Hello Team, I am new to Arize AI and exploring Phoenix for tracing our LLM application. We have added traces in the code and deployed on AWS ECS. I am able to startup logs as below. However, not able to see the traces on https://app.phoenix.arize.com/ 12 June 2025 at 11:02 (UTC+5:30)| Phoenix Project: saphire-evalbluekaktus-ai-chats 12 June 2025 at 11:02 (UTC+5:30)| Span Processor: SimpleSpanProcessorbluekaktus-ai-chats 12 June 2025 at 11:02 (UTC+5:30)| Collector Endpoint: https://app.phoenix.arize.com bluekaktus-ai-chats 12 June 2025 at 11:02 (UTC+5:30)| Transport: HTTP + protobuf
If your logs show the Phoenix collector endpoint as https://app.phoenix.arize.com but traces are not visible in the UI, first ensure you are sending traces to the correct endpoint: it must be https://app.phoenix.arize.com/v1/traces for OTLP HTTP ingestion. Also, make sure your API key is set in the PHOENIX_CLIENT_HEADERS environment variable as api_key=<YOUR_API_KEY> and that PHOENIX_COLLECTOR_ENDPOINT is set to https://app.phoenix.arize.com (docs, hosted tutorial).If you are still not seeing traces, double-check that your exporter is configured to use the /v1/traces path, and that your API key is valid and has project access. Example setup: LBKSimport os os.environ["PHOENIX_CLIENT_HEADERS"] = "api_key=<YOUR_API_KEY> " os.environ["PHOENIX_COLLECTOR_ENDPOINT"] = "https://app.phoenix.arize.com"LBKSIf using OpenTelemetry directly, set the OTLP endpoint to https://app.phoenix.arize.com/v1/traces. Would you like more troubleshooting steps?Sources:
- Phoenix Tracing Quickstart
- Hosted Phoenix LlamaIndex Tutorial
馃挕聽Hint: Mention RunLLM in the thread for followups.
Hi 馃敀[private user], I tried both ways. Still not able to see the traces on the application. I am adding the code snippet for your reference. Kindly assist.
hi Gurdeep S. can you try:
tracer_provider = register(
project_name="saphire-eval",
endpoint="https://app.phoenix.arize.com/v1/traces",
auto_instrument=False,
set_global_tracer_provider=True,
batch=True,
)
hi Dustin N. i have tried your suggested code but still not able to see the traces. Attaching the code and logs
you can set the auth directly in the register method, I'm curious to see if it works without overriding the span processor
hi Dustin N., I am still facing the issue.
you're still overriding the batch span processor there
hi Dustin N., I tried everything. But not able to see the traces. Attaching the screenshot for your reference -
hi Gurdeep S. I don't work on cloud specifically, but PHOENIX_COLLECTOR_ENDPOINT is more generic than the more specific endpoint argument that you pass to register. If passing a URL specifically to register, you'll need to pass in the fully qualified OLTP endpoint you plan on using, which ends in v1/traces for Phoenix cloud. I know that you might need a "space" suffix and ID as well, though I'm not sure if you currently have one. Kiko C. or Anthony P. should be able to tell you As far as I understand your endpoint should end up looking like: endpoint="https://app.phoenix.arize.com/v1/traces" OR endpoint="https://app.phoenix.arize.com/s/{SPACE_ID}/v1/traces"
What LLM library are you attempting to instrument?
I am able to send traces to phoenix cloud using the above setup
Hey Gurdeep S., I have a proposition, we're improving Phoenix Cloud and we are currently under a beta program. I can get you in it, and huddle with you to get your traces in. How does that sound?