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Create fields — POST /v1/o11y/logs/fields

Changes how one log field is stored — selects or deselects it as a materialized column and tunes its index — and echoes the setting back.

POST /v1/o11y/logs/fields

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Addresshttps://api.hanzo.ai/v1/o11y/logs/fields
MethodPOST
Operationpost_o11y_logs_fields
AuthAuthorization: Bearer $HANZO_API_KEY

Changes how one log field is stored — selects or deselects it as a materialized column and tunes its index — and echoes the setting back.

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

Request

6 fields, body application/json (required).

FieldInTypeRequiredDescription
dataTypebodystringyesDataType is the field's data type, e.g. string, int64, float64, bool.
indexbodystring—Index is the index expression to put on the column, e.g. minmax, set(N), bloom_filter(P), tokenbf_v1(S,H,SEED).
indexGranularitybodyinteger (int64)—IndexGranularity is the index granularity in rows.
namebodystringyesName is the field to tune.
selectedbodyboolean—Selected materializes the field as its own column when true.
typebodystringyesType is where the field lives: attributes or resources.

Response

StatusBodyMeaning
200o11y.O11yFieldSettingok
202Approvalheld for approval
defaultproblem-detailsrefused

200 body — 6 fields.

FieldInTypeAlwaysDescription
dataTypebodystringyesDataType is the field's data type, e.g. string, int64, float64, bool.
indexbodystring—Index is the index expression to put on the column, e.g. minmax, set(N), bloom_filter(P), tokenbf_v1(S,H,SEED).
indexGranularitybodyinteger (int64)—IndexGranularity is the index granularity in rows.
namebodystringyesName is the field to tune.
selectedbodyboolean—Selected materializes the field as its own column when true.
typebodystringyesType is where the field lives: attributes or resources.

Failure carries the platform error shape — see Errors.

Examples

hanzo o11y logs fields create \
  --data-type <dataType> \
  --name <name> \
  --type <type>
import { Configuration, O11yApi } from 'hanzoai';

const api = new O11yApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.postO11yLogsFields({ name: "<name>", dataType: "<dataType>", type: "<type>" });
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_logs_fields(name="<name>", data_type="<dataType>", type="<type>")
cfg := hanzoai.NewConfiguration()
cfg.AddDefaultHeader("Authorization", "Bearer "+os.Getenv("HANZO_API_KEY"))
client := hanzoai.NewAPIClient(cfg)

resp, _, err := client.O11yAPI.PostO11yLogsFields(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_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).postO11yLogsFields();
curl -X POST https://api.hanzo.ai/v1/o11y/logs/fields \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "name": "<name>",
       "dataType": "<dataType>",
       "type": "<type>"
     }'

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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