Metrics, Logs & Traces

Metrics (Prometheus, opencode_*)

Cumulative per-session counters exported via the otel-collector job:

Metric	Labels
opencode_session_count_total	session_id, is_subagent
opencode_cost_usage_USD_total	session_id, model, agent
opencode_token_usage_tokens_total	session_id, model, agent, type (input/output/cache_read/cache_creation/reasoning)
opencode_model_usage_total	session_id, model, agent, provider
opencode_message_count_total	session_id, model, agent
opencode_tool_duration_milliseconds_{count,sum,bucket}	session_id, tool_name, success
opencode_lines_of_code_total	session_id, type (added/removed)
opencode_cache_count_total	session_id, model, type

Logs (Loki, {service_name="opencode"})

Key event_name values:

Event	Key attributes
api_request	model, duration_ms, token counts, cost_usd, provider, session_id
tool_result	tool_name, success, duration_ms, tool_result_size_bytes, session_id
session.idle / session.created / session.error	total_tokens, total_cost_usd, total_messages, session_id
user_prompt	prompt_length, model, session_id

Traces (Tempo, {resource.service.name="opencode"})

• opencode.llm — one per LLM call; attributes: llm.model_name, llm.token_count.*, cost_usd, llm.finish_reason, input.value, output.value
• opencode.tool.<name> — one per tool call; attributes: tool.name, tool.parameters, tool.success, output.value
• session.id is a span attribute (not resource), so TraceQL filters use .session.id

Note

Traces are retained for 24 hours by default (see tempo.yaml).