+        if (!childAgent)
+          throw new Error(`Sub-agent not found: ${entry.agentName}`);
+        result = await this.runSubAgent(runState, childAgent, args, depth + 1);
       }
-      result = await entry.functionTool.execute(
-        args as Record<string, unknown>,
-      );
-    } else if (entry.source === "mcp") {
-      if (!this.mcpClient) throw new Error("MCP client not connected");
-      const oboToken = runState.req.headers["x-forwarded-access-token"];
-      const mcpAuth =
-        typeof oboToken === "string"
-          ? { Authorization: `Bearer ${oboToken}` }
-          : undefined;
-      result = await this.mcpClient.callTool(entry.mcpToolName, args, mcpAuth);
-    } else if (entry.source === "subagent") {
-      const childAgent = this.agents.get(entry.agentName);
-      if (!childAgent)
-        throw new Error(`Sub-agent not found: ${entry.agentName}`);
-      result = await this.runSubAgent(runState, childAgent, args, depth + 1);
-    }
 
-    return normalizeToolResult(result);
+      return result;
+    });
+
+    return normalizeToolResult(toolResult);
   }
 
   /**
diff --git a/packages/appkit/src/plugins/agents/manifest.json b/packages/appkit/src/plugins/agents/manifest.json
index f2e5420bc..4d6f52485 100644
--- a/packages/appkit/src/plugins/agents/manifest.json
+++ b/packages/appkit/src/plugins/agents/manifest.json
@@ -19,6 +19,19 @@
             "description": "Default LLM serving endpoint name"
           }
         }
+      },
+      {
+        "type": "experiment",
+        "alias": "MLflow experiment for agent traces",
+        "resourceKey": "agents-mlflow-experiment",
+        "description": "When bound, agent turns and tool calls are traced to this MLflow experiment via OpenTelemetry. Tracing is a no-op when unset.",
+        "permission": "CAN_EDIT",
+        "fields": {
+          "experimentId": {
+            "env": "MLFLOW_EXPERIMENT_ID",
+            "description": "MLflow experiment id traces are logged to"
+          }
+        }
       }
     ]
   }
diff --git a/packages/appkit/src/plugins/agents/mlflow.ts b/packages/appkit/src/plugins/agents/mlflow.ts
new file mode 100644
index 000000000..cd48b8190
--- /dev/null
+++ b/packages/appkit/src/plugins/agents/mlflow.ts
@@ -0,0 +1,157 @@
+import { createLogger } from "../../logging/logger";
+
+const logger = createLogger("agents");
+
+type MlflowModule = typeof import("mlflow-tracing");
+
+let mlflow: MlflowModule | undefined;
+let enabled = false;
+let initStarted = false;
+
+/** The bound MLflow experiment id, from the optional `experiment` resource. */
+function experimentId(): string | undefined {
+  const id = process.env.MLFLOW_EXPERIMENT_ID?.trim();
+  return id || undefined;
+}
+
+/**
+ * Databricks host with a scheme. The mlflow-tracing SDK uses `DATABRICKS_HOST`
+ * verbatim to build request URLs and doesn't add `https://`, so a bare host
+ * (`workspace.cloud.databricks.com`) makes `new URL()` throw. Pass an explicit
+ * normalized host when the env var is set; when it isn't (profile-based auth),
+ * return undefined and let the SDK read the host from `~/.databrickscfg`.
+ */
+function normalizedDatabricksHost(): string | undefined {
+  const raw = process.env.DATABRICKS_HOST?.trim();
+  if (!raw) return undefined;
+  return /^https?:\/\//i.test(raw) ? raw : `https://${raw}`;
+}
+
+/**
+ * Initialize MLflow agent tracing once, when an experiment is bound — i.e. the
+ * agents plugin's optional `experiment` resource is set (`MLFLOW_EXPERIMENT_ID`).
+ *
+ * Auth is resolved by the `mlflow-tracing` SDK from the app's own Databricks
+ * credentials — `DATABRICKS_HOST`/`DATABRICKS_TOKEN` or a `~/.databrickscfg`
+ * profile (`MLFLOW_TRACKING_URI=databricks://profile`) — so no tokens or OTLP
+ * headers are wired by hand. A failure (missing creds, bad experiment) logs and
+ * leaves tracing disabled rather than breaking the agent.
+ *
+ * Safe to call repeatedly; only the first call does work.
+ */
+export async function initAgentTracing(): Promise<void> {
+  if (initStarted) return;
+  initStarted = true;
+
+  const id = experimentId();
+  if (!id) return;
+
+  try {
+    mlflow = await import("mlflow-tracing");
+    const host = normalizedDatabricksHost();
+    mlflow.init({
