Get Trace or Span Detail

Retrieve detailed trace information with hierarchical span tree, or a specific span within the trace.

Without span_id parameter: Returns the full trace with hierarchical span tree:

• Trace metadata (ID, status, duration, context)
• Hierarchical tree of all spans
• Each span includes timing, status, and type-specific metadata

With span_id parameter: Returns details for a specific span within the trace:

• Span metadata (ID, name, type, timing)
• Status and error information
• Type-specific attributes (model, tokens, tool params, etc.)

Span Hierarchy (full trace): The tree field contains root spans, each with potential children. This recursive structure represents the execution flow:

Agent.run (root)
  ├─ LLM.invoke
  ├─ Tool.execute
  │   └─ LLM.invoke (nested)
  └─ LLM.invoke

Span Types:

• AGENT: Agent execution with input/output
• LLM: Model invocations with tokens and prompts
• TOOL: Tool calls with parameters and results

GET /traces/{trace_id}

Get Trace or Span Detail

cURL

curl --request GET \
  --url https://api.example.com/traces/{trace_id} \
  --header 'Authorization: Bearer <token>'

200

full_trace

{
  "trace_id": "a1b2c3d4",
  "name": "Stock_Price_Agent.run",
  "status": "OK",
  "duration": "1.2s",
  "start_time": "2025-11-19T10:30:00.000000+00:00",
  "end_time": "2025-11-19T10:30:01.200000+00:00",
  "total_spans": 4,
  "error_count": 0,
  "input": "What is Tesla stock price?",
  "output": "The current price of Tesla (TSLA) is $245.67.",
  "run_id": "run123",
  "session_id": "session456",
  "user_id": "user789",
  "agent_id": "stock_agent",
  "created_at": "2025-11-19T10:30:00+00:00",
  "tree": [
    {
      "id": "span1",
      "name": "Stock_Price_Agent.run",
      "type": "AGENT",
      "duration": "1.2s",
      "status": "OK",
      "spans": []
    }
  ]
}

Authorizations

Authorization · string · header · required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Path Parameters

trace_id · string · required

Query Parameters

span_id · string | null

Optional: Span ID to retrieve specific span

run_id · string | null

Optional: Run ID to retrieve trace for

db_id · string | null

Database ID to query trace from

Response

200

application/json

Trace or span detail retrieved successfully

TraceDetail

TraceNode

Detailed trace information with hierarchical span tree

trace_id · string · required

Unique trace identifier

name · string · required

Trace name (usually root span name)

status · string · required

Overall status (OK, ERROR)

duration · string · required

Human-readable total duration

start_time · string<date-time> · required

Trace start time (Pydantic auto-serializes to ISO 8601)

end_time · string<date-time> · required

Trace end time (Pydantic auto-serializes to ISO 8601)

total_spans · integer · required

Total number of spans in this trace

error_count · integer · required

Number of spans with errors

created_at · string<date-time> · required

Time when trace was created (Pydantic auto-serializes to ISO 8601)

tree · TraceNode · object[] · required

Hierarchical tree of spans (root nodes)

Show child attributes

input · string | null

Input to the agent/workflow

output · string | null

Output from the agent/workflow

error · string | null

Error message if status is ERROR

run_id · string | null

Associated run ID

session_id · string | null

Associated session ID

user_id · string | null

Associated user ID

agent_id · string | null

Associated agent ID

team_id · string | null

Associated team ID

workflow_id · string | null

Associated workflow ID