diff --git a/web/agent/pyproject.toml b/web/agent/pyproject.toml
index 771e892..aa48c46 100644
--- a/web/agent/pyproject.toml
+++ b/web/agent/pyproject.toml
@@ -12,4 +12,5 @@ dependencies = [
     "ag-ui-protocol",
     "python-dotenv",
     "httpx",
+    "logfire>=4.16.0",
 ]
diff --git a/web/agent/src/agent.py b/web/agent/src/agent.py
index 504c226..c8247c0 100644
--- a/web/agent/src/agent.py
+++ b/web/agent/src/agent.py
@@ -5,6 +5,16 @@ PydanticAI agent with MCP tools from Cavepedia server.
 import os
 import logging
 import httpx
+import logfire
+
+# Configure Logfire for observability
+# Uses LOGFIRE_TOKEN in production, or local auth from `logfire auth` in dev
+logfire.configure(
+    project_name='cavepediav2',
+    environment=os.getenv('ENVIRONMENT', 'development'),
+)
+logfire.instrument_pydantic_ai()
+logfire.instrument_httpx()
 
 from pydantic_ai import Agent, ModelMessage, RunContext
 from pydantic_ai.settings import ModelSettings
diff --git a/web/agent/uv.lock b/web/agent/uv.lock
index 600916c..8ca536e 100644
--- a/web/agent/uv.lock
+++ b/web/agent/uv.lock
@@ -231,6 +231,7 @@ source = { virtual = "." }
 dependencies = [
     { name = "ag-ui-protocol" },
     { name = "httpx" },
+    { name = "logfire" },
     { name = "mcp" },
     { name = "openai" },
     { name = "pydantic-ai" },
@@ -243,6 +244,7 @@ dependencies = [
 requires-dist = [
     { name = "ag-ui-protocol" },
     { name = "httpx" },
+    { name = "logfire", specifier = ">=4.16.0" },
     { name = "mcp" },
     { name = "openai" },
     { name = "pydantic-ai" },