+      trackingUri: process.env.MLFLOW_TRACKING_URI?.trim() || "databricks",
+      experimentId: id,
+      ...(host ? { host } : {}),
+    });
+    enabled = true;
+    logger.info("MLflow agent tracing enabled (experiment %s)", id);
+  } catch (err) {
+    logger.warn("MLflow agent tracing disabled: %O", err);
+  }
+}
+
+/**
+ * Records a span's outputs. Callers get one from `traceAgent`/`traceTool`;
+ * it's a no-op when tracing is disabled, so call sites never branch on it.
+ */
+export interface SpanRecorder {
+  setOutputs(outputs: unknown): void;
+}
+
+const noopRecorder: SpanRecorder = { setOutputs() {} };
+
+/**
+ * Run `fn` inside an MLflow span of `spanType` when tracing is enabled,
+ * otherwise just run it (zero overhead). Spans auto-nest via the SDK's active
+ * context, so a TOOL span opened inside an AGENT span's callback becomes its
+ * child. The callback's resolved value is recorded as the span's outputs unless
+ * it called `setOutputs` first; return `undefined` (or set outputs explicitly)
+ * when the return value isn't the output you want traced.
+ */
+async function trace<T>(
+  spanType: "AGENT" | "TOOL",
+  name: string,
+  inputs: unknown,
+  fn: (span: SpanRecorder) => Promise<T>,
+): Promise<T> {
+  if (!enabled || !mlflow) return fn(noopRecorder);
+  const type =
+    spanType === "AGENT" ? mlflow.SpanType.AGENT : mlflow.SpanType.TOOL;
+  return await mlflow.withSpan<T>(
+    async (span) => {
+      if (inputs !== undefined) span.setInputs(inputs);
+      let outputsSet = false;
+      const result = await fn({
+        setOutputs(outputs) {
+          outputsSet = true;
+          span.setOutputs(outputs);
+        },
+      });
+      if (!outputsSet && result !== undefined) span.setOutputs(result);
+      return result;
+    },
+    { name, spanType: type },
+  );
+}
+
+/** Trace a turn's root AGENT span. See {@link trace}. */
+export function traceAgent<T>(
+  name: string,
+  inputs: unknown,
+  fn: (span: SpanRecorder) => Promise<T>,
+): Promise<T> {
+  return trace("AGENT", name, inputs, fn);
+}
+
+/** Trace a TOOL span, nested under the active AGENT span. See {@link trace}. */
+export function traceTool<T>(
+  name: string,
+  inputs: unknown,
+  fn: (span: SpanRecorder) => Promise<T>,
+): Promise<T> {
+  return trace("TOOL", name, inputs, fn);
+}
+
+/**
+ * The MLflow trace id for the active turn, when tracing is enabled. Must be
+ * read inside an agent span so eval runs can correlate the turn to its trace
+ * and attach assessments. Returns undefined when tracing is off.
+ *
+ * Reads the context-active span rather than `getLastActiveTraceId()`: the
+ * latter is only populated when a root span *ends* (on export), so mid-turn it
+ * returns the previous turn's id — or, under concurrent turns, another turn's.
+ */
+export function currentTraceId(): string | undefined {
+  if (!enabled || !mlflow) return undefined;
+  try {
+    return mlflow.getCurrentActiveSpan()?.traceId;
+  } catch {
+    return undefined;
+  }
+}
+
+/**
+ * Link the active turn's trace to an MLflow run by id, via the `mlflow.sourceRun`
+ * trace metadata. Used by eval runs so each case's trace shows under the run.
+ * Must be called while a trace is active (inside an agent span). No-op when
+ * tracing is disabled.
+ */
+export function linkTraceToRun(runId: string): void {
+  if (!enabled || !mlflow) return;
+  try {
+    mlflow.updateCurrentTrace({ metadata: { "mlflow.sourceRun": runId } });
+  } catch (err) {
+    logger.warn("Failed to link trace to run %s: %O", runId, err);
+  }
+}
diff --git a/packages/appkit/src/plugins/agents/schemas.ts b/packages/appkit/src/plugins/agents/schemas.ts
index 395a8eab3..dd76d463b 100644
--- a/packages/appkit/src/plugins/agents/schemas.ts
+++ b/packages/appkit/src/plugins/agents/schemas.ts
@@ -34,6 +34,12 @@ export const chatRequestSchema = z.object({
     ),
   threadId: z.string().optional(),
   agent: z.string().optional(),
+  /**
+   * MLflow run id to link this turn's trace to (via `mlflow.sourceRun`), set by
+   * the eval runner so each case's trace shows under the evaluation run. Capped
+   * to a run-id-shaped length since it reaches trace metadata and logs.
+   */
+  mlflowRunId: z.string().max(64).optional(),
 });
 
