Create listErrors

Lists the grouped exceptions in the query window — each an exception type with its message, count, service and first/last-seen — for the caller's org.

POST /v1/o11y/listErrors

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Address	`https://api.hanzo.ai/v1/o11y/listErrors`
Method	`POST`
Operation	`post_o11y_listerrors`
Auth	`Authorization: Bearer $HANZO_API_KEY`

Lists the grouped exceptions in the query window — each an exception type with its message, count, service and first/last-seen — for the caller's org.

Callers need the viewer role; the runtime's own gate enforces it.

Request

15 fields, body application/json (required).

Field	In	Type	Required	Description
`end`	body	string	—	End is the window end, as a nanosecond epoch spelled as a string.
`exceptionType`	body	string	—	ExceptionType narrows to one exception type.
`limit`	body	integer (int64)	—	Limit caps how many exception groups come back.
`offset`	body	integer (int64)	—	Offset is how many groups to skip.
`order`	body	string	—	Order is the direction: ascending or descending.
`orderParam`	body	string	—	OrderParam is the column to order by, e.g. exceptionCount, lastSeen.
`serviceName`	body	string	—	ServiceName narrows to one reporting service.
`start`	body	string	—	Start is the window start, as a nanosecond epoch spelled as a string.
`tags`	body	o11y.O11yTagQuery[]	—	Tags narrow the scan to spans carrying the given tag values.
`tags[].boolValues`	body	boolean[]	—	BoolValues are the boolean values to test against.
`tags[].key`	body	string	—	Key is the tag to test.
`tags[].numberValues`	body	number (double)[]	—	NumberValues are the numeric values to test against.
`tags[].operator`	body	string	—	Operator is the comparison, e.g. in, nin, contains, exists.
`tags[].stringValues`	body	string[]	—	StringValues are the string values to test against.
`tags[].tagType`	body	string	—	TagType is where the tag lives, e.g. ResourceAttribute, SpanAttribute.

Response

Status	Body	Meaning
`200`	o11y.O11yListError[]	ok
`202`	Approval	held for approval
`default`	problem-details	refused

200 body — 7 fields.

Field	In	Type	Always	Description
`[].exceptionCount`	body	integer (uint64)	—	ExceptionCount is how many instances the group holds in the window.
`[].exceptionMessage`	body	string	—	ExceptionMsg is its message.
`[].exceptionType`	body	string	—	ExceptionType is the exception's type.
`[].firstSeen`	body	string (date-time)	—	FirstSeen is when the earliest was.
`[].groupID`	body	string	—	GroupID is the group's id.
`[].lastSeen`	body	string (date-time)	—	LastSeen is when the latest instance was recorded.
`[].serviceName`	body	string	—	ServiceName is the service that reported them.

Failure carries the platform error shape — see Errors.

Examples

CLI

SDK

HTTP

MCP

hanzo o11y listErrors

.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.postO11yListerrors({ end: "<end>", exceptionType: "<exceptionType>" });

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).post_o11y_listerrors(end="<end>", exception_type="<exceptionType>")

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

resp, _, err := client.O11yAPI.PostO11yListerrors(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::post_o11y_listerrors(&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).postO11yListerrors();

curl -X POST https://api.hanzo.ai/v1/o11y/listErrors \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "end": "<end>",
       "exceptionType": "<exceptionType>"
     }'

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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