diff --git a/.env.example b/.env.example
index 43fb21f..e0edf2d 100644
--- a/.env.example
+++ b/.env.example
@@ -6,6 +6,17 @@ SCALEKIT_CLIENT_ID=skc_your_client_id_here
 SCALEKIT_CLIENT_SECRET=skcs_your_client_secret_here
 SCALEKIT_ENVIRONMENT_URL=https://your-subdomain.scalekit.dev
 
+# LangSmith tracing (for langsmith_tracing.py example).
+# Get your API key from: https://smith.langchain.com/settings
+LANGCHAIN_TRACING_V2=true
+LANGCHAIN_API_KEY=lsv2_your_langsmith_api_key_here
+LANGCHAIN_PROJECT=scalekit-langsmith-test
+
+# LiteLLM proxy (used by LangChain and other framework examples).
+LITELLM_BASE_URL=
+LITELLM_API_KEY=
+LITELLM_MODEL=claude-sonnet-4-6
+
 # Optional model provider settings for framework examples.
 OPENAI_BASE_URL=
 OPENAI_API_KEY=
diff --git a/README.md b/README.md
index 56c7d6a..4d4637d 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,13 @@ These examples are the framework-oriented AgentKit samples migrated from the doc
 |----------|------|
 | Quickstart | [python/frameworks/quickstart/main.py](python/frameworks/quickstart/main.py) |
 | LangChain | [python/frameworks/langchain/agent.py](python/frameworks/langchain/agent.py) |
+| LangChain + LangSmith | [python/frameworks/langchain/langsmith_tracing.py](python/frameworks/langchain/langsmith_tracing.py) |
+
+#### LangSmith trace output
+
+Scalekit tool calls appear as native tool spans in LangSmith alongside LLM calls:
+
+![LangSmith trace showing Scalekit gmail_fetch_mails tool call](python/frameworks/langchain/images/langsmith-trace.png)
 | Google ADK | [python/frameworks/google-adk/agent.py](python/frameworks/google-adk/agent.py) |
 | Anthropic | [python/frameworks/anthropic/agent.py](python/frameworks/anthropic/agent.py) |
 | OpenAI-compatible | [python/frameworks/openai/agent.py](python/frameworks/openai/agent.py) |
diff --git a/python/frameworks/langchain/images/langsmith-trace.png b/python/frameworks/langchain/images/langsmith-trace.png
new file mode 100644
index 0000000..785cd70
Binary files /dev/null and b/python/frameworks/langchain/images/langsmith-trace.png differ
diff --git a/python/frameworks/langchain/langsmith_tracing.py b/python/frameworks/langchain/langsmith_tracing.py
new file mode 100644
index 0000000..58f5b53
--- /dev/null
+++ b/python/frameworks/langchain/langsmith_tracing.py
@@ -0,0 +1,110 @@
+"""
+LangChain agent with Scalekit tools + LangSmith tracing.
+
+Demonstrates that Scalekit's native LangChain StructuredTool objects trace
+automatically in LangSmith when LANGCHAIN_TRACING_V2=true.
+
+Run: python python/frameworks/langchain/langsmith_tracing.py
+
+Required env vars (.env at repo root):
+    SCALEKIT_ENVIRONMENT_URL  SCALEKIT_CLIENT_ID  SCALEKIT_CLIENT_SECRET
+    LITELLM_BASE_URL          LITELLM_API_KEY
+    LANGCHAIN_TRACING_V2=true
+    LANGCHAIN_API_KEY          (this is the LangSmith API key)
+
+Optional:
+    LITELLM_MODEL      (default: "claude-sonnet-4-6")
+    LANGCHAIN_PROJECT  (default: "scalekit-langsmith-test")
+"""
+
+import os
+
+from dotenv import find_dotenv, load_dotenv
+
+load_dotenv(find_dotenv())
+
+# ── Verify LangSmith tracing is configured ──────────────────────────────────
+
+tracing_enabled = os.getenv("LANGCHAIN_TRACING_V2", "").lower() == "true"
+langsmith_key = os.getenv("LANGCHAIN_API_KEY", "")
+project = os.getenv("LANGCHAIN_PROJECT", "scalekit-langsmith-test")
+
+if not tracing_enabled:
+    print("⚠️  LANGCHAIN_TRACING_V2 is not set to 'true'. Traces will NOT be sent to LangSmith.")