 const messageItemSchema = z.object({
diff --git a/packages/appkit/src/plugins/agents/tests/mlflow.test.ts b/packages/appkit/src/plugins/agents/tests/mlflow.test.ts
new file mode 100644
index 000000000..a43c29cec
--- /dev/null
+++ b/packages/appkit/src/plugins/agents/tests/mlflow.test.ts
@@ -0,0 +1,90 @@
+import { afterEach, beforeEach, describe, expect, test, vi } from "vitest";
+
+/**
+ * The tracing module keeps module-level singleton state (`enabled`,
+ * `initStarted`) and lazily `import()`s `mlflow-tracing`. Each test resets the
+ * module registry and re-mocks the SDK so init runs fresh.
+ */
+
+function stubSdk(overrides: Record<string, unknown> = {}) {
+  const setInputs = vi.fn();
+  const setOutputs = vi.fn();
+  const span = { setInputs, setOutputs };
+  const sdk = {
+    init: vi.fn(),
+    SpanType: { AGENT: "AGENT", TOOL: "TOOL" },
+    withSpan: vi.fn(async (fn: (s: unknown) => unknown) => fn(span)),
+    getCurrentActiveSpan: vi.fn(() => ({ traceId: "tr-active" })),
+    // Must NOT be consulted by currentTraceId — it only reflects the last
+    // root span that *ended*, i.e. a previous/other turn.
+    getLastActiveTraceId: vi.fn(() => "tr-STALE"),
+    updateCurrentTrace: vi.fn(),
+    ...overrides,
+  };
+  vi.doMock("mlflow-tracing", () => sdk);
+  return { sdk, span, setInputs, setOutputs };
+}
+
+describe("agent tracing (mlflow)", () => {
+  beforeEach(() => {
+    vi.resetModules();
+    delete process.env.MLFLOW_EXPERIMENT_ID;
+  });
+
+  afterEach(() => {
+    vi.doUnmock("mlflow-tracing");
+    delete process.env.MLFLOW_EXPERIMENT_ID;
+  });
+
+  test("disabled (no experiment bound): still runs fn and returns its value", async () => {
+    const mod = await import("../mlflow");
+    await mod.initAgentTracing();
+
+    const fn = vi.fn(async () => "result");
+    await expect(mod.traceTool("t", { a: 1 }, fn)).resolves.toBe("result");
+    expect(fn).toHaveBeenCalledOnce();
+    expect(mod.currentTraceId()).toBeUndefined();
+  });
+
+  test("currentTraceId reads the context-active span, not getLastActiveTraceId", async () => {
+    process.env.MLFLOW_EXPERIMENT_ID = "exp-123";
+    const { sdk } = stubSdk();
+    const mod = await import("../mlflow");
+    await mod.initAgentTracing();
+
+    let seen: string | undefined;
+    await mod.traceAgent("agent", { messages: [] }, async () => {
+      seen = mod.currentTraceId();
+    });
+
+    expect(seen).toBe("tr-active");
+    expect(sdk.getCurrentActiveSpan).toHaveBeenCalled();
+    expect(sdk.getLastActiveTraceId).not.toHaveBeenCalled();
+  });
+
+  test("auto-captures the callback's return value as span outputs", async () => {
+    process.env.MLFLOW_EXPERIMENT_ID = "exp-123";
+    const { setOutputs } = stubSdk();
+    const mod = await import("../mlflow");
+    await mod.initAgentTracing();
+
+    await mod.traceTool("t", { a: 1 }, async () => ({ ok: true }));
+    expect(setOutputs).toHaveBeenCalledExactlyOnceWith({ ok: true });
+  });
+
+  test("explicit setOutputs wins over auto-capture (no double-set)", async () => {
+    process.env.MLFLOW_EXPERIMENT_ID = "exp-123";
+    const { setOutputs } = stubSdk();
+    const mod = await import("../mlflow");
+    await mod.initAgentTracing();
+
+    await mod.traceAgent("agent", { messages: [] }, async (span) => {
+      span.setOutputs({ role: "assistant", content: "hi" });
+      return "ignored-return";
+    });
+    expect(setOutputs).toHaveBeenCalledExactlyOnceWith({
+      role: "assistant",
+      content: "hi",
+    });
+  });
+});
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index c06f7db67..8ea36ab47 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -326,6 +326,9 @@ importers:
       magic-string:
         specifier: 0.30.21
         version: 0.30.21
+      mlflow-tracing:
+        specifier: 0.1.3
+        version: 0.1.3
       obug:
         specifier: 2.1.1
         version: 2.1.1
@@ -1958,6 +1961,10 @@ packages:
     engines: {node: ^20 || ^22 || ^24 || ^25, pnpm: '>=10'}
     hasBin: true
 
