Create rollback

Puts the version installed before the installed one back in the org's published set: exactly that version's artifact, nothing retrained.

POST /v1/capabilities/{name}/rollback

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Address	`https://api.hanzo.ai/v1/capabilities/{name}/rollback`
Method	`POST`
Operation	`capabilitiesRollback`
Auth	`Authorization: Bearer $HANZO_API_KEY`

Puts the version installed before the installed one back in the org's published set: exactly that version's artifact, nothing retrained. Refused 409 no_previous when none was installed before it, and needs_validation when that one was taught over another base than Kai serves.

Request

1 field.

Field	In	Type	Required	Description
`name`	path	string	yes

Response

Status	Body	Meaning
`200`	train.Capability	ok
`default`	problem-details	refused

200 body — 35 fields.

Field	In	Type	Always	Description
`by`	body	string	—
`corrections`	body	string[]	—	Corrections are the corrections it is taught from.
`created`	body	integer (int64)	—
`installed`	body	integer (int64)	—	Installed is the version in the org's published set, 0 when none.
`live`	body	train.Live	—
`live.damage`	body	integer (int64)	—
`live.damage_rate`	body	number (double)	—
`live.fires`	body	integer (int64)	—	Fires counts decisions it answered otherwise than the base would have.
`live.last_fired`	body	integer (int64)	—	LastFired is when it last fired, unix seconds; 0 never.
`live.neutral`	body	integer (int64)	—
`live.repair_rate`	body	number (double)	—
`live.repairs`	body	integer (int64)	—	Repairs are fires that changed the label and no correction contradicts; Damage, fires whose label a correction put back to the base's; Neutral, fires that kept the base's label.
`live.version`	body	integer (int64)	—
`name`	body	string	—	Name is its name, one per org; it is the name its versions install under.
`question`	body	train.Question	—
`question.key`	body	string	—
`question.labels`	body	string[]	—
`question.type`	body	string	—
`state`	body	string	—	State is where it is in its life: draft, trained, evaluated, publishable, installed, active, disabled or needs_validation.
`updated`	body	integer (int64)	—
`version`	body	integer (int64)	—	Version is its latest version, 0 in draft.
`versions`	body	train.Version[]	—	Versions are its versions, newest first (one capability read).
`versions[].at`	body	integer (int64)	—
`versions[].base_sha256`	body	string	—	BaseSHA256 is Kai's weights it was taught over.
`versions[].by`	body	string	—
`versions[].bytes`	body	integer (int64)	—	Bytes is its artifact's size.
`versions[].corrections`	body	string[]	—	Corrections are the corrections it was taught from.
`versions[].evaluation`	body	any	—	Evaluation is its evaluation record, in the shared /evals words.
`versions[].form`	body	string	—	Form is calibration, head or pair; Rank its place, 1 the smallest.
`versions[].passed`	body	boolean	—	Passed says its evaluation passed the gate: it is publishable.
`versions[].questions`	body	string[]	—	Questions are the question keys it answers.
`versions[].rank`	body	integer (int64)	—
`versions[].representation`	body	string	—	Representation is what it reads of Kai (the weights, tokenizer, layout and pooling, hashed): the only Kai it serves on, whatever the release.
`versions[].sha256`	body	string	—	SHA256 is its artifact's: the tar the decision service installs.
`versions[].version`	body	integer (int64)	—

Failure carries the platform error shape — see Errors.

Examples

CLI

SDK

HTTP

MCP

hanzo capabilities rollback <name>

.ts

.py

.go

.rs

.java

import { Configuration, TrainApi } from 'hanzoai';

const api = new TrainApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.capabilitiesRollback({ name: 'name' });

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

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = TrainApi(client).capabilities_rollback(name='name')

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

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

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

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

let result = train_api::capabilities_rollback(&cfg, Default::default()).await?;

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

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

var result = new TrainApi(client).capabilitiesRollback();

curl -X POST https://api.hanzo.ai/v1/capabilities/<name>/rollback \
  -H "Authorization: Bearer $HANZO_API_KEY"

Tool train, op capabilitiesRollback — 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": "train",
         "arguments": {
           "op": "capabilitiesRollback",
           "input": {
             "name": "<name>"
           }
         }
       }
     }'

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