List fields — GET /v1/o11y/logs/fields

Returns the log field catalog: the fields already selected as indexed columns, and the interesting ones seen in the data that could be.

GET /v1/o11y/logs/fields

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Address	`https://api.hanzo.ai/v1/o11y/logs/fields`
Method	`GET`
Operation	`get_o11y_logs_fields`
Auth	`Authorization: Bearer $HANZO_API_KEY`

Returns the log field catalog: the fields already selected as indexed columns, and the interesting ones seen in the data that could be.

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

Request

GET /v1/o11y/logs/fields takes no parameters and no body — the credential is the whole request.

Response

Status	Body	Meaning
`200`	o11y.O11yFieldCatalogOut	ok
`202`	Approval	held for approval
`default`	problem-details	refused

200 body — 8 fields.

Field	In	Type	Always	Description
`interesting`	body	o11y.O11yTelemetryField[]	—	Interesting are fields seen in the data that could be selected.
`interesting[].dataType`	body	string	—	DataType is the field's data type, e.g. string, int64, float64, bool.
`interesting[].name`	body	string	—	Name is the field's name.
`interesting[].type`	body	string	—	Type is where the field lives: attributes or resources.
`selected`	body	o11y.O11yTelemetryField[]	—	Selected are the fields materialized as their own columns.
`selected[].dataType`	body	string	—	DataType is the field's data type, e.g. string, int64, float64, bool.
`selected[].name`	body	string	—	Name is the field's name.
`selected[].type`	body	string	—	Type is where the field lives: attributes or resources.

Failure carries the platform error shape — see Errors.

Examples

CLI

SDK

HTTP

MCP

hanzo o11y logs fields get

.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.getO11yLogsFields();

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_logs_fields()

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

resp, _, err := client.O11yAPI.GetO11yLogsFields(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_logs_fields(&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).getO11yLogsFields();

curl https://api.hanzo.ai/v1/o11y/logs/fields \
  -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"
         }
       }
     }'

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