+  '@databricks/sdk-experimental@0.15.0':
+    resolution: {integrity: sha512-HkoMiF7dNDt6WRW0xhi7oPlBJQfxJ9suJhEZRFt08VwLMaWcw2PiF8monfHlkD4lkufEYV6CTxi5njQkciqiHA==}
+    engines: {node: '>=22.0', npm: '>=10.0.0'}
+
   '@databricks/sdk-experimental@0.17.0':
     resolution: {integrity: sha512-dOJIt4F2nBk6HKObnv7Xbmy/qLYTy2835qhXSuW0Qw1QAXui9plmCet1KqG3yeQcMTyncWGbnhjGdQi8GEGQSA==}
     engines: {node: '>=22.0', npm: '>=10.0.0'}
@@ -2790,6 +2797,10 @@ packages:
   '@octokit/types@16.0.0':
     resolution: {integrity: sha512-sKq+9r1Mm4efXW1FCk7hFSeJo4QKreL/tTbR0rz/qx/r1Oa2VV83LTA/H/MuCOX7uCIJmQVRKBcbmWoySjAnSg==}
 
+  '@opentelemetry/api-logs@0.205.0':
+    resolution: {integrity: sha512-wBlPk1nFB37Hsm+3Qy73yQSobVn28F4isnWIBvKpd5IUH/eat8bwcL02H9yzmHyyPmukeccSl2mbN5sDQZYnPg==}
+    engines: {node: '>=8.0.0'}
+
   '@opentelemetry/api-logs@0.219.0':
     resolution: {integrity: sha512-FFx7YnaYJlIjqWW/AG/yAZ0L/NEY724PipXXXQLdtZPbLwBGbUMTGL1i/esI56TWfTUXxhLfpgrnWJCG8aUJyg==}
     engines: {node: '>=8.0.0'}
@@ -2811,6 +2822,12 @@ packages:
     peerDependencies:
       '@opentelemetry/api': ^1.9.0
 
+  '@opentelemetry/context-async-hooks@2.1.0':
+    resolution: {integrity: sha512-zOyetmZppnwTyPrt4S7jMfXiSX9yyfF0hxlA8B5oo2TtKl+/RGCy7fi4DrBfIf3lCPrkKsRBWZZD7RFojK7FDg==}
+    engines: {node: ^18.19.0 || >=20.6.0}
+    peerDependencies:
+      '@opentelemetry/api': '>=1.0.0 <1.10.0'
+
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@@ -2823,66 +2840,132 @@ packages:
     peerDependencies:
       '@opentelemetry/api': '>=1.0.0 <1.10.0'
 
+  '@opentelemetry/exporter-logs-otlp-grpc@0.205.0':
+    resolution: {integrity: sha512-jQlw7OHbqZ8zPt+pOrW2KGN7T55P50e3NXBMr4ckPOF+DWDwSy4W7mkG09GpYWlQAQ5C9BXg5gfUlv5ldTgWsw==}
+    engines: {node: ^18.19.0 || >=20.6.0}
+    peerDependencies:
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+
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     engines: {node: ^18.19.0 || >=20.6.0}
     peerDependencies:
       '@opentelemetry/api': ^1.3.0
 
+  '@opentelemetry/exporter-logs-otlp-http@0.205.0':
+    resolution: {integrity: sha512-5JteMyVWiro4ghF0tHQjfE6OJcF7UBUcoEqX3UIQ5jutKP1H+fxFdyhqjjpmeHMFxzOHaYuLlNR1Bn7FOjGyJg==}
+    engines: {node: ^18.19.0 || >=20.6.0}
+    peerDependencies:
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+
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     resolution: {integrity: sha512-mhl2HL6GmZI8b8PwPfqMws/5ovJfbRTxwc9Y5agVVHiQ+e5SL1btsFr/kJDgt7YCexDtsUn5HAreHQO9szFS0A==}
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     engines: {node: ^18.19.0 || >=20.6.0}
     peerDependencies:
       '@opentelemetry/api': ^1.3.0
 
+  '@opentelemetry/exporter-zipkin@2.1.0':
+    resolution: {integrity: sha512-0mEI0VDZrrX9t5RE1FhAyGz+jAGt96HSuXu73leswtY3L5YZD11gtcpARY2KAx/s6Z2+rj5Mhj566JsI2C7mfA==}
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+
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@@ -3135,24 +3218,48 @@ packages:
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       '@opentelemetry/api': ^1.3.0
 
