Get Trace or Span Detail

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

const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

fetch('https://api.example.com/traces/{trace_id}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.example.com/traces/{trace_id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.example.com/traces/{trace_id}"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("Authorization", "Bearer <token>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

require 'uri'
require 'net/http'

url = URI("https://api.example.com/traces/{trace_id}")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'

response = http.request(request)
puts response.read_body

{
  "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": []
    }
  ]
}

Traces

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

const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

fetch('https://api.example.com/traces/{trace_id}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.example.com/traces/{trace_id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.example.com/traces/{trace_id}"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("Authorization", "Bearer <token>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

require 'uri'
require 'net/http'

url = URI("https://api.example.com/traces/{trace_id}")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'

response = http.request(request)
puts response.read_body

{
  "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

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

Agno SDK Reference

AgentOS API Reference

Agno Infra Reference

Get Trace or Span Detail

Authorizations

Path Parameters

Query Parameters

Response