Create fields — POST /v1/o11y/traces/fields

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

POST /v1/o11y/traces/fields

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Address	`https://api.hanzo.ai/v1/o11y/traces/fields`
Method	`POST`
Operation	`UpdateTraceField`
Auth	`Authorization: Bearer $HANZO_API_KEY`

Changes how one span 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).

Field	In	Type	Required	Description
`dataType`	body	string	yes	DataType is the field's data type, e.g. string, int64, float64, bool.
`index`	body	string	—	Index is the index expression to put on the column, e.g. minmax, set(N), bloom_filter(P), tokenbf_v1(S,H,SEED).
`indexGranularity`	body	integer (int64)	—	IndexGranularity is the index granularity in rows.
`name`	body	string	yes	Name is the field to tune.
`selected`	body	boolean	—	Selected materializes the field as its own column when true.
`type`	body	string	yes	Type is where the field lives: attributes or resources.

Response

Status	Body	Meaning
`200`	o11y.O11yFieldSetting	ok
`202`	Approval	held for approval
`default`	problem-details	refused

200 body — 6 fields.

Field	In	Type	Always	Description
`dataType`	body	string	yes	DataType is the field's data type, e.g. string, int64, float64, bool.
`index`	body	string	—	Index is the index expression to put on the column, e.g. minmax, set(N), bloom_filter(P), tokenbf_v1(S,H,SEED).
`indexGranularity`	body	integer (int64)	—	IndexGranularity is the index granularity in rows.
`name`	body	string	yes	Name is the field to tune.
`selected`	body	boolean	—	Selected materializes the field as its own column when true.
`type`	body	string	yes	Type is where the field lives: attributes or resources.

Failure carries the platform error shape — see Errors.

Examples

CLI

SDK

HTTP

MCP

hanzo o11y traces fields create \
  --data-type <dataType> \
  --name <name> \
  --type <type>

.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.updateTraceField({ 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).update_trace_field(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.UpdateTraceField(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::update_trace_field(&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).updateTraceField();

curl -X POST https://api.hanzo.ai/v1/o11y/traces/fields \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "name": "<name>",
       "dataType": "<dataType>",
       "type": "<type>"
     }'

Tool o11y, op UpdateTraceField — POST the JSON-RPC envelope to https://api.hanzo.ai/v1/mcp.

curl -X POST https://api.hanzo.ai/v1/mcp \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "jsonrpc": "2.0",
       "id": 1,
       "method": "tools/call",
       "params": {
         "name": "o11y",
         "arguments": {
           "op": "UpdateTraceField",
           "input": {
             "name": "<name>",
             "dataType": "<dataType>",
             "type": "<type>"
           }
         }
       }
     }'

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