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+
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     engines: {node: ^18.19.0 || >=20.6.0}
     peerDependencies:
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+  '@opentelemetry/otlp-exporter-base@0.205.0':
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+    engines: {node: ^18.19.0 || >=20.6.0}
+    peerDependencies:
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+
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+
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     engines: {node: ^18.19.0 || >=20.6.0}
     peerDependencies:
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+  '@opentelemetry/otlp-transformer@0.205.0':
+    resolution: {integrity: sha512-KmObgqPtk9k/XTlWPJHdMbGCylRAmMJNXIRh6VYJmvlRDMfe+DonH41G7eenG8t4FXn3fxOGh14o/WiMRR6vPg==}
+    engines: {node: ^18.19.0 || >=20.6.0}
+    peerDependencies:
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+
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@@ -3165,12 +3272,24 @@ packages:
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       '@opentelemetry/api': '>=1.0.0 <1.10.0'
 
+  '@opentelemetry/propagator-b3@2.1.0':
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+
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     engines: {node: ^18.19.0 || >=20.6.0}
     peerDependencies:
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+  '@opentelemetry/propagator-jaeger@2.1.0':
+    resolution: {integrity: sha512-QYo7vLyMjrBCUTpwQBF/e+rvP7oGskrSELGxhSvLj5gpM0az9oJnu/0O4l2Nm7LEhAff80ntRYKkAcSwVgvSVQ==}
+    engines: {node: ^18.19.0 || >=20.6.0}
+    peerDependencies:
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+
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@@ -3211,36 +3330,72 @@ packages:
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+
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+    engines: {node: ^18.19.0 || >=20.6.0}
+    peerDependencies:
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+
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     engines: {node: ^18.19.0 || >=20.6.0}
     peerDependencies:
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+  '@opentelemetry/sdk-trace-node@2.1.0':
+    resolution: {integrity: sha512-SvVlBFc/jI96u/mmlKm86n9BbTCbQ35nsPoOohqJX6DXH92K0kTe73zGY5r8xoI1QkjR9PizszVJLzMC966y9Q==}
+    engines: {node: ^18.19.0 || >=20.6.0}
+    peerDependencies:
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+
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+  fast-safe-stringify@2.1.1:
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+
   fast-uri@3.1.0:
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     engines: {node: '>=6'}
 
+  import-in-the-middle@1.15.0:
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+
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     engines: {node: ^14.17.0 || ^16.13.0 || >=18.0.0}
 
+  ini@5.0.0:
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+    engines: {node: ^18.17.0 || >=20.5.0}
+
   ini@6.0.0:
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     engines: {node: ^20.17.0 || >=22.9.0}
@@ -8891,6 +9056,10 @@ packages:
     engines: {node: '>=10'}
     hasBin: true
 
+  mlflow-tracing@0.1.3:
+    resolution: {integrity: sha512-Koqkwaid5ubGHuLprBP6J7Su70WddlD11f2vgzgxbFFHYKsAsJatMGvjIck5CkyhT/gMUyBqpA3Lkl+zC3W3uQ==}
+    engines: {node: '>=18'}
+
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     engines: {node: '>=0.10.0'}
 
+  require-in-the-middle@7.5.2:
+    resolution: {integrity: sha512-gAZ+kLqBdHarXB64XpAe2VCjB7rIRv+mU8tfRWziHRJ5umKsIHN2tLLv6EtMw7WCdP19S0ERVMldNvxYCHnhSQ==}
+    engines: {node: '>=8.6.0'}
+
   require-in-the-middle@8.0.1:
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     engines: {node: '>=9.3.0 || >=8.10.0 <9.0.0'}
@@ -13579,6 +13752,15 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
+  '@databricks/sdk-experimental@0.15.0':
+    dependencies:
+      google-auth-library: 10.5.0
+      ini: 6.0.0
+      reflect-metadata: 0.2.2
+      semver: 7.7.3
+    transitivePeerDependencies:
+      - supports-color
+
   '@databricks/sdk-experimental@0.17.0':
     dependencies:
       google-auth-library: 10.5.0
@@ -15013,6 +15195,10 @@ snapshots:
     dependencies:
       '@octokit/openapi-types': 27.0.0
 
+  '@opentelemetry/api-logs@0.205.0':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+
   '@opentelemetry/api-logs@0.219.0':
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@@ -15081,6 +15267,10 @@ snapshots:
       '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
       yaml: 2.8.2
 
+  '@opentelemetry/context-async-hooks@2.1.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+
   '@opentelemetry/context-async-hooks@2.8.0(@opentelemetry/api@1.9.0)':
     dependencies:
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@@ -15090,6 +15280,16 @@ snapshots:
       '@opentelemetry/api': 1.9.0
       '@opentelemetry/semantic-conventions': 1.38.0
 