+    print("   Set LANGCHAIN_TRACING_V2=true in your .env to enable tracing.")
+if not langsmith_key:
+    print("⚠️  LANGCHAIN_API_KEY is not set. Traces will NOT be sent to LangSmith.")
+    print("   Get your API key from https://smith.langchain.com/settings")
+else:
+    print(f"✅ LangSmith tracing enabled — project: {project}")
+
+# ── Initialize Scalekit client ──────────────────────────────────────────────
+
+import scalekit.client
+
+scalekit_client = scalekit.client.ScalekitClient(
+    client_id=os.getenv("SCALEKIT_CLIENT_ID"),
+    client_secret=os.getenv("SCALEKIT_CLIENT_SECRET"),
+    env_url=os.getenv("SCALEKIT_ENVIRONMENT_URL"),
+)
+actions = scalekit_client.actions
+
+# ── Connect user to Gmail ───────────────────────────────────────────────────
+
+IDENTIFIER = "user_123"
+
+response = actions.get_or_create_connected_account(
+    connection_name="gmail",
+    identifier=IDENTIFIER,
+)
+if response.connected_account.status != "ACTIVE":
+    link = actions.get_authorization_link(connection_name="gmail", identifier=IDENTIFIER)
+    print("Authorize Gmail:", link.link)
+    input("Press Enter after authorizing...")
+else:
+    print(f"✅ Gmail connected for {IDENTIFIER}")
+
+# ── Get native LangChain tools ──────────────────────────────────────────────
+
+tools = actions.langchain.get_tools(
+    identifier=IDENTIFIER,
+    connection_names=["gmail"],
+)
+tool_map = {t.name: t for t in tools}
+print(f"✅ Loaded {len(tools)} LangChain tools: {[t.name for t in tools[:5]]}")
+
+# ── Run agent with LangSmith tracing ────────────────────────────────────────
+
+from langchain_core.messages import HumanMessage, ToolMessage
+from langchain_openai import ChatOpenAI
+
+model = os.getenv("LITELLM_MODEL", "claude-sonnet-4-6")
+llm = ChatOpenAI(
+    model=model,
+    openai_api_base=os.getenv("LITELLM_BASE_URL"),
+    openai_api_key=os.getenv("LITELLM_API_KEY"),
+).bind_tools(tools)
+print(f"✅ Using model: {model} via LiteLLM")
+messages = [HumanMessage("Fetch my last 3 unread emails and summarize them")]
+
+print("\n--- Running agent (traces sent to LangSmith) ---\n")
+
+tool_call_count = 0
+while True:
+    response = llm.invoke(messages)
+    messages.append(response)
+    if not response.tool_calls:
+        print(response.content)
+        break
+    for tc in response.tool_calls:
+        tool_call_count += 1
+        print(f"  🔧 Tool call #{tool_call_count}: {tc['name']}")
+        result = tool_map[tc["name"]].invoke(tc["args"])
+        messages.append(ToolMessage(content=str(result), tool_call_id=tc["id"]))
+
+# ── Summary ─────────────────────────────────────────────────────────────────
+
+print(f"\n✅ Agent completed — {tool_call_count} tool call(s)")
+if tracing_enabled and langsmith_key:
+    print(f"✅ Check traces at: https://smith.langchain.com/o/default/projects/p/{project}")
+    print("   (Open LangSmith → select your project → view the latest trace)")
diff --git a/python/requirements.txt b/python/requirements.txt
index ffe9405..3dff0e4 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -4,6 +4,7 @@ requests
 anthropic
 langchain
 langchain-openai
+langsmith
 google-adk
 litellm
 openai