diff --git a/packages/uipath/pyproject.toml b/packages/uipath/pyproject.toml
index efcce771c..20bc31c4f 100644
--- a/packages/uipath/pyproject.toml
+++ b/packages/uipath/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "uipath"
-version = "2.12.4"
+version = "2.12.5"
 description = "Python SDK and CLI for UiPath Platform, enabling programmatic interaction with automation services, process management, and deployment tools."
 readme = { file = "README.md", content-type = "text/markdown" }
 requires-python = ">=3.11"
diff --git a/packages/uipath/src/uipath/tracing/_otel_exporters.py b/packages/uipath/src/uipath/tracing/_otel_exporters.py
index fd7d01d5c..f8ec3aace 100644
--- a/packages/uipath/src/uipath/tracing/_otel_exporters.py
+++ b/packages/uipath/src/uipath/tracing/_otel_exporters.py
@@ -13,7 +13,7 @@
 
 from uipath._utils._ssl_context import get_httpx_client_kwargs
 from uipath.platform.common import _SpanUtils
-from uipath.platform.common._span_utils import SpanStatus
+from uipath.platform.common._span_utils import SpanSource, SpanStatus
 from uipath.platform.common.retry import NON_RETRYABLE_STATUS_CODES
 from uipath.platform.constants import (
     ENV_BASE_URL,
@@ -381,11 +381,15 @@ def _process_span_attributes(self, span_data: Dict[str, Any]) -> None:
         span_data["Status"] = status
 
     def _build_url(self, span_list: list[Dict[str, Any]]) -> str:
-        """Construct the URL for the API request."""
+        """Construct the URL for the API request.
+
+        The `source` query param is what the server persists as Trace.Source
+        (the span-body Source is ignored on ingest), so derive it from the
+        span's resolved SpanSource. Falls back to CodedAgents when absent.
+        """
         trace_id = str(span_list[0]["TraceId"])
-        return (
-            f"{self.base_url}/api/Traces/v3/spans?traceId={trace_id}&source=CodedAgents"
-        )
+        source = str(span_list[0].get("Source") or SpanSource.CODED_AGENTS)
+        return f"{self.base_url}/api/Traces/v3/spans?traceId={trace_id}&source={source}"
 
     def _send_with_retries(
         self, url: str, payload: list[Dict[str, Any]], max_retries: int = 4
diff --git a/packages/uipath/tests/tracing/test_otel_exporters.py b/packages/uipath/tests/tracing/test_otel_exporters.py
index bba826be5..939dbb8cd 100644
--- a/packages/uipath/tests/tracing/test_otel_exporters.py
+++ b/packages/uipath/tests/tracing/test_otel_exporters.py
@@ -7,7 +7,7 @@
 from opentelemetry.sdk.trace import ReadableSpan
 from opentelemetry.sdk.trace.export import SpanExportResult
 
-from uipath.platform.common._span_utils import SpanStatus
+from uipath.platform.common._span_utils import SpanSource, SpanStatus
 from uipath.platform.constants import (
     HEADER_INTERNAL_ACCOUNT_ID,
     HEADER_INTERNAL_TENANT_ID,
@@ -290,6 +290,77 @@ def test_build_url_uses_v3_endpoint(mock_env_vars):
     assert "/api/Traces/spans" not in url.replace("/api/Traces/v3/spans", "")
 
 
+def test_build_url_uses_span_source_agents(mock_env_vars):
+    """_build_url must render the span's Source (Agents), not the hardcoded CodedAgents."""
+    with patch("uipath.tracing._otel_exporters.httpx.Client"):
+        exporter = LlmOpsHttpExporter()
+    span_list = [{"TraceId": "ab" * 16, "Source": SpanSource.AGENTS}]
+    url = exporter._build_url(span_list)
+    assert "&source=Agents" in url
+    assert "&source=CodedAgents" not in url
+    assert "/api/Traces/v3/spans" in url
+
+
+def test_build_url_uses_span_source_coded_agents(mock_env_vars):
+    """An explicit CodedAgents Source still renders CodedAgents."""
+    with patch("uipath.tracing._otel_exporters.httpx.Client"):
+        exporter = LlmOpsHttpExporter()
+    span_list = [{"TraceId": "ab" * 16, "Source": SpanSource.CODED_AGENTS}]
+    url = exporter._build_url(span_list)
+    assert "&source=CodedAgents" in url
+
+
+def test_build_url_defaults_to_coded_agents_when_source_missing(mock_env_vars):
+    """When the span dict has no Source key, default to CodedAgents (back-compat)."""
+    with patch("uipath.tracing._otel_exporters.httpx.Client"):
+        exporter = LlmOpsHttpExporter()
+    span_list = [{"TraceId": "ab" * 16}]
+    url = exporter._build_url(span_list)
+    assert "&source=CodedAgents" in url
+
+
+def test_agent_builder_span_yields_source_agents(mock_env_vars):
+    """A span with uipath.source=1 must flow through to &source=Agents in the URL.
+
+    Drives a real span dict through otel_span_to_uipath_span().to_dict() rather
+    than hand-building it, guarding the whole attribute->Source->URL path.
+    """
+    from opentelemetry.trace import SpanContext, StatusCode
+
+    from uipath.platform.common import _SpanUtils
+
+    # otel_span_to_uipath_span reads the context via get_span_context() and
+    # formats trace_id/span_id as hex, so provide a real SpanContext.
+    span = MagicMock(spec=ReadableSpan)
+    span.get_span_context.return_value = SpanContext(
+        trace_id=0xABCDEF1234567890ABCDEF1234567890,
+        span_id=0x1234567890ABCDEF,
+        is_remote=False,
+    )
+    span.parent = None
+    span.name = "agent-span"
+    span.status.status_code = StatusCode.OK
+    span.status.description = None
+    span.attributes = {
+        "uipath.custom_instrumentation": True,
+        "uipath.source": 1,  # SourceEnum.Agents
+    }
+    span.events = []
+    span.links = []
+    span.start_time = 0
+    span.end_time = 1
+
+    span_dict = _SpanUtils.otel_span_to_uipath_span(
+        span, serialize_attributes=False
+    ).to_dict(serialize_attributes=False)
+    assert str(span_dict["Source"]) == "Agents"
+
+    with patch("uipath.tracing._otel_exporters.httpx.Client"):
+        exporter = LlmOpsHttpExporter()
+    url = exporter._build_url([span_dict])
+    assert "&source=Agents" in url
+
+
 def test_determine_status_ok_returns_string(mock_env_vars):
     with patch("uipath.tracing._otel_exporters.httpx.Client"):
         exporter = LlmOpsHttpExporter()
diff --git a/packages/uipath/uv.lock b/packages/uipath/uv.lock
index 87ca9e781..8156765aa 100644
--- a/packages/uipath/uv.lock
+++ b/packages/uipath/uv.lock
@@ -2552,7 +2552,7 @@ wheels = [
 
 [[package]]
 name = "uipath"
-version = "2.12.4"
+version = "2.12.5"
 source = { editable = "." }
 dependencies = [
     { name = "applicationinsights" },