+  '@opentelemetry/exporter-logs-otlp-grpc@0.205.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@grpc/grpc-js': 1.14.4
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-exporter-base': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-grpc-exporter-base': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-transformer': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/sdk-logs': 0.205.0(@opentelemetry/api@1.9.0)
+
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       '@opentelemetry/sdk-logs': 0.219.0(@opentelemetry/api@1.9.0)
 
+  '@opentelemetry/exporter-logs-otlp-http@0.205.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/api-logs': 0.205.0
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-exporter-base': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-transformer': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/sdk-logs': 0.205.0(@opentelemetry/api@1.9.0)
+
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       '@opentelemetry/sdk-logs': 0.219.0(@opentelemetry/api@1.9.0)
 
+  '@opentelemetry/exporter-logs-otlp-proto@0.205.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/api-logs': 0.205.0
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-exporter-base': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-transformer': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/resources': 2.1.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/sdk-logs': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/sdk-trace-base': 2.1.0(@opentelemetry/api@1.9.0)
+
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       '@opentelemetry/sdk-trace-base': 2.8.0(@opentelemetry/api@1.9.0)
 
+  '@opentelemetry/exporter-metrics-otlp-grpc@0.205.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@grpc/grpc-js': 1.14.4
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/exporter-metrics-otlp-http': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-exporter-base': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-grpc-exporter-base': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-transformer': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/resources': 2.1.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/sdk-metrics': 2.1.0(@opentelemetry/api@1.9.0)
+
   '@opentelemetry/exporter-metrics-otlp-grpc@0.219.0(@opentelemetry/api@1.9.0)':
     dependencies:
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       '@opentelemetry/sdk-metrics': 2.8.0(@opentelemetry/api@1.9.0)
 
+  '@opentelemetry/exporter-metrics-otlp-http@0.205.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-exporter-base': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-transformer': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/resources': 2.1.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/sdk-metrics': 2.1.0(@opentelemetry/api@1.9.0)
+
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     dependencies:
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@@ -15141,6 +15382,16 @@ snapshots:
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       '@opentelemetry/sdk-metrics': 2.8.0(@opentelemetry/api@1.9.0)
 
+  '@opentelemetry/exporter-metrics-otlp-proto@0.205.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/exporter-metrics-otlp-http': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-exporter-base': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-transformer': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/resources': 2.1.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/sdk-metrics': 2.1.0(@opentelemetry/api@1.9.0)
+
   '@opentelemetry/exporter-metrics-otlp-proto@0.219.0(@opentelemetry/api@1.9.0)':
     dependencies:
       '@opentelemetry/api': 1.9.0
@@ -15151,6 +15402,13 @@ snapshots:
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       '@opentelemetry/sdk-metrics': 2.8.0(@opentelemetry/api@1.9.0)
 
+  '@opentelemetry/exporter-prometheus@0.205.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/resources': 2.1.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/sdk-metrics': 2.1.0(@opentelemetry/api@1.9.0)
+
   '@opentelemetry/exporter-prometheus@0.219.0(@opentelemetry/api@1.9.0)':
     dependencies:
       '@opentelemetry/api': 1.9.0
@@ -15159,6 +15417,17 @@ snapshots:
       '@opentelemetry/sdk-metrics': 2.8.0(@opentelemetry/api@1.9.0)
       '@opentelemetry/semantic-conventions': 1.38.0
 
+  '@opentelemetry/exporter-trace-otlp-grpc@0.205.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@grpc/grpc-js': 1.14.4
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-exporter-base': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-grpc-exporter-base': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-transformer': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/resources': 2.1.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/sdk-trace-base': 2.1.0(@opentelemetry/api@1.9.0)
+
   '@opentelemetry/exporter-trace-otlp-grpc@0.219.0(@opentelemetry/api@1.9.0)':
     dependencies:
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@@ -15170,6 +15439,15 @@ snapshots:
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       '@opentelemetry/sdk-trace-base': 2.8.0(@opentelemetry/api@1.9.0)
 
+  '@opentelemetry/exporter-trace-otlp-http@0.205.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-exporter-base': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-transformer': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/resources': 2.1.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/sdk-trace-base': 2.1.0(@opentelemetry/api@1.9.0)
+
   '@opentelemetry/exporter-trace-otlp-http@0.219.0(@opentelemetry/api@1.9.0)':
     dependencies:
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       '@opentelemetry/sdk-trace-base': 2.8.0(@opentelemetry/api@1.9.0)
 
+  '@opentelemetry/exporter-trace-otlp-proto@0.205.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-exporter-base': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-transformer': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/resources': 2.1.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/sdk-trace-base': 2.1.0(@opentelemetry/api@1.9.0)
+
   '@opentelemetry/exporter-trace-otlp-proto@0.219.0(@opentelemetry/api@1.9.0)':
     dependencies:
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@@ -15188,6 +15475,14 @@ snapshots:
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       '@opentelemetry/sdk-trace-base': 2.8.0(@opentelemetry/api@1.9.0)
 
