List traces — GET /v1/o11y/sentinel/traces

Lists the traces a project's captured errors reference, each with how many errors landed on it, when they started and stopped, and the latest message seen — the entry point for "which requests are failing".

GET /v1/o11y/sentinel/traces

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Address	`https://api.hanzo.ai/v1/o11y/sentinel/traces`
Method	`GET`
Operation	`get_o11y_sentinel_traces`
Auth	`Authorization: Bearer $HANZO_API_KEY`

Request

3 fields.

Field	In	Type	Required	Description
`project`	query	string	yes	Project is the project to read, as its id.
`period`	query	string	—	Period is the window to read, relative to now — 1h, 24h, 7d, 14d, 30d.
`limit`	query	integer	—	Limit caps how many traces come back.

Response

Status	Body	Meaning
`200`	o11y.O11yTracesOut	ok
`202`	Approval	held for approval
`default`	problem-details	refused

200 body — 8 fields.

Field	In	Type	Always	Description
`data`	body	o11y.O11yTraces	—
`data.items`	body	o11y.O11yTrace[]	—	Items are the traces, most recent first.
`data.items[].count`	body	integer (uint64)	—	Count is how many captured errors carried it.
`data.items[].firstSeen`	body	string (date-time)	—	FirstSeen is when the earliest of them was recorded.
`data.items[].lastSeen`	body	string (date-time)	—	LastSeen is when the latest was.
`data.items[].message`	body	string	—	Message is the latest error message seen on the trace.
`data.items[].traceId`	body	string	—	TraceID is the trace id.
`status`	body	string	—	Status is "success".

Failure carries the platform error shape — see Errors.

Examples

CLI

SDK

HTTP

MCP

hanzo o11y sentinel traces list --project <project>

.ts

.py

.go

.rs

.java

import { Configuration, O11yApi } from 'hanzoai';

const api = new O11yApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.getO11ySentinelTraces({ project: 'project' });

from hanzoai.cloud import ApiClient, Configuration
from hanzoai.cloud.api import O11yApi

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = O11yApi(client).get_o11y_sentinel_traces(project='project')

cfg := hanzoai.NewConfiguration()
cfg.AddDefaultHeader("Authorization", "Bearer "+os.Getenv("HANZO_API_KEY"))
client := hanzoai.NewAPIClient(cfg)

resp, _, err := client.O11yAPI.GetO11ySentinelTraces(context.Background()).Execute()
if err != nil {
	return err
}

use hanzo_client::apis::{configuration::Configuration, o11y_api};

let mut cfg = Configuration::new();
cfg.bearer_access_token = std::env::var("HANZO_API_KEY").ok();

let result = o11y_api::get_o11y_sentinel_traces(&cfg, Default::default()).await?;

import ai.hanzo.cloud.ApiClient;
import ai.hanzo.cloud.api.O11yApi;

ApiClient client = new ApiClient();
client.setBearerToken(System.getenv("HANZO_API_KEY"));

var result = new O11yApi(client).getO11ySentinelTraces();

curl https://api.hanzo.ai/v1/o11y/sentinel/traces?project=%3Cproject%3E \
  -H "Authorization: Bearer $HANZO_API_KEY"

MCP reaches o11y through the o11y tool, which names its 307 operations with its own verbs — this one among them, under a name only MCP declares. describe explains any of them:

curl -X POST https://api.hanzo.ai/v1/mcp \
  -H "Content-Type: application/json" \
  -d '{
       "jsonrpc": "2.0",
       "id": 1,
       "method": "tools/call",
       "params": {
         "name": "describe",
         "arguments": {
           "op": "list_o11y_autocomplete_aggregate_attributes"
         }
       }
     }'

O11y API · All Hanzo APIs · Interactive reference

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