Token and Cost Metrics not getting displayed in Dashboard

[KalidasKalimuthu]

Hi,
I created a simple customer-service-agent (https://github.com/cuppibla/adk_eval_starter/blob/main/customer_service_agent/agent.py) using google adk and gemini-2.5-flash-lite as LLM and python 3.13 .

I am able to successfully integrate the agent with agentops and able to view the Session, LLM Calls, Tool Calls in the dashboard ,however tokens and costs are not getting displayed. Could you pls help to address the issue?

Trace Output:

🖇 AgentOps: Validating spans for trace ID: d381e4650f9748c6fd34d213c2e38767
🖇 AgentOps: Found 12 span(s) in trace
🖇 AgentOps: Trace metrics - Total tokens: 0, Cost: $0.0000000
🖇 AgentOps: No LLM spans found via attribute inspection

❌ Error validating spans: No LLM activity detected in trace d381e4650f9748c6fd34d213c2e38767. Found spans: ['adk.agent.customer_service_agent', 'adk.llm.gemini-2.5-flash-lite', 'adk.agent.customer_service_agent', 'adk.llm.gemini-2.5-flash-lite', 'adk.agent.customer_service_agent', 'adk.llm.gemini-2.5-flash-lite', 'adk.tool.get_purchase_history', 'adk.llm.gemini-2.5-flash-lite', 'adk.agent.customer_service_agent', 'adk.llm.gemini-2.5-flash-lite', 'adk.tool.issue_refund', 'adk.llm.gemini-2.5-flash-lite'], Token usage: 0