+  '@opentelemetry/exporter-zipkin@2.1.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/resources': 2.1.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/sdk-trace-base': 2.1.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/semantic-conventions': 1.38.0
+
   '@opentelemetry/exporter-zipkin@2.8.0(@opentelemetry/api@1.9.0)':
     dependencies:
       '@opentelemetry/api': 1.9.0
@@ -15547,6 +15842,15 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
+  '@opentelemetry/instrumentation@0.205.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/api-logs': 0.205.0
+      import-in-the-middle: 1.15.0
+      require-in-the-middle: 7.5.2
+    transitivePeerDependencies:
+      - supports-color
+
   '@opentelemetry/instrumentation@0.219.0(@opentelemetry/api@1.9.0)':
     dependencies:
       '@opentelemetry/api': 1.9.0
@@ -15556,12 +15860,26 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
+  '@opentelemetry/otlp-exporter-base@0.205.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-transformer': 0.205.0(@opentelemetry/api@1.9.0)
+
   '@opentelemetry/otlp-exporter-base@0.219.0(@opentelemetry/api@1.9.0)':
     dependencies:
       '@opentelemetry/api': 1.9.0
       '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
       '@opentelemetry/otlp-transformer': 0.219.0(@opentelemetry/api@1.9.0)
 
+  '@opentelemetry/otlp-grpc-exporter-base@0.205.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@grpc/grpc-js': 1.14.4
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-exporter-base': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/otlp-transformer': 0.205.0(@opentelemetry/api@1.9.0)
+
   '@opentelemetry/otlp-grpc-exporter-base@0.219.0(@opentelemetry/api@1.9.0)':
     dependencies:
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@@ -15570,6 +15888,17 @@ snapshots:
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       '@opentelemetry/otlp-transformer': 0.219.0(@opentelemetry/api@1.9.0)
 
+  '@opentelemetry/otlp-transformer@0.205.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/api-logs': 0.205.0
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/resources': 2.1.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/sdk-logs': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/sdk-metrics': 2.1.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/sdk-trace-base': 2.1.0(@opentelemetry/api@1.9.0)
+      protobufjs: 7.6.2
+
   '@opentelemetry/otlp-transformer@0.219.0(@opentelemetry/api@1.9.0)':
     dependencies:
       '@opentelemetry/api': 1.9.0
@@ -15584,11 +15913,21 @@ snapshots:
     dependencies:
       '@opentelemetry/api': 1.9.0
 
+  '@opentelemetry/propagator-b3@2.1.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+
   '@opentelemetry/propagator-b3@2.8.0(@opentelemetry/api@1.9.0)':
     dependencies:
       '@opentelemetry/api': 1.9.0
       '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
 
+  '@opentelemetry/propagator-jaeger@2.1.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+
   '@opentelemetry/propagator-jaeger@2.8.0(@opentelemetry/api@1.9.0)':
     dependencies:
       '@opentelemetry/api': 1.9.0
@@ -15631,12 +15970,25 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
+  '@opentelemetry/resources@2.1.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/semantic-conventions': 1.38.0
+
   '@opentelemetry/resources@2.8.0(@opentelemetry/api@1.9.0)':
     dependencies:
       '@opentelemetry/api': 1.9.0
       '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
       '@opentelemetry/semantic-conventions': 1.38.0
 
+  '@opentelemetry/sdk-logs@0.205.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/api-logs': 0.205.0
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/resources': 2.1.0(@opentelemetry/api@1.9.0)
+
   '@opentelemetry/sdk-logs@0.219.0(@opentelemetry/api@1.9.0)':
     dependencies:
       '@opentelemetry/api': 1.9.0
@@ -15645,12 +15997,46 @@ snapshots:
       '@opentelemetry/resources': 2.8.0(@opentelemetry/api@1.9.0)
       '@opentelemetry/semantic-conventions': 1.38.0
 
+  '@opentelemetry/sdk-metrics@2.1.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/resources': 2.1.0(@opentelemetry/api@1.9.0)
+
   '@opentelemetry/sdk-metrics@2.8.0(@opentelemetry/api@1.9.0)':
     dependencies:
       '@opentelemetry/api': 1.9.0
       '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
       '@opentelemetry/resources': 2.8.0(@opentelemetry/api@1.9.0)
 
+  '@opentelemetry/sdk-node@0.205.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/api-logs': 0.205.0
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/exporter-logs-otlp-grpc': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/exporter-logs-otlp-http': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/exporter-logs-otlp-proto': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/exporter-metrics-otlp-grpc': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/exporter-metrics-otlp-http': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/exporter-metrics-otlp-proto': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/exporter-prometheus': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/exporter-trace-otlp-grpc': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/exporter-trace-otlp-http': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/exporter-trace-otlp-proto': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/exporter-zipkin': 2.1.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/instrumentation': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/propagator-b3': 2.1.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/propagator-jaeger': 2.1.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/resources': 2.1.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/sdk-logs': 0.205.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/sdk-metrics': 2.1.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/sdk-trace-base': 2.1.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/sdk-trace-node': 2.1.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/semantic-conventions': 1.38.0
+    transitivePeerDependencies:
+      - supports-color
+
   '@opentelemetry/sdk-node@0.219.0(@opentelemetry/api@1.9.0)':
     dependencies:
       '@opentelemetry/api': 1.9.0
@@ -15683,6 +16069,13 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
+  '@opentelemetry/sdk-trace-base@2.1.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/resources': 2.1.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/semantic-conventions': 1.38.0
+
   '@opentelemetry/sdk-trace-base@2.8.0(@opentelemetry/api@1.9.0)':
     dependencies:
       '@opentelemetry/api': 1.9.0
@@ -15690,6 +16083,13 @@ snapshots:
       '@opentelemetry/resources': 2.8.0(@opentelemetry/api@1.9.0)
       '@opentelemetry/semantic-conventions': 1.38.0
 
+  '@opentelemetry/sdk-trace-node@2.1.0(@opentelemetry/api@1.9.0)':
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/context-async-hooks': 2.1.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/core': 2.8.0(@opentelemetry/api@1.9.0)
+      '@opentelemetry/sdk-trace-base': 2.1.0(@opentelemetry/api@1.9.0)
+
   '@opentelemetry/sdk-trace-node@2.8.0(@opentelemetry/api@1.9.0)':
     dependencies:
       '@opentelemetry/api': 1.9.0
@@ -19640,6 +20040,8 @@ snapshots:
 
   fast-levenshtein@2.0.6: {}
 
+  fast-safe-stringify@2.1.1: {}
+
   fast-uri@3.1.0: {}
 
   fastq@1.19.1:
@@ -20554,6 +20956,13 @@ snapshots:
       parent-module: 1.0.1
       resolve-from: 4.0.0
 
+  import-in-the-middle@1.15.0:
+    dependencies:
+      acorn: 8.15.0
+      acorn-import-attributes: 1.9.5(acorn@8.15.0)
+      cjs-module-lexer: 1.4.3
+      module-details-from-path: 1.0.4
+
   import-in-the-middle@3.0.1:
     dependencies:
       acorn: 8.15.0
@@ -20585,6 +20994,8 @@ snapshots:
 
   ini@4.1.1: {}
 
+  ini@5.0.0: {}
+
   ini@6.0.0: {}
 
   inline-style-parser@0.2.7: {}
@@ -21875,6 +22286,17 @@ snapshots:
 
   mkdirp@3.0.1: {}
 
+  mlflow-tracing@0.1.3:
+    dependencies:
+      '@databricks/sdk-experimental': 0.15.0
+      '@opentelemetry/api': 1.9.0
+      '@opentelemetry/sdk-node': 0.205.0(@opentelemetry/api@1.9.0)
+      bignumber.js: 9.3.1
+      fast-safe-stringify: 2.1.1
+      ini: 5.0.0
+    transitivePeerDependencies:
+      - supports-color
+
   mlly@1.8.0:
     dependencies:
       acorn: 8.15.0
@@ -23393,6 +23815,14 @@ snapshots:
 
   require-from-string@2.0.2: {}
 
+  require-in-the-middle@7.5.2:
+    dependencies:
+      debug: 4.4.3
+      module-details-from-path: 1.0.4
+      resolve: 1.22.10
+    transitivePeerDependencies:
+      - supports-color
+
   require-in-the-middle@8.0.1:
     dependencies:
       debug: 4.4.3
diff --git a/template/appkit.plugins.json b/template/appkit.plugins.json
index a4aa1c26e..5675a1687 100644
--- a/template/appkit.plugins.json
+++ b/template/appkit.plugins.json
@@ -23,6 +23,20 @@
                 "origin": "user"
               }
             }
+          },
+          {
+            "type": "experiment",
+            "alias": "MLflow experiment for agent traces",
+            "resourceKey": "agents-mlflow-experiment",
+            "description": "When bound, agent turns and tool calls are traced to this MLflow experiment via OpenTelemetry. Tracing is a no-op when unset.",
+            "permission": "CAN_EDIT",
+            "fields": {
+              "experimentId": {
+                "env": "MLFLOW_EXPERIMENT_ID",
+                "description": "MLflow experiment id traces are logged to",
+                "origin": "user"
+              }
+            }
           }
         ]
       },